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5种元素ICP-MS混标,As/Sb/Se/Tl/Li,溶于5% HNO3 + Tr HF
Papers for chromatographie, 200 x 200 mm, thick, medium Case = 100 pcs.
25F-LC 25UL 进样针
2-十二烷基环丁酮
L-丝氨酸乙酯盐酸盐
REAGENT BOTTLES, WIDE NECK WITH STANDARD GROUND JOINT,
Shodex Silica C18M 4D色谱柱
葡萄糖酸 溶液,49-53 wt. % in H2O
邻苯二甲酸二丁酯
1-溴-2,3,4-三氟苯