People's living standards are improving day by day. Consciousness of consumption is also constantly improving. Some high-quality, multi-functional garments are increasingly favored by consumers. As azo dye (AZO) will decompose carcinogens, seriously affecting their health; and these dyes are usually colorless and odorless, can not be perceived by the human sensory organs, or even by washing and other ways to reduce the harm, so the domestic This type of dye is disabled in all textile standards.  
 
    Azo testing is one of the items to be inspected in the international environmental protection requirements. The standard stipulates that 24 kinds of azo dye intermediates should not be included in the seized products. If one of the azo dyes is detected, it will be an unqualified product.  
 
Applicable samples
■   clothing, bedding, towels, wigs, fake eyebrows, hats, diapers, and other cleaning products, sleeping bags
  shoes, gloves, watch band, handbag, all kinds of wallets, briefcases, chair cover
  Textile or leather toys, toys with textile or leather garments,   Synthetic dyes Organic compounds dyes
  Consumer end fabrics and yarns
 
Common azo test standards
GB / T17952-2011, GB18401-2010
EN14362-1: 2003
CENISO / TS17234: 2003
...
The main reference to the national standard method, but also according to ASTM / IEC / EN / DIN and other national standards for azo testing.