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BURETTES DIN B 5 ML:0,02, WITH TWO WAY STOPCOCK, ST-GLASS-PLUG, AMBER GLASS
中性红
铬粉 200目 3.5N(沪试)
(一恒) LRH-150F生化培养箱,150L,无氟环保型
EC肉汤颗粒
250x3mm 5um Hypersil GOLD Silica
7-羟基-8-[(4-磺苯基)偶氮]-1,3-萘磺酸三钠
pH indicator paper, duotest, pH 7.0-10.0 width 10 mm, roll 5 m
FILTER FUNNELS, 1000 ML, P0 DISC DIA.: 120 MM STEM O.DIA.: 22 MM
砷离子标液,As3+, 1000 mg/L溶于2% NaOH