All CJSHA standards and rules must

All CJSHA standards and rules must also be consulted and followed. 4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas5. Apparatus and Materials (see 12.1》S.1 Heating device, providing even heat transfer to the specimen from the top by close contact at a controlled temperature (see 7.1,12.2 and 12.5) and giving a pressure on the specimen of 40士10 g/cm2(see 12.4) 5.2 a smooth heat resistant sheet (see 12.3). 5.3 wool flannel of approximately 260 g/m2(see 12.4).tow layers of this material are used to make a pad of approximately 3 mm thickness.similar ,smooth wool fabrics or felt to give a pad ahont 3mm thick could he used. 5.4 An undyed, bleached and not mercerized cotton cloth. with a smooth surface 100-130 g/mz. 5.5 Gray Scale fbr Color Change (AATCC valuation Procedure l) {see 12.7) 5.C Gray Scale for Staining (AATCC Evaluation Procedure 2) (see 12.7). 5.7 AATCC 9-Step Chromatic Transference Scale (AAtCC Evaluation Procedure 8) (see 12.7)6. Test Specimen 6.1 lithe textile to he tested is fabric, a piece 12 x 4 ccn is required 6.2 ti the textile to be tested is yarn or thread, knit it into a fabric and use a piece 13 x 4 cm or wind it around a piece of thin inert material 12 x 4 cm to obtain the area of the textile for test.