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卵磷脂
TLC plates, 200 x 200 mm, thickness:0,20 mm, glass polyester sheets SIL G Case = 25 pcs.
氧化铌(Ⅴ),99.9%
快速水质分析仪
8种元素 ICP内标溶液,100 µg/mL, 10% HNO3, tr. HCl
125ml棕色玻璃广口瓶,含PP盖子及LKD内衬,DIN 40
Parathion-methyl标准品,10ng/ul于环己烷
Extraction thimbles, I-?:33 mm, length:80mm, cellulose Case = 25 pcs.
Talboys 酸洗氧化锆研磨珠,200微米
3-戊酮