符合RoHS指令要求塑胶（polyethylene)参考标准物质，含四种重金属，100克颗粒/瓶

ERM-EC680k低浓度 RoHS标准分析，100克颗粒/瓶
材料Low-density polyethylene, LDPE, plastic,组分浓度值如下:

Cd Cadmium 19.6mg/kg(certified)
As Arsenic 4.1mg/kg (certified)
Br Bromine 96 g/kg (certified)
Cl Chlorine 102.2 mg/kg (certified)
Pb Lead 13.6 mg/kg (certified)
S Sulfur,Sulphur 76 mg/kg (certified)
Zn Zinc 137(ind.) g/kg (indicative)
Sn Tin 15.3 (ind.) mg/kg (indicative)
Sb Antimony 10.1 mg/kg (certified)
Cr Chromium 20.2 mg/kg (certified)
Hg Mercury 4.64 mg/kg (certified