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N-(t-Butoxycarbonyl)-L-isoleucine N-Hydroxysuccinimide Ester
CAPCELL PAK C18 BB S3 4.6X150
20MM 磁 COMBI 密封垫
LiChroCART 250-4,LiChrospher 100 RP-18e 5μm定制柱
ASTM-THERMOMETER (SOLID STEM) WITH CELSIUS-SCALE RANGE, YELLOW ENAMELLED ASTM TYPE: BUTADIENE BOIL
1,4-二氯-2-碘苯
7种阴离子混标,200mg/L溶于2% HNO3
液体样品中的维生素C-质控样
测试管
(定制产品)5种阴离子混标,Fluoride/Chloride/Nitrate/Phosphate/Sulfate,1000mg/L溶于H2O