AATCC 200-2015 Drying Rate of Textiles at their Absorbent Capacity: Air Flow Method

AATCC 200-2015 Drying Rate of Textiles at their Absorbent Capacity: Air Flow Method. 4. Safety Precautions NOTE: These safety precautions are for information purposes only. The precautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST be consulted for specific details such as materials safety data sheets and other manufacturer’s recommendations. All OSHA standards and rules must also be consulted and followed. 4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas. 4.2 The manufacturer’s safety recom- mendations should be followed when operating laboratory testing equipment. 5. Uses and Limitations 5.1 This test is performed under controlled laboratory temperature and relative humidity conditions. 5.2 In order to provide consistent results, consistent air flow is needed. The apparatus used in this method uses 2.5 ± 0.5 m/s air flow through a 13 ± 0.1 cm diameter opening with no specimen present. The results will vary if other rates of air flow are used. While the test may be performed at alternative conditions, for comparison of results, the same conditions must be used. 5.3 This method is limited to textiles— tested on the non-face side—that exhibit a maximum absorbency time of 30 s as measured by AATCC Test Method (TM) 79, Absorbency of Textiles (see 14.1). It is not applicable to textiles that exhibit absorbency of more than 30 s. 6. Apparatus and Materials 6.1 Temperature recorder, with capa- bilities to take readings every 1 s, data storage and transmittal to computer data file (see Fig. 1). 6.2 Infrared thermocouple probe— temperature range of 15.0-50.0 ± 0.1°C (59.0-122.0 ± 0.18°F) (see Fig. 1). 6.3 Fan box (16.5 ± 0.1 × 16.5 ± 0.1 × 27.5 ± 0.1 cm) which generates 2.5 ± 0.5 m/s of air flow through a 13.0 ± 0.1 cm diameter opening (see Fig. 1). 6.4 Variable volume micropipette(s) (range from 0.050 to 1.000 ± 0.8% mL) (see Fig. 4) or a high precision pump. 6.5 Paper towels, 5 × 14 cm, a color that will exhibit a color change when wet (light blue preferred) (see Fig. 1). 6.6 Anemometer—hot wire-type, capa- ble of measuring air flow from 0.1 to 5.0 ± 0.1 m/s (see Fig. 1). 6.7 Embroidery hoop (see 14.1). 6.8 Deionized or distilled water. 6.9 Rigid material...