Several methods that can identify plastic bags

Discriminating whether the toxicity of the plastic bag method:

Hand touch color detection: non-toxic, colorless and transparent or milky white, hand touch lubrication sense surface like a wax-like sense; toxic cloudy or yellow color, red, black, sticky feel.

Jitter detection method: Grasp the plastic bag shaken hard, crisp sound non-toxic; toxic muffled astringent.

Fire detection: non-toxic, flammable, flame tip yellow, the local was blue, burning like a candle dripping paraffin taste; toxic and non-flammable, away from the fire is put out, the flame tip yellow, the bottom of the green, softening can pull into a filament.

It is learned that the color of plastic bags ninety unqualified, can not be used to hold food, especially the black plastic bag is more dangerous.