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二溴一氯甲烷,分析标准品
Natural Rubber Tubing, inner ? 12 mm, outer ? 17 mm, wall thickness ? 2.5 mm, red, temperature range -30°C+70°C, for water and gas Pack = 25 m
Octyltriphenylphosphonium Bromide
2-氯-4-(三氟甲基)嘧啶
500mL蓝色洗瓶
BOTTLES NARROW NECK SECURE CAP HDPE, 500 ml
Silica gel 60 F254 TLC薄板(铝板)
Hydrion 表明 pH测试铅笔(0-13 pH )
2,6-二甲氧基吡啶-3-羧酸
其他