Pyrocatechol violet method - ISO 15923-2
Sodium dichloroisocyanurate, sodium salicylate and sodium nitroprusside method - ISO 15923-1
Sodium dichloroisocyanurate, sodium salicylate and sodium nitroprusside method - EPA 350.1
Alkaline Phenate method - SMWW 4500-NH3-G
Chloramin T, Phenol red method - SMWW 4500-Br-B
Azomethine-H method
Bromophenol Blue method
Alizarine fluorine blue and cerous nitrate method - ISO 15923-2
Alizarine fluorine blue and cerous nitrate method - SMWW 4500-F-E
Ammonium Acetate, acetyl acetone method
Antimony potassium tartrate, Ammonium molybdate and Ascorbic acid method - ISO 15923-1
Antimony potassium tartrate, Ammonium molybdate and Ascorbic acid method - SMWW 4500-P-F
Antimony potassium tartrate, Ammonium molybdate and Ascorbic acid method - EPA 365.1
4-(dimethylamino) benzaldehyde method
Arzenazo (III) method - ISO 15923-2
Calmagite method - ISO 15923-2
DPD method - EPA 330.2
DPD method - ISO 7393-2
Mercury (II) thiocyanate method - SMWW 4500-CI-E
Mercury (II) thiocyanate method - ISO 15923-1
Mercury (II) thiocyanate method - EPA 325.2
Hydrazine Sulphate reduction, Sulfanilamide, N-(1-Naphtyl)-ethlenediamine dihydrochloride method
Diphenylcarbazide method - ISO 15923-2
Diphenylcarbazide method - EPA 7196-A
Diphenylcarbazide method - SMWW 3500-Cr-B
Formaldoxime method - ISO 15923-2
Vanadium (III) reduction, Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - EPA 1 - reagent green method
Hydrazine Sulphate reduction, Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - ISO 15923-1
Hydrazine Sulphate reduction, Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - SMWW 4500-NO3-H
Enzymatic reduction, Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - EPA N07-0003
Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - ISO 15923-1
Sulfanilamide, N-(1-Naphtyl)-ethylenediamine dihydrochloride method - SMWW 4500-NO2-B
Alkaline ferricyanide and 4-aminopyridine method - EPA 420.4
Tetraphenyl borate method
1,10-Phenantroline method - ISO 15923-2
1,10-Phenantroline method - ISO 15923-2
dimethly-p-phenylenediamine method - DIN 38405-27
Ammonium molybdate and Ascorbic acid method - ISO 15923-1
Barium chloride, turbidimetric method - ISO 15923-1
Barium chloride, turbidimetric method - SMWW 4500-SO4-E
Chloramine-T and pyridine barbituric acid method - SMWW 4500-CN-E
Urease, Sodium dichloroisocyanurate, sodium salicylate and sodium nitroprusside method - ISO 15923-1
Platinum Cobalt method - EPA 110.2
Platinum Cobalt method - SMWW 2120 C
