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双（三苯基膦） 二溴化钴
甲醇中甲氧基肉桂酸乙基己酯溶液标准物质
PP 样品瓶
嗜冷菌计数琼脂
pH indicator paper, fix, pH 0-14, strips 6 x 85 mm, cannot bleed to the sample Case = 100 pcs.
O-rings,made of silicone, PTFE coated DN 100
6-氯靛红
螺纹 10MM 聚四氟乙烯 0.010 用于
Flat sealing ring, black EPDM, 6.5 x78 x 1.5 mm for GLS 80 connection system and GLS 80 stirred reactor
