1. We can observe the non-toxic plastic bags are mainly translucent, milky white, colorless or feel good, smooth feeling, as if the surface has wax; toxic, but the color is cloudy, feel sticky, pale yellow and so on.
2. Toxic plastic bags if put into the water and put it into the bottom will sink, non-toxic plastic bags will float small proportion.
3. Recycled plastic bags have an unpleasant odor.
4. Take a plastic bag, grab a corner with the hand, shake hard, sound crisp is non-toxic, sound dull is poisonous.
5. Non-toxic plastic bags combustion flame is blue, a paraffin flavor, but the toxic is green.