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对苯二异氰酸酯
3,3-二氟吡咯烷盐酸
苋菜红溶液标准物质
Volumetric flask, PMP, class B, with screw cap, PP, 500 ml
Filter Bottle, Erlenmeyer 2 Ltr
ProElut C8 2g / 12mL 20/pk
钯(Pd)标准溶液
二硫化碳99.9% HPLC级
土壤中的六价铬质控样
Dissecting kit, 8 pcs. in case, consisting of: 1 scissor sharp, 1 scalpel 35 mm blade, 1 dressing scissors, 1 disccection needle, 1 forcep blunt, 1 scalpel 45 mm blade, 1 forcep sharp, 1