VISOCOLOR® ECO Hydrazine 德国MN肼测试剂/补充试剂931030/931230 Colorimetric determination of Hydrazine DIN method: In acidic solution hydrazine reacts with 4-dimethylaminobenzaldehyde to form a yellow/orange coloured compound. …

VISOCOLOR® ECO Chlorine dioxide 德国MN二氧化氯测试剂/补充试剂931021/931221 Colorimetric determination of chlorine dioxide in drinking water, reservoirs and disinfectant solutions At a pH value of 5-6 chlorine dioxide reacts with N,N-diethyl-1…

VISOCOLOR® ECO Zinc 德国MN锌测试剂/补充试剂931098/931298 Colorimetric determination of zinc At a pH of 8.5 – 9.5 zinc ions react with zincon to form a blue colour complex. Acidic, alkaline and buffered samples have to be adjusted to …

VISOCOLOR® ECO Hardness (total) 德国MN总硬度测试剂hardness/931029/931929 Titrimetric determination of total hardness Complexometric titration in accordance with DIN 38406 E3 and DIN 38409 H6. Copper(II) ions can delay or (in…

VISOCOLOR® ECO Chlorine 6, free + total 德国Mn总氯/自由氯测试剂931217 Photometric determination of free and total chlorine At a pH value of 5 - 6 free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) to form a red-violet dye. I…

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…