... OIML E1,E2,F1 calibration weight 3, ASTM class 0,1,2 standard weight 4, test weight PREMIUM LINEBrandFuyueMaterialJF-1 stainless ... laboratory, chemical, medical, commercial and educational use Single weight available: 1mg,2mg,5mg,10mg,20mg,50mg,100mg,200mg ... weight available.Welcome to our company:No.8 Construction Road, Choumou,Bieqiao Town,Liyang City,Jiangsu Province,China. standard weight