AATCC 28 pdf free download

AATCC 28 pdf free download.Insect Pest Deterrents on Textiles.
1. Purpose and Scope
1.1 This test method covers procedures for the evaluation of compounds or treatments designed to protect textile fabrics and yams from damage by insect pests, such as moths or carpet beetles. They comprehend not only the initial protection furnished by the treatment, but also the permanency of the protection during conditions of ordinary service.
2. Principle
2.1 Treated and untreated specimens are subjected to the action of insect pests under controlled conditions for one exposure period and then examined for evidence of damage. Additional exposure periods are given as necessary until visual damage is evident.
3. Terminology
3. 1 insect resistance, n.—in textiles, the capability to impede damage by insects.
4. Safety Precautions
NOTE: These saIty statements 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. Manufachirers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendations. All OSHA standards and rules must 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. Use chemical goggles or face shield, impervious gloves and an impervious apron during dispensing and mixing of the chemicals used in this test method.
4.3 Perchloroethylene is toxic by inhalation, by repeated contact with the skin and by ingestion. It must be used only in a well vented atmosphere. Toxicology studies with laboratory animals have shown evidence of cancer in rats and mice exposed to perchioroethylenc vapors at 100-400 ppm concentrations for prolonged times. Fabric saturated with this solvent must be dried in an adequately ventilated hood.
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 (ACGIII) 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 18.7).
5. Apparatus and Materials
5.1 Flatiron
5.2 Moth cloth (see 18.1)
5.3 Perchloroethylene
5.4 Stoddard solvent
6. Test Specimens
6.1 Test specimens are prepared by applying the treatment or compound to be tested in the desired proportion to a piece of standard pure undyed scoured wool (see 18.1). After application, the specimen is thoroughly aired for a period of not less than 7 days for the removal of all volatile constituents. The size of the piece should be sufficient to furnish specimens for all of the service tests to which it is to be subjected.
6.2 If it is desired to determine the resistance of the treatment on a special fabric, test specimens are prepared as described in 6.1 using the special fabric instead of the standard fabric.AATCC 28 pdf download.