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15种农残混标 标准品
胰蛋白胨大豆肉汤颗粒
铝片
Natural Rubber Tubing, inner ? 3 mm, outer ? 9 mm, wall thickness ? 3 mm, red, for vacuum, temperature range -30°C+70°C Pack = 25 m
BOTTLES, 2000 ML, PP, CONICAL SHOULDER, WIDE- MOUTHED, TRANSPARENT, WITH SCREW-CAP
二叔戊酰甲烷
Graphpak 3D密封垫
四乙基氢氧化铵
SampliQ Si-SAX SPE小柱
二甲氧基(甲基)苯基硅烷