VISOCOLOR® ECO Swimming pool 游泳池PH/氯水质测试剂/德国MN931090/931290 Colorimetric determination of chlorine and pH-value Free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) to form a red-violet dye. The pH value is determine…

VISOCOLOR® ECO Swimming pool 游泳池PH/氯水质测试剂/德国MN931090/931290 Colorimetric determination of chlorine and pH-value Free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) to form a red-violet dye. The pH value is determine…

VISOCOLOR® ECO Oxygen 德国MN氧化物测试剂/补充试剂931088/931288 Colorimetric determination of oxygen Oxygen determination according to Winkler: in alkaline solution dissolved oxygen oxidises manganese(II) ions to higher-valent manganese hydro…

VISOCOLOR® ECO Fluoride 德国MN氟化物测试剂Fluoride/931227 Photometric determination of fluoride Photometric determination of fluoride with 1,8-dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid (SPADNS) with the photometer PF-…

VISOCOLOR® ECO Chloride 德国MN氯化物测试剂/补充试剂931018/931218 Colorimetric determination of chloride Chloride ions react with mercuric thiocyanate to produce undissociated mercuric chloride and to liberate thiocyanate ions. In the presenc…

VISOCOLOR® ECO Sulphite 德国MN亚硫酸盐测试剂Sulphite/滴定法931095 Titrimetric determination of Sulphite Titrimetric determination with addition of iodine solution and reverse titration of unused iodine with sodium thiosulphate. …

VISOCOLOR® ECO Nitrite 德国MN亚硝酸测试剂/补充试剂931044/931244 Colorimetric determination of nitrite In acidic solution sulphanilic acid or sulphanilamide are diazotised with nitrite. The diazonium salt is then coupled with an aromatic amin…

VISOCOLOR® ECO DEHA 德国MN DEHA测试剂/补充试剂931024/931224 Colorimetric determination of DEHA Measurement of the reduction properties of DEHA for iron(III) ions and determination of the iron(II) ions formed. …

VISOCOLOR® ECO Carbonate hardness 德国MN碳酸盐硬度测试剂931014 Titrimetric determination of carbonate hardness The determination is preformed as titration with hydrochloric acid against a mixed indicator, which changes colour at pH 4.5. (R…

VISOCOLOR® ECO Sulphide 德国MN硫化物测试剂/补充试剂931094/931294 Colorimetric determination of Sulphide N,N-Dimethyl-1,4-phenylene diamine reacts with hydrogen sulphide to form an unstable compound which rearranges to leucomethylene blue. Ox…