Water Testing Solutions and Reagents

Murexide, ACROS Organics™

Chemical Name or Material: Murexide CAS: 3051-09-0 Purity Grade: ACS Reagent Grade Molecular Formula: C8H8N6O6 Formula Weight: 284.19 MDL Number: MFCD00012777

Murexide Products for Science Education

Chemical Name or Material: Murexide CAS: 3051-09-0 Assay Percent Range: 100% w/v Linear Formula: C8H8N6O6 Formula Weight: 284.09 Synonym: Ammonium Pupurate Acid

Platinum Cobalt Color Standard Solution (APHA), Fisher Chemical

Chemical Name or Material: Platinum Cobalt Color Standard Solution CAS: 7647-01-0 CAS: 7791-13-1 CAS: 16921-30-5 CAS: 7732-18-5 MDL Number: MFCD00214189

Buffer Solution (For Water Hardness (Schwarzenback)/Certified; APHA Standard), Fisher Chemical

Chemical Name or Material: Buffer Solution Name Note: For Water Hardness (Schwarzenback) CAS: 1336-21-6 CAS: 12125-02-9 CAS: 6381-92-6 CAS: 7791-18-6 CAS: 7732-18-5 Purity Grade: Certified APHA Standard MDL Number: MFCD00146206

o-Tolidine Dihydrochloride Solution (0.1% w/v), Fisher Chemical

Chemical Name or Material: o-Tolidine Dihydrochloride Solution Name Note: 0.1% (w/v) CAS: 7647-01-0 CAS: 612-82-8 CAS: 7732-18-5 MDL Number: MFCD00012960

Manganese (II) Sulfate Solution (APHA), Fisher Chemical

Chemical Name or Material: Manganese (II) Sulfate Solution Name Note: Conforms to the standards of APHA CAS: 7785-87-7 CAS: 7732-18-5 MDL Number: MFCD00149159

Eriochrome Black T Products for Science Education

Chemical Name or Material: Eriochrome Black T CAS: 1787-61-7 Assay Percent Range: >95% w/v Linear Formula: C20H12N3O7SNa Formula Weight: 461.38 Synonym: Ebt

Murexide (Indicator Tablets), Fisher Chemical

Chemical Name or Material: Murexide CAS: 3051-09-0 CAS: 7447-40-7 Physical Form: Solid Molecular Formula: C8H8N6O6 Formula Weight: 284.19 MDL Number: MFCD00012777 Synonym: Ammonium Purpurate Acid

Magnesium Sulfate Solution (2.25%/APHA), Fisher Chemical

Chemical Name or Material: Magnesium Sulfate Heptahydrate Solution, 2.25% CAS: 7487-88-9 CAS: 7732-18-5 Purity Grade: APHA Molecular Formula: MgSO4 MDL Number: MFCD00011110

Buffer Solution (Phosphate), pH 7.20 (APHA), Fisher Chemical

Chemical Name or Material: Buffer Solution (Phosphate), pH 7.21 CAS: 7758-11-4 CAS: 7558-79-4 CAS: 7778-77-0 CAS: 12125-02-9 CAS: 7732-18-5 MDL Number: MFCD00081857

Alkaline Iodide-Sodium Azide Solution, Fisher Chemical

Chemical Name or Material: Alkaline Iodide–Sodium Azide Solution CAS: 1310-58-3 CAS: 7681-11-0 CAS: 26628-22-8 CAS: 7732-18-5 MDL Number: MFCD00145755

Nessler's Reagent Solution, Fisher Chemical

Chemical Name or Material: Nessler«s Reagent Solution CAS: 7681-11-0 Physical Form: Liquid MDL Number: MFCD00049656 Synonym: Mercuric and potassium iodide solution

Silver Nitrate Solution (1mL=1mg NaCl/Certified APHA), Fisher Chemical

Chemical Name or Material: Silver Nitrate Solution Name Note: 0.017N CAS: 7761-88-8 CAS: 7732-18-5 Purity Grade: Certified APHA Molecular Formula: AgNO3 · H2O MDL Number: MFCD00003414 Synonym: Nitric Acid Silver (1+) Salt

Murexide (Powder), Fisher Chemical Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Murexide CAS: 3051-09-0 Physical Form: Solid Molecular Formula: C8H8N6O6 Formula Weight: 284.2 MDL Number: MFCD00012777 Synonym: Ammonium Purpurate Acid

Silver Nitrate Solution (1mL=0.5mg Cl/Certified APHA), Fisher Chemical

Chemical Name or Material: Silver Nitrate Solution Name Note: 0.0141N CAS: 7761-88-8 CAS: 7732-18-5 Purity Grade: Certified APHA MDL Number: MFCD00003414 Synonym: Nitric Acid Silver (1+) Salt

Potassium Chromate Solution, 5% (w/v)/APHA, Fisher Chemical

Chemical Name or Material: Potassium Chromate Solution Name Note: 5% (w/v) CAS: 7789-00-6 CAS: 7761-88-8 CAS: 7732-18-5 Assay: 4.5 to 5.5% Assay Percent Range: 5% w/v Molecular Formula: K2CrO4 Formula Weight: 194.19 MDL Number: MFCD00011368 Synonym: Neutral Potassium Chromate

