1, water testing method: the non-green bags placed in water, and press into the bottom, a small proportion of non-toxic non-environmental bags can be surfaced, toxic non-recyclable bags than major, sinking.
2, fire detection method: Non-toxic polyethylene non-green bag is flammable, the flame is blue, the upper end of the yellow, burning like a candle tears, there is a paraffin smell, smoke less; toxic PVC non-friendly bags is not easy Fire, extinguishes from the fire, the flame is yellow, the bottom is green, soften can pull, there is a pungent odor of hydrochloric acid.
3, jitter detection method: use the hand to grasp the non-green bag on one end with a strong shake, issued a crisp sound non-toxic; sound boring and astringent are toxic.
4. Sensory detection method: non-toxic non-reusable bags are milky white, translucent, or colorless and transparent, flexible, feel lubricated, and the surface appears to have wax; toxic non-reusable bags are cloudy or yellow in color, and their touch is sticky.