LabChem

Boric Acid, 2% w/v w/Indicator (Methylene Blue-Methyl Red) for Nitrogen(Ammonia)

Ferrous Ammonium Sulfate Titrant, 0.00282N(0.00282M) for Chlorine, Chlorine Dioxide (1mL=0.1mg Cl)

Nitrite (as Nitrogen) Standard, 1000 ppm, Preserved w/ Chloroform (1mL = 1mg N, 1mL = 3.28mg NO_)

Nitrate (as Nitrogen) Standard, 1000 ppm, Preserved w/ Chloroform (1mL = 1mg N, 1mL = 4.43mg NO__)

Alkaline Iodide Azide Solution I, for Dissolved Oxygen (Saturated & Less than Saturated Samples)

Alkaline Iodide Azide Solution II, for Dissolved Oxygen (Concentrations Greater than 15mg/L)

Carbon Standard, 1000ppm, Inorganic (1mL = 1mg C), (Sodium Carbonate-Sodium Bicarbonate)

m-Cresol Purple, 0.1% Aqueous, pH 1.2 - 2.8 Red to Yellow, pH 7.4 - 9.0 Yellow to Purple

Methyl Red-Methylene Blue, Mixed Indicator, for Nitrogen (Ammonia), Nitrogen (Organic)

Cresol Red, 0.04% Aqueous, pH 0.2 - 1.8 Red to Yellow, pH 7.2 - 8.8 Yellow to Purple

Color Reagent for Nitrogen (Nitrate), for Automated Cadmium Reduction Method

Potassium Chloride, 4M (4N), Electrode Filling Solution, Saturated with AgCl

N-(1-Naphthyl)-Ethylenediamine Dihydrochloride, 0.1%, for Nitrogen (Nitrite)

Nitrite (as Nitrogen) Standard, 1000 ppm, (1mL = 1mg N, 1mL = 3.28mg NO__ )

Nitrate (as Nitrogen) Standard, 1000 ppm, (1mL = 1mg N, 1mL = 4.43mg NO__)

COD Standard, 1000ppm (1mL = 1mg COD) (Potassium Acid Phthalate in Water)