钠标准溶液,500ML, SODIUM REF STD SOL CERTF 500ML

亚甲基蓝,10GR, Methylene Blue

十二磷钼酸, dodeca-Molybdophosphoric acid

液体石蜡,2.5LT, Paraffin liquid

pH缓冲液,20L, BUFFER COLORED RED PH 4 20L

2-苯乙胺盐酸盐 25GR, 2-Phenylethylamine hydrochloride

化学品, 4-Phenylpiperidine

羟胺-O-磺酸, Hydroxylamine-O-sulfonic Acid

对羟基肉桂酸, p-Hydroxycinnamic acid

2-丙烯-1-磺酸钠盐, 2-Propene-1-sulfonic acid sodium salt