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 March 31, 2003 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 [   ],

Indicate by check mark whether the registrant is an accelerated filer
 (as defined in Rule 12b-2 of Act). Yes [  ]    NO [X]

Common stock outstanding as of April 30, 2003 was 9,685,274 shares.









SCIENTIFIC TECHNOLOGIES INCORPORATED

                           Quarter Ended March 31, 2003
                                     INDEX



|PART I.   Financial Information                                                                                       | Page No.
|--------------------------------------------------------------------------------------------------------------------- | --------
|                                                                                                                      |         
|Item 1.   Financial Statements
                  (unaudited):                                                         |         
|                                                                                                                      |         
|Condensed Consolidated Balance Sheets as of
          
     March 31, 2003 and December 31, 2002                      | **      
|                                                                                                                      |         
|Condensed Consolidated Statements of Operations for the
          
    Three Months ended March 31, 2003 and 2002     | **      
|                                                                                                                      |         
|Condensed Consolidated Statements of Cash Flows for the
          
    Three Months ended March 31, 2003 and 2002     | **      
|                                                                                                                      |         
|Notes to Condensed 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 1 - FINANCIAL INFORMATION

ITEM 1 - FINANCIAL STATEMENTS

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SCIENTIFIC TECHNOLOGIES INCORPORATED

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

|Assets                               | Mar. 31, 2003 | Dec. 31, 2002
|------------------------------------ | ------------- | -------------
|Current assets:                      |               |              
|Cash and cash equivalents            | $ 2,498       | $ 2,620      
|Accounts and notes receivable, net   | 7,392         | 7,636        
|Inventories                          | 9,724         | 8,719        
|Deferred income taxes                | 2,380         | 2,380        
|Receivable from Parent               | 415           | 384          
|Other current assets                 | 455           | 527          
|Total current assets                 | 22,864        | 22,266       
|                                     |               |              
|Property and equipment, net          | 3,779         | 3,725        
|Goodwill and other intangible assets | 11,279        | 11,593       
|Other assets                         | 309           | 308          
|Total assets                         | $38,231       | $37,892      

Liabilities and Shareholders' Equity

|Current liabilities:                         |        
|-------------------------------------------- | -------
|Accounts payable                             | $ 2,989
|Accrued expenses                             | 3,041  
|Current portion of capital lease with Parent | 68     
|Total current liabilities                    | 6,098  
|                                             |        
|Capital lease with Parent                    | 215    
|Deferred income taxes                        | 2,064  
|Total liabilities                            | 8,377  

Shareholders' equity:

|Common stock; $.001 par value; 100,000 shares
authorized; 9,685 and 9,687 shares issued and
outstanding | 10      | 10     
|------------------------------------------------------------------------------------------------------- | ------- | -------
|Capital in excess of par value                                                                          | 5,695   | 5,681  
|Retained earnings                                                                                       | 24,149  | 24,059 
|Total shareholders' equity                                                                              | 29,854  | 29,750 
|Total liabilities and shareholders' equity                                                              | $38,231 | $37,892
|                                                                                                        |         |        

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
|---------------------------------------------------------- | --------------------------
|                                                           | Mar. 31, 2003             
|Sales                                                      | $12,959                   
|Cost of sales                                              | 7,413                     
|Gross profit                                               | 5,546                     
|                                                           |                           
|Operating expenses:                                        |                           
|Selling, general and administrative                        | 4,084                     
|Research and development                                   | 1,173                     
|Amortization of intangible assets                          | 165                       
|Total operating expenses                                   | 5,422                     
|                                                           |                           
|Income (loss) from operations                              | 124                       
|                                                           |                           
|Interest and other income, net                             | 21                        
|                                                           |                           
|Income (loss) before income taxes                          | 145                       
|                                                           |                           
|Provision for (benefit from) income taxes                  | 55                        
|                                                           |                           
|Net income (loss)                                          | $90                       
|                                                           |                           
|Net income (loss) per share:                               |                           
|Basic and diluted                                          | $ 0.01                    
|                                                           |                           
|Shares used to compute net income per share:
Basic
Diluted | 9,685
9,720               
|                                                           |                           

