ASTM-D4198 Historical Revision Information
Standard Test Methods for Evaluating Absorbent Pads Used with Membrane Filters for Bacteriological Analysis and Growth

ASTM-D4198 - 1982 R03 EDITION - SUPERSEDED
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Standard Test Methods for Evaluating Absorbent Pads Used with Membrane Filters for Bacteriological Analysis and Growth 
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Scope

1.1 These test methods cover the determination of the nutrient-holding capacity and the toxic or nutritive effect on bacterial growth of organisms retained on a membrane filter, when the absorbent pad being tested is used as a nutrient reservoir and medium supply source for the retained bacteria.

1.2 The tests described are conducted on 47-mm diameter disks, although other size disks may be employed for bacterial culture techniques.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

These test methods are appropriate for qualifying absorbent pads used with membrane filters for bacteriological enumeration.

5.1.1 The test methods described are applicable to quality control testing of absorbent pads by the suppliers and users of these pads and to specification testing of absorbent pads intended for use with membrane filters in bacteriological enumeration.

Other pure culture organisms and their appropriate culture medium may be substituted for the E. coli and M-FC media for specification testing, as required.

Keywords

absorbent pads; bacteriological; filter membranes; ICS Number Code 07.100.10 (Medical microbiology)

To find similar documents by ASTM Volume:

11.02 (Water (II))

To find similar documents by classification:

07.100.10 (Medical microbiology Laboratory medicine, see 11.100)

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Document Number

ASTM-D4198-82(2003)

Revision Level

1982 R03 EDITION

Status

Superseded

Modification Type

Reapproval

Publication Date

Dec. 1, 2003

Document Type

Test Method

Page Count

3 pages

Committee Number

D19.08