field uniform.

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A-A-55281

2.2 Physical requirements . The finished cloth shall conform to the

following physical requirements.

2.2.1 The cured cloth shall have a minimum weight of 6.5 ounces per

square yard when tested according to ASTM-D 3776, Option C. The yarns

per inch shall contain a minimum of 68 for the warp and 34 for the

filling when tested according to ASTM-D 3775. Prior to testing for

yarns per inch, the samples shall be conditioned as directed in ASTM-D

1776 - Practice for Conditioning Textiles for Testing. The minimum

breaking strength shall be a minimum of 125 pounds for the warp and 75

pounds for the filling when tested according to ASTM-D 5034. The

width of the cloth shall be as specified in the contract and shall be

the minimum acceptable width inclusive of selvages.

2.2.2 The cured cloth shall have a dimensional change of not more

than 2.0 percent in the warp or filling direction when tested in

accordance with AATCC 135 (Table I [(1) V A]) with the following

exceptions: The specimens shall be 22 X 22 inches with 18 inch

benchmarks and 140 grams of soap shall be used.

2.2.3 The cloth shall have a seam efficiency of not less than 90

percent when tested in accordance with Method 5110 of FED-STD-191 -

Textile Test Methods. The needle shall measure 0.044

+ 0.001 inch

across the blade at the eye. The thread shall be polyester/cotton in

accordance with A-A-50199, ticket No. 50, 2 ply for the needle and

ticket No. 70, 2 ply for the looper.

2.2.4 The pH value of the water extract of the cloth shall be no less

than 5.0 nor more than 8.5 when tested in accordance with Method 2811

of FED-STD-191 - Textile Test Methods. The starch and protein content

including chloroform-soluble and water-soluble material of the dyed

cloth prior to treatment for nonfibrous material shall not exceed 2.0

percent when tested in accordance with ASTM-D 629 (Section 9).

2.2.5 The finished cloth shall be given an approved durable press and

soil release treatment. The cloth shall be processed so that the

cured cloth shall have an appearance and soil release rating (after

5 launderings) of 3.3 minimum when tested in accordance with AATCC 130

with the following exceptions: The appearance test may be performed

on the same pieces used for the dimensional stability test.

Evaluation shall be in accordance with AATCC Test Method 124. The

soil release test shall be performed after the fourth wash and dry

cycle on the specimens used for dimensional stability. The washing

and drying conditions used for the dimensional stability test shall

apply.

2.2.6 The finished cloth shall contain no more labile sulfur than

the standard sample when tested in accordance with Method 2020 of

FED-STD-191 - Textile Test Methods.

2.2.7 The finished cloth shall show colorfastness to light,

laundering (after 3 cycles), perspiration and crocking equal to or

better than the standard sample. As a limit of acceptability or when

no standard sample is available, the finished cloth shall show a