SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

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FORM 10-Q

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(MARK ONE)

[X]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
             SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2002 or
 [  ]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM ___________ TO  _____________
Commission file number 0-12254



SCIENTIFIC TECHNOLOGIES INCORPORATED



|Oregon                                                         | 77-0170363                             
|-------------------------------------------------------------- | ---------------------------------------
|(State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification Number)

6550 Dumbarton CircleFremont, CA     94555

(510) 608-3400







Check whether the issuer (1) has filed all reports required
to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934
during the preceding 12 months (or for such shorter period that the registrant
was required to file reports), and (2) has been subject to such filing
requirements for the past 90 days.    YES [X] NO [   ],

Common stock outstanding as of October 31, 2002 was 9,681,600 shares.









SCIENTIFIC TECHNOLOGIES INCORPORATED

                           Quarter Ended September 30, 2002
                                     INDEX



|PART I.   Financial Information                                                                                       | Page No.
|--------------------------------------------------------------------------------------------------------------------- | --------
|                                                                                                                      |         
|Item 1.   Financial Statements
                  (unaudited):                                                         |         
|                                                                                                                      |         
|Consolidated Balance Sheets as of
          
     September 30, 2002 and December 31, 2001                            | **      
|                                                                                                                      |         
|Consolidated Statements of Operations for the
          
    Three and Nine Months ended September 30, 2002 and 2001  | **      
|                                                                                                                      |         
|Consolidated Statements of Cash Flows for the
          
    Nine Months ended September 30, 2002 and 2001            | **      
|                                                                                                                      |         
|Notes to Consolidated Financial Statements                                                                            | **      
|                                                                                                                      |         
|Item 2.   Management's Discussion and Analysis of Financial
                      Condition and Results of Operations | **      
|                                                                                                                      |         
|Item 3.   Quantitative and Qualitative Disclosures About Market Risk                                                  | **      
|                                                                                                                      |         
|Item 4.   Controls and Procedures                                                                                     | **      
|                                                                                                                      |         
|PART II.  Other Information                                                                                           |         
|                                                                                                                      |         
|Item 6.   Exhibits and Reports on Form 8-K                                                                            | **      
|                                                                                                                      |         
|Signatures                                                                                                            | **      

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PART I -- FINANCIAL INFORMATION

Item 1. Financial Statements

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SCIENTIFIC TECHNOLOGIES INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEET(Unaudited, in thousands excepet for share data)

|Assets                                   | Sep. 30, 2002 | Dec. 31, 2001
|---------------------------------------- | ------------- | -------------
|Current assets:                          |               |              
|Cash and cash equivalents                | $ 1,794       | $ 1,033      
|Accounts and notes receivable, net       | 7,307         | 6,454        
|Inventories                              | 8,342         | 9,125        
|Deferred income taxes                    | 2,081         | 2,081        
|Other current assets                     | 772           | 531          
|Total current assets                     | 20,296        | 19,224       
|                                         |               |              
|Intangible assets                        | 10,413        | 11,389       
|Property and equipment, net
Other assets | 3,710
303     | 3,537
50     
|Total assets                             | $34,722       | $34,200      

Liabilities and Shareholders' Equity

|Current liabilities:      |        
|------------------------- | -------
|Accounts payable          | $ 1,793
|Accrued expenses          | 2,984  
|Total current liabilities | 4,777  
|Long-term liability       | 432    
|Total liabilities         | 5,209  

Shareholders' equity:

|Common stock; $.001 par value; 100,000 shares authorized; 9,681 and 9,676 shares issued
and outstanding | 10      | 10     
|------------------------------------------------------------------------------------------------------- | ------- | -------
|Capital in excess of par value                                                                          | 5,631   | 5,637  
|Retained earnings                                                                                       | 23,872  | 23,587 
|Total shareholders' equity                                                                              | 29,513  | 29,234 
|Total liabilities and shareholders' equity                                                              | $34,722 | $34,200

The accompanying notes are an integral part of these
financial statements.