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 three months ended
|----------------------------------------------------------------------------------------------------------- | --------------------------
|                                                                                                            | Mar. 31, 2003             
|                                                                                                            |                           
|Cash flows from operating activities                                                                        |                           
|Net income (loss)                                                                                           | $ 90                      
|Adjustments to reconcile net income (loss) to cash                                                          |                           
|provided by operating activities:                                                                           |                           
|Depreciation and amortization                                                                               | 658                       
|Changes in assets and liabilities                                                                           |                           
|Accounts receivable                                                                                         | 244                       
|Inventories                                                                                                 | (1,005)                   
|Receivable from Parent                                                                                      | (31)                      
|Other assets, current and non-current                                                                       | 71                        
|Accounts payable                                                                                            | 47                        
|Accrued expenses                                                                                            | 205                       
|Cash flows provided by operating activities                                                                 | 279                       
|                                                                                                            |                           
|Cash flows from investing activities                                                                        |                           
|Purchase of property and equipment                                                                          | (398)                     
|Investment in affiliate                                                                                     | --                        
|Cash flows used in investing activities                                                                     | (398)                     
|                                                                                                            |                           
|Cash flows from financing activities                                                                        |                           
|Repayment of capital lease with Parent                                                                      | (17)                      
|Issuance of common stock                                                                                    | 14                        
|                                                                                                            |                           
|Cash flows used in financing activities                                                                     | (3)                       
|                                                                                                            |                           
|Change in cash and cash equivalents                                                                         | (122)                     
|                                                                                                            |                           
|Cash and cash equivalents at beginning of period                                                            | 2,620                     
|Cash and cash equivalents at end of period                                                                  | $2,498                    
|Supplemental disclosure of cash flow information:
     Cash paid to (received from) Parent for income taxes | $55                       

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)

1. INTERIM FINANCIAL STATEMENTS

The accompanying condensed consolidated financial statements for the three
months ended March 31, 2003 and 2002 are unaudited and 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 at the date of the financial statements and revenue and expenses
during the reporting period. 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 audited consolidated
financial statements and the notes thereto included in its 2002 Annual Report on Form 10-K.

STOCK-BASED COMPENSATION

Statement of Financial Accounting Standards ("SFAS") No. 148, issued in
December 2002, amends SFAS No. 123 to require that disclosures of the pro forma effect of using
the fair value method of accounting for stock-based employee compensation be presented on a
quarterly basis and displayed more prominently and in a tabular format. The following table sets
forth the effect on the Company's net income (loss) and net income (loss) per share as if the
Company had recorded compensation costs based on the estimated grant date fair value as defined by
SFAS No. 123 for all granted stock-based awards (in thousands, except per share amounts).



|                                                                                                                              | Three Months Ended March 31,
|----------------------------------------------------------------------------------------------------------------------------- | ----------------------------
|                                                                                                                              | 2003                        
|Net income (loss), as reported                                                                                                | $ 90                        
|Add: Stock-based employee compensation expense
     included in reported net income (loss)                                    | -                           
|Deduct: Stock-based employee compensation expense
    determined under fair value based method for
    all awards, net of tax | 26                          
|Pro forma net income (loss)                                                                                                   | $64                         
|Net income (loss) per share - basic and
   diluted:                                                                           |                             
|As reported                                                                                                                   | $0.01                       
|Pro forma                                                                                                                     | $0.01                       

2. INVENTORIES

Inventories consist of the following (In thousands):

|                | Mar. 31, 2003 | Dec. 31, 2002
|--------------- | ------------- | -------------
|Raw materials   | $4,640        | $4,501       
|Subassemblies   | 862           | 1,016        
|Work in process | 1,772         | 1,043        
|Finished goods  | 2,450         | 2,159        
|                | $9,724        | $8,719       

3. 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 March 31, 2003                 |                |       
|Basic earnings per share calculation              | $ 90           | 9,685 
|Effect of dilutive securities
      Stock options |                | 35    
|Diluted earnings per share calculation            | $ 90           | 9,720 
|Three months ended March 31, 2002                 |                |       
|Basic loss per share calculation                  | $ (207)        | 9,676 

4. COMPREHENSIVE INCOME (LOSS)

For the three months ended March 31, 2003 and 2002, there
is no significant difference between net income (loss) and comprehensive income (loss).

