AATCC 157 pdf free download

AATCC 157 pdf free download.Colorfastness to Solvent Spotting: Perchloroethylene.
3. Terminology 3.1 colorfastness, n.- the resistance of a material to change in any of its color characteristics, to transfer of its color- ant(s) to adjacent materials or both, as a result of the exposure of the material to any environment that might be encoun- tered during the processing, testing, stor- age or use of the material. 3.2 migration, n.- the nonuniform movement and distribution of dyes, pig- ments, finishes or other materials from one part of a material to another. 3.3 spotting, n.- -in cleaning, applica- tion of solvent or solution to a material prior to or after commercial scouring, laundering, or drycleaning to remove or enhance removal of soil or stains in a lo- cal area. 4. Safety Precautions NOTE: These safety precautions are for information purposes only. The pre- cautions are ancillary to the testing proce- dures and are not intended to be all inclu- sive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufac- turers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommenda- tions. 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 All chemicals should be handled with care. 4.3 Perchloroethylene is toxic by inha- lation, by repeated contact with skin and by ingestion; it should be used only in a . well vented atmosphere. Toxicology studies with laboratory animals have shown evidence of cancer in rats and mice exposed to perchloroethylene va- pors at 100-400 ppm concentrations for prolonged times. Fabric saturated with this solvent should be dried in an ade- quately ventilated hood. Use chemical goggles or face shield, impervious gloves and an impervious apron when handling perchloroethylene. 4.4 An eyewash/safety shower should be located nearby and an organic vapor respirator should be readily available for emergency use. 4.5 Exposure to chemicals used in this procedure must be controlled at or below levels set by governmental authorities (e.g., Occupational Safety and Health Administration’s [OSHA] permissible exposure limits [PEL] as found in 29 CFR 1910.1000 of January 1, 1989). In addition, the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values (TLVs) comprised of time weighted averages (TLV-TWA), short term exposure limits (TLV-STEL) and ceiling limits (TLV-C) are recommended as a general guide for air contaminant exposure which should be met (see 10.2).5. Apparatus, Materials and Reagents 5.1 Pipette, graduated to deliver 1.5 mL. 5.2 Plate, glass. 5.3 AATCC Chromatic Transference Scale (see 10.1). 5.4 White AATCC Textile Blotting Pa- per (see 10.1). 5.5 Perchloroethylene; technical or commercial grades are acceptable. 6. Test Specimen 6.1 Piece of dyed fabric, 25 x 25 mm (1x 1 in.).8. Evaluation Method for Staining 8.1 Rate the degree of stain on the blot- ter using the Chromatic Transference Scale. Grade 5- negligible or no color trans- fer. Grade4.5- color transfer equivalent to Step 4- 5 on the Gray Scale for Staining or Row 4.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 4 color transfer equivalent to Step 4 on the Gray Scale for Staining or Row 4 on the 5-step or 9-step AATCC Chromatic Transference Scale. Grade 3.5- color transfer equivalent to Step 3-4 on the Gray Scale for Staining or Row 3.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 3- color transfer equivalent to Step 3 on the Gray Scale for Staining or Row 3 on the 5-step or 9-step AATCC Chromatic Transference Scale. Grade 2.5- color transfer equivalent to Step 2-3 on the Gray Scale for Staining or Row 2.5 on the 9-step AATCC Chro- matic Transference Scale.AATCC 157 pdf download.