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SCIENTIFIC TECHNOLOGIES INCORPORATED

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS(Unaudited, in thousands, except per share data)



|                                                                      | For the three months ended
|--------------------------------------------------------------------- | --------------------------
|                                                                      | Sep. 30, 2002             
|                                                                      |                           
|Sales                                                                 | $12,836                   
|                                                                      |                           
|Cost of goods sold                                                    | 7,053                     
|                                                                      |                           
|Gross profit                                                          | 5,783                     
|                                                                      |                           
|Operating expenses:                                                   |                           
|Selling, general and administrative                                   | 3,986                     
|Research and development                                              | 1,058                     
|Amortization of intangible assets                                     | 177                       
|Total operating expenses                                              | 5,221                     
|                                                                      |                           
|Income from operations                                                | 562                       
|                                                                      |                           
|Interest and other income, net                                        | (1)                       
|                                                                      |                           
|Income before income taxes                                            | 561                       
|                                                                      |                           
|Provision for income taxes                                            | 213                       
|                                                                      |                           
|Net income                                                            | $348                      
|                                                                      |                           
|Net income per common share:                                          |                           
|Basic and diluted                                                     | $ 0.04                    
|                                                                      |                           
|Shares used to compute net income per common
share:
Basic and diluted | 9,672                     

The accompanying notes are an integral part of these financial
statements.

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SCIENTIFIC TECHNOLOGIES INCORPORATED

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS(Unaudited, in thousands, except per share data)



|                                                                             | For the nine months ended
|---------------------------------------------------------------------------- | -------------------------
|                                                                             | Sep. 30, 2002            
|                                                                             |                          
|Sales                                                                        | $36,538                  
|                                                                             |                          
|Cost of goods sold                                                           | 20,294                   
|                                                                             |                          
|Gross profit                                                                 | 16,244                   
|                                                                             |                          
|Operating expenses:                                                          |                          
|Selling, general and administrative                                          | 11,716                   
|Research and development                                                     | 3,548                    
|Amortization of intangible assets                                            | 530                      
|Total operating expenses                                                     | 15,794                   
|                                                                             |                          
|Income (loss) from operations                                                | 450                      
|                                                                             |                          
|Interest and other income, net                                               | 8                        
|                                                                             |                          
|Income (loss) before income taxes                                            | 458                      
|                                                                             |                          
|Provision for (benefit from) income taxes                                    | 174                      
|                                                                             |                          
|Net income (loss)                                                            | $284                     
|                                                                             |                          
|Net income (loss) per common share:                                          |                          
|Basic and diluted                                                            | $0.03                    
|                                                                             |                          
|Shares used to compute net income (loss) per common
share:
Basic and diluted | 9,675                    

The accompanying notes are an integral part of these financial
statements.

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SCIENTIFIC TECHNOLOGIES INCORPORATED

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS(Unaudited, in thousands)



|                                                                                      | For the nine months ended
|------------------------------------------------------------------------------------- | -------------------------
|                                                                                      | Sep. 30, 2002            
|Cash flows from operating activities                                                  |                          
|Net income (loss)                                                                     | $ 284                    
|Adjustments to reconcile net income (loss) to 
cash provided by operating activities: |                          
|Depreciation and amortization                                                         | 1,977                    
|Changes in assets and liabilities                                                     |                          
|Decrease (increase) in accounts receivable                                            | (853)                    
|Decrease in inventories                                                               | 783                      
|Increase in other assets                                                              | (494)                    
|Decrease in accounts payable                                                          | (93)                     
|Increase in payable to Parent                                                         | --                       
|Increase (decrease) in accrued liabilities                                            | 336                      
|Cash flows provided by operating activities                                           | 1,940                    
|                                                                                      |                          
|Cash flows from investing activities                                                  |                          
|Purchase of property, plant and equipment                                             | (1,173)                  
|Net cash used in connection with the acquisition of
   Dunn Sales, Inc.               | --                       
|Purchase of short-term investments                                                    | --                       
|Cash flows used in investing activities                                               | (1,173)                  
|                                                                                      |                          
|Cash flows from financing activities                                                  |                          
|Dividends                                                                             | --                       
|Repurchase of common stock                                                            | (6)                      
|Cash flows used in financing activities                                               | (6)                      
|                                                                                      |                          
|Change in cash and cash equivalents                                                   | 761                      
|                                                                                      |                          
|Cash and cash equivalents at beginning of period                                      | 1,033                    
|Cash and cash equivalents at end of period                                            | $1,794                   



The accompanying notes are an integral part of these financial
statements.

