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  供应产品
碳酸氢钠/碳酸钠 certified secondary standard reference material for pH measurement; directly traceable to p 面议0询价
四草酸钾 certified secondary standard reference material for pH measurement; directly traceable to prima 面议0询价
磷酸二氢钾, 磷酸氢二钠 certified secondary standard reference material for pH measurement; directly traceable 面议0询价
缓冲剂 (Boric acid, Sodium hydroxide, Potassium chloride) tracable to SRM from NIST and PTB pH 11.00 (2 面议0询价
缓冲剂 (Disodium tetraborate), tracable to SRM from NIST and PTB pH 9.18 (25°C) CertiPUR® 面议0询价
缓冲剂 (Citric acid, Sodium hydroxide, Hydrogen chloride), tracable to SRM from NIST and PTB pH 2.00 (2 面议0询价
缓冲液 traceable to SRM from NIST and PTB 10 x pH 4.01 (phthalate)m 10 x pH 7.00 (phosphate) 10 x pH 10 面议0询价
缓冲液 traceable to SRM from NIST and PTB 10 x pH 4.01 (phthalate), 10 x pH 7.00 (phosphate), 10 pH 9.0 面议0询价
缓冲液 (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 10.00 (2 面议0询价
缓冲液 (boric acid/potassium chloride/sodium hydroxide solution), traceable to SRM from NIST and PTB pH 面议0询价
缓冲液 (potassium dihydrogen phosphate/di-sodium hydrogen phosphate), traceable to SRM from NIST and PT 面议0询价
缓冲液 (potassium hydrogen phthalate), traceable to SRM from NIST and PTB pH 4.01 (25°C) CertiPUR® 面议0询价
电导度液标准品 0.147 mS/cm certified reference material for the measurement of electrolytic conductivity, t 面议0询价
氯化钾溶液(标称 12.8 mS/cm) 有证电导率测量标准物质，可追溯至PTB和NIST (c=0.1 mol/l) CertiPUR® 面议0询价
电导度液标准品 1.41 mS/cm certified reference material for the measurement of electrolytic conductivity, tr 面议0询价
缓冲剂 (Disodium hydrogen phosphate/Sodium hydroxide) traceable to SRM from NIST und PTB pH 12.00 (25°C 面议0询价
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