sigma試劑 EPA 610 多環芳烴混標 EPA 610 Polynuclear Aromatic Hydrocarbons Mixture analytical standard
sigma試劑 雙硫腙 ,Dithizone ,33154 -puriss. p.a., Reag. Ph. Eur., ≥98% (chelatometric), for metal titration
sigma試劑 (Aminomethyl)phosphonic acid,氨甲基膦酸,324817 - 99%
sigma試劑 2,5-Dichloro-1,4-benzoquinone ,2,5-二氯-1,4-苯醌,431974-98%
sigma試劑 2,6-Dichloro-1,4-benzoquinone, 2,6-二氯-1,4-苯醌,431982 - 98%
RD試劑 1671/50PD 102807 (50 mg) ¥13579