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SCIENTIFIC TECHNOLOGIES INCORPORATED

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The accompanying condensed consolidated financial
statements for the three and nine months ended September 30, 2002 and 2001 are
unaudited. The accompanying unaudited condensed consolidated financial
statements have been prepared in accordance with generally accepted accounting
principles in the United States of America and in accordance with the
instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do
not include all of the information and footnotes required by generally accepted
accounting principles in the United States of America for complete financial
statements.  In the opinion of management, the unaudited condensed consolidated
financial statements reflect all adjustments, consisting only of normal
recurring adjustments, considered necessary to present fairly the financial
position, results of operations and cash flows of Scientific Technologies, Inc.
(the "Company") and its subsidiaries for all periods presented.

To prepare these condensed consolidated financial
statements in conformity with generally accepted accounting principles,
management of the Company has made a number of estimates and assumptions
relating to the reporting of assets and liabilities and the disclosure of
contingent assets and liabilities. Actual results could differ from those
estimates.

The results of operations are not necessarily
indicative of the results to be expected in the future or for the full fiscal
year.  It is recommended that these condensed consolidated financial statements
be read in conjunction with the Company's consolidated financial statements and
the notes thereto included in its 2001 Annual Report on Form 10-K.

1. INVENTORIES

Inventories consist of the following:	       	      (In
thousands)

|                | Sep. 30, 2002 | Dec. 31, 2001
|--------------- | ------------- | -------------
|Raw materials   | $4,703        | $5,665       
|Subassemblies   | 1,123         | 1,042        
|Work in process | 733           | 475          
|Finished goods  | 1,783         | 1,943        
|                | $8,342        | $9,125       

2. NET INCOME (LOSS) PER SHARE

A reconciliation of the numerators and denominators used to
compute basic and diluted income (loss) per common share is provided below.



|                                                  | (In thousands) |       
|------------------------------------------------- | -------------- | ------
|                                                  | Income         | Shares
|Three months ended September 30, 2002             |                |       
|Basic earnings per share calculation              | $ 348          | 9,671 
|Effect of dilutive securities
      Stock options |                | 1     
|Diluted earnings per share calculation            | $ 348          | 9,672 
|Three months ended September 30, 2001             |                |       
|Basic earnings per share calculation              | $ 167          | 9,660 
|Effect of dilutive securities
      Stock options |                | 3     
|Diluted earnings per share calculation            | $ 167          | 9,663 



|                                                  | (In thousands) |       
|------------------------------------------------- | -------------- | ------
|                                                  | Income (loss)  | Shares
|Nine months ended September 30, 2002              |                |       
|Basic earnings per share calculation              | $ 284          | 9,673 
|Effect of dilutive securities
      Stock options |                | 2     
|Diluted earnings per share calculation            | $ 284          | 9,675 
|Nine months ended September 30, 2001              |                |       
|Basic and diluted loss per share calculation      | $ (211)        | 9,655 

3. COMPREHENSIVE INCOME (LOSS)

For the three and nine months ended
September 30, 2002 and 2001, there is no significant difference between net
income (loss) and comprehensive income (loss).

4.

Financial information for each
product group is as follows: (in thousands)



|                       | Three months ended
|---------------------- | ------------------
|                       | September 30,     
|Safety Products        | 2002              
|Sales                  | $10,818           
|Group operating profit | 925               
|                       |                   
|Automation Products    |                   
|Sales                  | $ 2,018           
|Group operating loss   | (363)             
|                       |                   
|                       | Nine months ended 
|                       | September 30,     
|Safety Products        | 2002              
|Sales                  | $30,715           
|Group operating profit | 1,536             
|                       |                   
|Automation Products    |                   
|Sales                  | $ 5,823           
|Group operating loss   | (1,086)           
|                       |                   
|                       | At                
|                       | Sep. 30           
|Total Assets           | 2002              
|Safety Products        | $12,711           
|Automation Products    | 22,011            
|Total                  | $34,722           

The Company operates principally in the United States.
The Company's operations in Germany are less than 10% of total operations. Sales
to foreign customers represented less than 10% of total sales in the three and
nine month periods ended September 30, 2002.



ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

This interim report on Form 10-Q contains trend
analysis and other forward-looking statements within the meaning of Section 27A
of the Securities Act of 1933 and Section 21E of the Securities Act of 1934.
Such statements include expectations, beliefs, intentions or strategies
regarding future operating results, future expenditures, future cash
requirements, future impact of relocation the relocation of the PSI-Tronix
division and future industry conditions that involve risks and uncertainties.
The Company's actual results could differ materially from those projected in
such forward-looking statements as a result of many factors, including, without
limitation, those set forth under this section, the section entitled "Business
Factors" below and elsewhere in this report on Form 10-Q.

Results of Operations                  (Amounts in thousands, except percentages)

Scientific Technologies Incorporated designs,
manufactures and distributes automation safeguarding and specialty sensor
products for the industrial control market. The Company's products include
safety light guards, profiling scanners, factory automation sensors, controls,
components, microcomputers, fiber optics, power monitoring devices, safety mats,
pressure, displacement and velocity transducers, digital pressure gauges and
comparators and other electronic equipment supplied to industrial automation,
commercial and defense customers.

Sales for the three months ended September 30,
2002 increased 9% to $12,836 from $11,821 in the comparable period in 2001. This
was primarily the result of increased unit sales by the Safety Products Group,
specifically light curtains and vehicle scanners, offsetting lower sales by the
PSI-Tronix operation of the Automation Products Group, which continues to be
negatively impacted by slow semiconductor manufacturing markets. Sales for the
nine months ended September 30, 2002 declined 3% to $36,538 from $37,725 in the
same period in 2001. This was the result of the softness of all our markets in
the first quarter of 2002 and the continuing slowness at PSI-Tronix.

Gross margin as a percentage of sales for the
three and nine months ended September 30, 2002 was 45% in both periods compared
to 45% and 42% for the comparable periods in 2001. The improved margin for the
nine months ended September 30, 2002 was generally the result of cost reductions
begun in the second quarter of 2001, an improvement in the mix of products sold
in the second quarter to products with a lower relative cost of sales, when
compared to the comparable period in 2001.

Selling, general and administrative expenses for
the three months ended September 30, 2002 increased 10% to $3,986 from $3,622,
somewhat consistent with the sales growth. Selling, general and administrative
expenses, which declined 1% to $11,716 for the first nine months of 2002
compared to $11,859 for the comparable 2001 period, was positively impacted by
the continuing cost reduction measures initiated in April 2001. These reductions
offset increased selling, general and administrative expenses associated with
the DSI operations, acquired in the second quarter of 2001. In addition, nine-
month selling, general and administrative expenses were negatively impacted in
2001 by a non-recurring adjustment to the reserve for doubtful accounts. As a
percent of sales for the three and nine month periods ended September 30, 2002,
selling, general and administrative expenses were 31% and 32% respectively
compared to 31% for the comparable 2001 periods.

Research and development expenses for the third
quarter and first nine months of 2002 were reduced 14% and 12% to $1,058 and
$3,548 from $1,235 and $4,015 in the 2001 comparable periods. This also was the
result of continuing cost reductions. As a percent of sales for the three and
nine months ended September 30, 2002, research and development expenses were 8%
and 10% compared to 10% and 11% in the same periods in 2001. We do not expect
that research and development expenses as a percent of sales will continue to
decline.

Liquidity and Capital Resources

At September 30, 2002, our working capital
increased 6% to $15,519 compared to $14,690 reported at December 31, 2001. This
was primarily due to the improved operating results for the first nine months of
2002.

Available bank credit lines were $6,100, all of
which were unused at September 30, 2002. The Company believes that cash from
operations, together with its cash resources and available bank borrowings, will
be sufficient to fund its working capital requirements for the next twelve
months.

Subsequent Event

In a continuing effort to improve the efficiency and
profitability of the Automation Products Group (APG), the Company has decided to
relocate its Tulare, California operations to the new facility in Logan, Utah
and combine the PSI-Tronix division with the Automation Sensors Division. We
anticipate that this relocation will result in improved margins for the
Automation Products Group, and will be completed in the second quarter of 2003.
In addition, we expect the move will improve the overall responsiveness of APG
to its customer base. While still in the planning stages, we anticipate that the
costs associated with this move will be principally expensed in the first six
months of 2003.

Critical Accounting Policies

A discussion of our critical accounting policies is set
forth in our 2001 Annual Report on Form 10-K, which was filed with the
Securities and Exchange Commission on April 1, 2002, as amended.  There were no
material changes in any of our critical accounting estimates or judgments during
the three and nine months ended September 30, 2002.