PAN (Certified), Fisher Chemical

Chemical Name or Material: PAN CAS: 85-85-8 Purity Grade: Certified Grade Molecular Formula: C15H11N3O Formula Weight: 249.27 MDL Number: MFCD00004071 Synonym: 1-(2-Pyridylazo)-2-naphthol

Sodium Carbonate, 0.02N, EPA for Alkalinity, Ricca Chemical

Chemical Name or Material: Sodium Carbonate

Alkaline-Iodide Reagent, Winkler Formulation, for Dissolved Oxygen (DO) Analysis, Ricca Chemical

Chemical Name or Material: Alkaline-Iodide Reagent Name Note: Winkler Formulation CAS: 1310-73-2 CAS Min %: 46.0 CAS Max %: 48.0 CAS: 7732-18-5 CAS Min %: 45.51 CAS Max %: 47.37 CAS: 7681-11-0 CAS Min %: 6.83 CAS Max %: 7.11 Physical Form: Liquid

Potassium Acid Phthalate, (1000ppm COD), ASTM/EPA for COD, Ricca Chemical

Chemical Name or Material: Potassium Acid Phthalate

Synthetic Fresh Water, Hard, Ricca Chemical

Chemical Name or Material: Synthetic Fresh Water Name Note: Hard CAS: 7732-18-5 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 144-55-8 CAS Min %: 0.02 CAS Max %: 0.02 CAS: 10101-41-4 CAS Min %: 0.01 CAS Max %: 0.01 CAS: 7487-88-9 CAS Min %: 0.01 CAS Max %: 0.01 CAS: 7447-40-7 CAS Min %: 8.0E-4 CAS Max %: 8.0E-4 Physical Form: Liquid

Buffer Solution, for Water Hardness, ASTM Formulation, Ricca Chemical

Chemical Name or Material: Buffer Solution Name Note: ASTM Formulation CAS: 7732-18-5 CAS Min %: 91.0 CAS Max %: 95.0 CAS: 1303-96-4 CAS Min %: 3.66 CAS Max %: 3.81 CAS: 1310-73-2 CAS Min %: 0.92 CAS Max %: 0.95 CAS: 6381-59-5 CAS Min %: 0.92 CAS Max %: 0.95 CAS: 1313-84-4 CAS Min %: 0.92 CAS Max %: 0.95 CAS: 14402-88-1 CAS Min %: 0.09 CAS Max %: 0.1 Physical Form: Liquid

Barium Diphenylaminesulfonate, 0.1% (w/v) Aqueous Solution, Ricca Chemical

Chemical Name or Material: Barium Diphenylaminesulfonate CAS: 7732-18-5 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 1300-92-1 CAS Min %: 0.1 CAS Max %: 0.1 Physical Form: Liquid

Synthetic Fresh Water, Very Hard, Ricca Chemical

Chemical Name or Material: Synthetic Fresh Water Name Note: Very Hard CAS: 7732-18-5 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 144-55-8 CAS Min %: 0.04 CAS Max %: 0.04 CAS: 10101-41-4 CAS Min %: 0.02 CAS Max %: 0.02 CAS: 7487-88-9 CAS Min %: 0.02 CAS Max %: 0.02 CAS: 7447-40-7 CAS Min %: 0.0015 CAS Max %: 0.0015 Physical Form: Liquid

Sodium Thiosulfate, 0.0394N, Ricca Chemical

Chemical Name or Material: Sodium Thiosulfate CAS: 7732-18-5 CAS Min %: 97.0 CAS Max %: 100.0 CAS: 10102-17-7 CAS Min %: 0.77 CAS Max %: 0.8 CAS: 497-19-8 CAS Min %: 0.01 CAS Max %: 0.01

Silver Nitrate, 0.141N, 1mL = 5mg Cl-, ASTM for Chloride, Ricca Chemical

Chemical Name or Material: Silver Nitrate Name Note: 0.141N CAS: 7732-18-5 CAS Min %: 96.0 CAS Max %: 100.0 CAS: 7761-88-8 CAS Min %: 2.3 CAS Max %: 2.39

Alkaline-Iodide-Azide, Alsterberg Formulation, for Dissolved Oxygen (DO) Analysis, Ricca Chemical

Chemical Name or Material: Alkaline-Iodide-Azide Name Note: Alsterberg Formulation CAS: 7732-18-5 CAS Min %: 46.0 CAS Max %: 48.0 CAS: 1310-73-2 CAS Min %: 44.62 CAS Max %: 46.44 CAS: 7681-11-0 CAS Min %: 6.68 CAS Max %: 6.95 CAS: 26628-22-8 CAS Min %: 0.45 CAS Max %: 0.46 Physical Form: Liquid

Water Hardness Buffer, with Magnesium EDTA, APHA/ASTM/EPA for Water Hardness, Ricca Chemical

Chemical Name or Material: Water Hardness Buffer Name Note: With Magnesium EDTA

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