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酒石酸氢钾 certified secondary standard reference material for pH measurement
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碳酸氢钠/碳酸钠 certified secondary standard reference material for pH measurement
Sodium hydrogen carbonate/sodium carbonate certified secondary standard reference material for pH
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邻-苯二甲酸氢钾 certified secondary standard reference material for pH measurement
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盐酸标准液配制在异丙醇溶液 acc. to DIN 51558 part 1 c(HCl) = 0.1 mol/l (0,1 N) TitriPUR®
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高效薄层层析板 25 Glass plates 20 x 10 cm for PAH determination acc. to DIN 38409-H13
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磷酸二氢钾, 磷酸氢二钠 certified secondary standard reference material for pH measurement
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硫酸硫酸银溶液 in sulfuric acid (D=1.84 g/ml) for COD determination acc. to DIN 38409-H 43-1
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0.1 N氢氧化钾溶于异丙醇标准溶液 acc. to DIN 51558 part 1 c(KOH)=0.1 mol/l (0,1 N) TitriPUR®
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硫酸硫酸汞溶液 in diluted sulfuric acid for determination of COD acc. to DIN 38409-H 43-1 (short-term experience)
Mercury(II) sulfate solution 200 g/l in diluted sulfuric acid for determination of COD acc. to DIN
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硅胶薄层层析板 含荧光指示剂 25 Glass plates 20 x 10 cm for AMD acc. to DIN 38407-F11
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