Business Factors

Because of the variety of factors and
uncertainties affecting our operating results, past financial performance and
historic trends may not be a reliable indicator of future performance. These
factors, as well as other factors affecting our operating performance, may
result in significant volatility in our common stock price. Among the factors
which could affect our future business, financial condition or operating results
are the following:

Our operating results may fluctuate.

We have experienced fluctuations in annual and quarterly
operating results and anticipate that these fluctuations will continue. These
fluctuations are caused by a number of factors, including the level and timing
of customer orders, fluctuations in purchases of complementary third party
products with which our products are sold, the mix of products sold and the
timing of operating expenditures. Our operating results have been, and could
continue to benegatively impacted by generally
adverse economic conditions throughout the high technology sector.  In
particular, the relocation of our PSI-Tronix subsidiary may prove to be more
costly than anticipated or may not result in the expected benefits, and its
continuing decreases in sales due to the current market conditions in the
semiconductor industry could negatively effect our operating results.

The seasonality inherent in our business could cause our operating
results to fluctuate.

The industrial manufacturing equipment industry in
which we compete has historically been subject to seasonality. This is also true
with respect to European markets in which we compete where business activity
declines due to vacations taken in the summer months. This seasonality, combined
with other factors such as the variability in our operating results described
above, renders quarter-to-quarter comparisons of our results of operations
unreliable as indicators of our overall performance.

The market for our products is highly competitive.

The market for industrial sensors is highly
competitive. Many competitors have substantially greater name recognition and
technical, marketing and financial resources than we have. Competitive pressures
could reduce market acceptance of our products and result in price reductions,
decreased revenues and increases in expenses.

Our business could suffer if we do not respond to technological
change and new product development demands of our customers.

The market for our products is characterized by changing
technology, evolving industry standards, changes in customer needs and new
product introductions. Our future success will depend on our ability to enhance
current products, develop new products and respond to emerging industry
standards, all on a timely and cost-effective basis. The introduction of new
products also requires that we manage the transition from older products in
order to minimize disruption of customer orders, avoid excessive levels of older
product inventories and ensure that adequate supplies of new products can be
delivered to meet customer demands.

Our sales are dependent on indirect distribution channels.

A majority of our sales are through third party
distributors, system integrators and original equipment manufacturers. These
resellers are not required to offer our products exclusively. We cannot be
assured that a reseller will continue to offer our products. In addition many of
our resellers are privately owned firms which may not be well capitalized. If
our ability to sell products through these third parties is impaired, our
results of operations would likely suffer.

Our international sales are subject to risks.

Our international sales may be disrupted by
currency fluctuations or other events beyond our control, including political or
regulatory changes. If our international sales were disrupted for any reason,
our revenue levels would decline.

Our business could suffer if we are unable to protect and enforce
our intellectual property rights.

We rely on a combination of patent, trademark and
trade secret laws and contractual restrictions to establish and protect
proprietary rights in our products and services. There can be no assurance that
our patents, trademarks, or contractual arrangements or other steps taken by us
to protect our intellectual property will prove sufficient to prevent
misappropriation of our technology or defer independent third party development
of similar technologies. Moreover, there can be no assurance that the technology
licenses granted to us from our parent company will continue to be available.
The loss of any of our proprietary technology could require us to obtain
technology of lower quality or performance standards or at greater cost, which
could materially adversely affect our business, results of operations and
financial condition. Furthermore, the laws of certain foreign countries may

not protect our products, services or intellectual property
rights to the same extent as do the laws of the United States.



Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

The market risk inherent in our investments represents
the potential loss arising from adverse changes in interest rates.  We are
exposed to market risk in the area of interest rate changes impacting the fair
value of our investment securities.  Our policy is to invest primarily in money
market accounts and short-term investments held at financial institutions. We do
not have any derivative instruments in our investment portfolio. Due to their
highly liquid nature, our investments are subject to minimal credit and market
risk.



Item 4. CONTROLS AND PROCEDURES.

(a)	Within the 90 days prior to the date of this
report, the Company carried out an evaluation, under the supervision and with
the participation of senior management, including the Company's officers
performing the functions of Chief Executive Officer and Chief Financial Officer,
of the effectiveness of the design and operation of its disclosure controls and
procedures. Based upon that evaluation, the Company's officers performing the
functions Chief Executive Officer and Chief Financial Officer concluded that its
disclosure controls and procedures are effective for gathering, analyzing and
disclosing the information that the Company is required to disclose in reports
filed under the Securities Exchange Act of 1934.