5. SEGMENT REPORTING AND OTHER INFORMATION

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



|                       | Three months ended
|---------------------- | ------------------
|                       | March 31,         
|Safety Products        | 2003              
|Sales                  | $11,078           
|Group operating profit | 647               
|                       |                   
|Automation Products    |                   
|Sales                  | $ 1,881           
|Group operating loss   | (523)             
|                       |                   
|                       | At                
|                       | Mar. 31           
|Total Assets           | 2003              
|Safety Products        | $29,116           
|Automation Products    | 9,115             
|Total                  | $38,231           

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 months ended March 31, 2003 and 2002.

6. COMMITMENT AND CONTINGENCIES

The Company offers warranties on certain products and records a liability for the
estimated future costs associated with warranty claims, which is based upon historical experience
and the Company's estimate of the level of future costs. A reconciliation of the changes in the
Company's warranty liability follows (in thousands):



|Warranty accrual at January 1, 2003
   Accruals for warranties issued
   Expenses incurredWarranty accrual at March 31, 2003 | $ 241
                    56
                (56)$ 241
|---------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------

As permitted under Oregon law the Company has agreements whereby the Company
indemnifies its officers and directors for certain events or occurrences while the officer or
director is, or was serving at the Company's request in such capacity. The indemnification term is
for the period that the officer or director is serving in such capacity or is subject to any
possible claim or action by reason of the fact that the Indemnitee was serving in that capacity. The
maximum potential amount of future payments by the Company could be unlimited; however the Company
has a director and officer insurance policy that limits the Company's exposure and enables the
Company to recover a portion of any future amounts paid. As a result of the insurance policy
coverage, the Company believes that the estimated fair value of these agreements is minimal.



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 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 March 31, 2003 increased 15% to $12,959 from
$11,229 in the comparable period in 2002. During the first quarter of 2003, we experienced an
increase in shipments in both the Safety Products Group ("SPG") and Automation Products Group
("APG"). As a result of continuing sluggishness in the semiconductor markets our sales growth at APG
was not as robust as SPG.

Gross margin as a percentage of sales for the first quarter of 2003 remained
constant at 43% for the first quarters of 2003 and 2002.

Selling, general and administrative expenses for the three months ended March
31, 2003 increased 8% to $4,084 from $3,773 in the same period of 2002. This was a result of
costs associated with the higher sales levels. We were able to keep our selling, general and
administrative expense percentage increases in the first quarter of 2003 to almost 50% of the rate
of sales increase. As a percent of sales for the three months ended March 31, 2003, selling, general
and administrative expenses were 32% compared to 34% for the same period in 2002.

Research and development expenses for the first quarter of 2003 declined 6%
to $1,173 from the $1,248 recorded in the first three months of 2002. This was primarily the result
of lower consulting expenses in the first quarter of 2003 compared to the comparable 2002 period. As
a percent of sales for the three months ended March 31, 2003, research and development expenses were
9% compared to 11% for the same period of 2002.

Our effective income tax rate for the three months ended March 31, 2003 was 38%.
As a result of the loss sustained in the first quarter of 2001, we recorded an income tax benefit of
38%. Income taxes payable or receivable are calculated on a stand alone basis and are recorded as a
payable to or receivable from our parent, who files a consolidated tax return which includes our
accounts.

Intercompany transactions between our parent company and us include charges
to our parent for management services provided by us, dividend payments to our parent and other cash
transfers.

Liquidity and Capital Resources

At March 31, 2003, our working capital increased slightly to $16,752
compared to $16,428 reported at December 31, 2002.

Available bank borrowings were $6,100, all of which were unused at March 31,
2003. We believe that cash from operations, together with cash resources and available bank
borrowings, will be sufficient to fund working capital requirements for the next twelve months.

Critical Accounting Policies

A discussion of our critical accounting policies is set forth in our 2002
Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on March 3l,
2003. There were no material changes in any of our critical accounting estimates or judgments during
the first quarter of 2003.

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 of 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 24.1 - | Power of Attorney is incorporated by reference to the Registrant's Form 10-K
for the year ended December 31, 2002, 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 three months of 2003.

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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: May 12, 2003 |  | /s/Joseph J. Lazzara  
                  Joseph J. Lazzara
                  President and Chief Executive Officer
                  (Principal Executive Officer)
|------------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



|Date: May 12, 2003 |  | /s/ Richard O. Faria  
                  Richard O. Faria
                  Vice-President and Chief Financial Officer
                  (Principal Financial 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 function):

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: May 12, 2003

/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 function):

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: May 12, 2003

/s/ Richard O.  Faria
Vice President and Chief Financial Officer

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