NATIONAL BUREAU OF STANDARDS REPORT

NBS PROJECT NBS REPORT

0201-30-2320 July 2, 1956 4753

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QUALIFICATION TESTS

OF

LAMPS SUPPLIED TO THE GOVERNMENT

BY

TEN CONTRACTORS

DURING FIRST TEN MONTHS

OF

CONTRACT PERIOD

September 1, 1955 to August 31? 1956

by

S. W. Wilson

and

J. E. Jordan

Photometry and Colorimetry Section

Optics and Metrology Division

U. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

The publication, reprinting, or reproduction of this report in any form, either in whole or in part, is prohibited

unless permission Is obtained in writing from theOffice of the Director, National Bureau of Standards, Washington

25, D. C. Such permission is not needed, however, by a Government agency for which a report has been specifically prepared if that agency wishes to reproduce additional copies of that particular report for its own use.
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1. Purpose of Tests

Paragraphs 1(g) and 1(h) of the Invitation for Bids

for Electric Lamps (class 17, part VI) issued May 16, 1955

provided that any bid to supply lamps to the Government

during the contract period September 1, 1955 to August 31,

195^, would be considered only if the bidder was qualified

under the requirements of applicable Federal Specifications

and also specified means whereby successful bidders could

qualify for the succeeding contract period September 1,

1956 to August 31, 1957. This report gives a summary of

the tests made in accordance with these provisions of the

Invitation for Bids.

2. Procedure

A Government lamp inspector made periodic visits to

the factories or warehouses of contractors supplying lamps

to the Government and inspected these lamps to determine

compliance with applicable Federal Specifications. Samples

from tentatively accepted lots of lamps were selected and

forwarded to the National Bureau of Standards for life test.

Thp life tests of the various categories of lamps were made

in accordance with the requirements of applicable Federal

Specifications as follows:

Lamps Groups

Incandescent, large a-as-rs

Incandescent miniature m

Fluorescent fl

Photographic flash pf

Federal Spec if ic at ion

W-L-lOle

W-L-lllb

W-L-116

W-L-122
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3. Number of Lamps Life-Tested

Lamps as follows, manufactured by current contractors,

were life-tested:

Test No. Lamp Manufacturer Groups

Number

Life-Tested

1 Amplex Corp. rs 58

2 Amplex Corp. Pf 115

3 Arc-Ray Electric Corp. fl 90

4 Champion Lamp Works a-rs 829

5 Champion Lamp Works fl 90

6 Dura Electric Lamp Co. Pf 115

7 General Electric Co. a-as-rs 773

8 General Electric Co. m 95

9 General Electric Co. fl 90

10 General Electric Co. Pf 115

11 Interlectric Corp. fl 90

12 Radiant Lamp Corp. as 20

13 Sylvania Electric Prod. a-as-rs 64o

14 Sylvania Electric Prod. fl 90

15 Sylvania Electric Prod. Pf 115

16 Tung-Sol Electric Inc. m 120

17 Westinghouse Elec. Corp. a-as-rs 271

18 Westinghouse Elec. Corp. m 75

19 Westinghouse Elec. Corp. fl 60

20 Westinghouse Elec. Corp. Pf 115

4. Results

The lamps included in the qualification tests were the

product of ten manufacturers. These were grouped into 20

separate qualification tests as tabulated in Section 3

above. The lamps in each of the 20 tests complied with the

qualification requirements of the applicable Federal Specifications as listed in Section 2 above, in effect on the date

of the tests. Detailed test results are on file at the

National Bureau of Standards.

5. Remarks

Each of the ten contractors currently supplying lamps

to the Government has qualified to have his bid to supply

lamps of the types listed in Section 3 above considered for

the contract period September 1, 1956 to August 31, 1957.
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