Vitamin D2

维生素D2

挥发性石油烃混标 / VPH 用标准品, VPH Solution,200 μg/mL in MeOH

VPH 保留时间用标准品 / VPH 6种套标, VPH Retention Time Marker,2000 μg/mL in MeOH

硬度标准品, Hardness Standard,1000 μg/mL in Water, tr Nitric acid

PH-4,水溶剂, Inorganic Wet Chemical pH Std,pH 4 in Water

总有机卤化物, TOX Standard,1000 μg/mL in Methanol

总余氯标准品, Total Residual Chlorine Standard,1000 μg/mL in Water

21种耐磨金属混标, Wear Metals Standard,10 μg/g in 75 cSt Base oil

21种耐磨金属混标, Wear Metals Standard,50 μg/g in 75 cSt Base oil

旧润滑油中的添加元素、磨损金属和污染物标准品ASTM D-5185-97, 21 Element Wear Metal Standard,500 μg/g in Mineral oil