优瓦十水四硼酸钠(硼砂)分析对照品
优瓦十水四硼酸钠(硼砂)分析对照品广州优瓦仪器有限公司4000-868-328 专注进口标准品优瓦十水四硼酸钠(硼砂)分析对照品十水四硼酸钠(硼砂) Sodium Tetraborate (Borax), pH NIST 30 g酒石酸氢钾 Potassium Hydrogen Tartrate, pH NIST 60 g四草酸钾 Potassium Tetroxalate Dihydrate pH Standard NIST 65 gpH值标准 pH Standards, (set of 191d-I + 191d-II) NIST 1 bottle x25g;1bottlex30g硝酸钾 Potassium Nitrate(需清关) NIST 90 g硅铁高纯硅级 Ferrosilicon (75% Si-HP Grade)(需清关) NIST 75 g低碳铬铁 Ferrochromium, Low Carbon NIST 100 g硅砖(C22) Silica Brick NIST 45 g硅砖(C23) Silica Brick NIST 45 g磷酸二氢钾 Potassium Dihydrogen Phosphate, (KH2PO4) NIST 90 g甲苯 Toluene Liquid Density(需清关) NIST 4x5 mL钨精 Tungsten Concentrate NIST 100 g黑曜石岩 Obsidian Rock NIST 35 g优瓦十水四硼酸钠(硼砂)分析对照品
页:
[1]