Colorfastness to Water

AATCC 107-2012 pdf free.Colorfastness to Water.
6. Test Solution
6.1 Distilled water or deionized water from an ion-exchange device.
7. Test Specimens
7.1 If the spec imen to be tested is a fabric, attach a piece of multifiber adjacent fabric also measuring 5 x 5 ± 0.2 to the specimen measuring 6 x 6 ± 0.2 cm by sewing along one of the shorter sides, rjth the multifiber fabric next to the face of the specimen.
7.2 If the specimen to be tested is a yarn or loose fiber, take a mass of the yarn or loose fiber approximately equal to one half of the combined mass of the adjacent fabrics. Place it between a 5 x 5 ± 0.2 cm piece of multifiher fabric and a
6 x 6 ± 0.2 cm piece of the non-dyeable fabric, and sew along all four sides.
8. Procedure
8.1 Immerse the test specimen in the test solution which is at room temperature with occasional agitation to ensure thorough wetting out (approximately 1 5 mm generally required for average fabrics) (see 1 2.4).
8.2 Remove the test specimen from the test solution and only pass between squeeze rolls (wringer) to remove excess liquor when the wet weight of the test specimen is more than 3 times its dry reight. Whenever possible, the wet weight should be 2.5-3.0 times the dryweight.
8.3 Place the test specimen betweenglass or plastic plates and insert in thespecimen unit of the perspiration tester.Adjust the perspiration tester to produce apressure of 4.5 kg (10.0 lb) on the testspecimen (see 12.2).
8.4 Heat the loaded specimen unit in anoven at 38 1°C(100 2°F) for 18 h.
8.5 Remove the tester from the ovenand for cach test specimen assembly, separate the multifiber fabric and, if used, the adjacent fabric from the test fabric.Place the multifibcr fabric and test fabricspecimens separately on a wire screen in a conditioned atmosphere 21王1 C (70 2°F) and 65 2% relative humidity overnight.
9. Evaluation Method for Color Change
9.1Evaluate the test specimen forchange in color by comparison with the AATCC Gray Scale for Color Change(AATCC Evaluation Procedure 1), or by using AATCC Evaluation Procedure i,Instrumental Assessment of the Changein Color of a Test Specimen, and recordthe numerical rating that corresponds tothe appropriate one on the Gray Scale.
10. Evaluation Method for Staining
10.1 Evaluate the staining of the multi-fiber fabric used (see 12.5) by compari-sonwith the AATCC Gray Scale forStaining (AATCC Evaluation Procedure2), the AATCc 9-Step Chromatic Trans-ference Scale(AATCC Evaluation Procedure 8), or Instrumental Assessment ofDegree of Staining (AATCC EvaluationProcedure 12),and record the numericalrating that corresponds to the appropriateone on either of them. Report which scaleis used (see 12.6).
11.Precision and Bias
11.1 Precision. Precision for this testmethod has not been established. Until aprecision statement is generated for thistest method, use standard statistical techniques in making any comparisons of test results for either within-laboratory orbeweenr laboratory averages.
11.2 Bias. Colorfastness to water canbe defined only in terms of a test method.There is no independent method for determining the true value. As a means ofestimating this property, the method hasno known bias.
12.1 For potential equipment information pertaining to this test method, please visit the online AATCC Buyer Guide at http:// www.aatcc.org/bg. AAT(’C provides the possibility of listing equipment and materials sold by its Corporate members, but AATCC does not qualify, or in any way approve, endorse or certify that any of the listed equipment or materials meets the requirements in its test methods.
12.2 Horizontal Perspiration Tester Put all
21 glass or plastic plates into the unit regardless of the number of specimens. Atler the final glass or plastic plate is put in position on top, set the dual plates with compensating springs in position. Place the 3.6 kg (8.0 lb) weight on top making a total of 4.5 kg (10.0 lb) under the pressure plate. Lock the pressure plate in position by turning the thumbscrews. Remove the weight. Place the unit in the oven on its side,
so that the plates and the specimens are vertical. Vertical Perspiration Tester: The plates are held in a vertical position between an indicating scale with a fixed metal plate at one end and an adjustable metal plate at the other end.By means of adjusting screws, the movable plate may be made to exert increasing pressure against the test specimens. When the desired pressure of 4.5 kg (10.0 lb) is indicated on the scale, lock the specimen in it by a set screw.AATCC 107 pdf download.Colorfastness to Water