(b)	There have been no significant changes in the
Company's internal controls or in other factors that could significantly affect
internal controls subsequent to the date the Company carried out this
evaluation.

PART II - OTHER INFORMATION

Items 1- 5 are not applicable for this reporting
period.



Item 6. EXHIBITS AND REPORTS ON FORM 8-K.

(a)  The following documents are filed as a part of this Report:



|Exhibit 3.1 -  | Articles of Incorporation, as amended, are incorporated by reference to the
Registrant's Form 10-K for the year ended December 31, 1988, Exhibit 3.1.
|-------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit 3.3 -  | By-Laws are incorporated by reference to the Registrant's Form 10-K for the
year ended December 31, 1985, Exhibit 3.                                 
|Exhibit 4.1 -  | 1997 Employee Stock Purchase Plan is incorporated by reference to the
Registrant's Registration Statement on Form S-8 dated October 2, 1998.         
|Exhibit 4.2 -  | 1997 Stock Plan is incorporated by reference to the Registrant's Registration
Statement on Form S-8 dated October 2, 1998.                           
|Exhibit 21.1 - | Subsidiaries of the Registrant is incorporated by reference to the
Registrant's Form 10-K for the year ended December 31, 2001,	 Exhibit
21.1        
|Exhibit 24.1 - | Power of Attorney is incorporated by reference to the Registrant's Form 10-K
for the year ended December 31, 2001, Exhibit 24.1.                     
|Exhibit 99.1 - | Certification of Chief Executive and Chief Financial Officers                                                                                        

(b)   No Reports on Form 8-K were filed during the first nine months of  2002.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of
1934, the Registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.





SCIENTIFIC TECHNOLOGIES INCORPORATED

Registrant

|Date:  November 13, 2002 |  | /s/Joseph J. Lazzara                                                             
|------------------------ |  | ---------------------------------------------------------------------------------
|                         |  | Joseph J. Lazzara                                                                
|                         |  | President and Chief Executive Officer
(Principal Executive and Financial officer)
|                         |  |                                                                                  
|                         |  |                                                                                  

|                        |  |                                                                        
|----------------------- |  | -----------------------------------------------------------------------
|Date: November 13, 2002 |  | /s/ Richard O. Faria                                                   
|                        |  | Richard O. Faria                                                       
|                        |  | Vice-President, Finance & Administration
(Principal Accounting Officer)

---

I, Joseph J. Lazzara certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Scientific
Technologies Incorporated;

2.	Based on my knowledge, this quarterly report does not contain any
untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

3.	Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

4.	The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a)	designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this quarterly report is being prepared;

b)	evaluated the effectiveness of the registrant's disclosure controls and
procedures as of a date within 90 days prior to the filing date of this
quarterly report (the "Evaluation Date"); and

c) 	presented in this quarterly report our conclusions about the
effectiveness of the disclosure controls and procedures based on our evaluation
as of the Evaluation Date;

5.	The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent functions):

a)	all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to record,
process, summarize and report financial data and have identified for the
registrant's auditors any material weaknesses in internal controls; and

b)	any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal controls;
and

6.	The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.



Date: November 13, 2002

/s/ Joseph J.  Lazzara
President and Chief Executive Officer

---

I, Richard O. Faria certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Scientific
Technologies Incorporated;

2.	Based on my knowledge, this quarterly report does not contain any
untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

3.	Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

4.	The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a)	designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this quarterly report is being prepared;

b)	evaluated the effectiveness of the registrant's disclosure controls and
procedures as of a date within 90 days prior to the filing date of this
quarterly report (the "Evaluation Date"); and

c) 	presented in this quarterly report our conclusions about the
effectiveness of the disclosure controls and procedures based on our evaluation
as of the Evaluation Date;

5.	The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent functions):

a)	all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to record,
process, summarize and report financial data and have identified for the
registrant's auditors any material weaknesses in internal controls; and

b)	any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal controls;
and

6.	The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.



Date: November 13, 2002

/s/ Richard O.  Faria
Vice President Finance and
Administration

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