Water Testing Solutions and Reagents

Copper (II) Sulfate-Sulfamic Acid Inhibitor Solution (APHA), Fisher Chemical

Chemical Name or Material: Copper (II) Sulfate–Sulfamic Acid Inhibitor Solution CAS: 7758-99-8 CAS: 5329-14-6 CAS: 64-19-7 CAS: 7732-18-5 Purity Grade: APHA MDL Number: MFCD00149681 Synonym: Copper (II) Sulfate–Sulfamic Acid Inhibitor Solution

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

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: 284.09g/mol Synonym: Ammonium Pupurate Acid

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

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: 284.20g/mol MDL Number: MFCD00012777 Synonym: Ammonium Purpurate Acid

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: 194.19g/mol MDL Number: MFCD00011368 Synonym: Neutral Potassium Chromate

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: 284.19g/mol MDL Number: MFCD00012777 Synonym: Ammonium Purpurate Acid

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

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

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

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

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: 461.38g/mol Synonym: Ebt

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

PAN (Certified), Fisher Chemical

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

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

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

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

Copper Sulfate (EPA Specifications), Ricca Chemical

Chemical Name or Material: COPPER SULFATE Purity Grade: EPA Specifications

Mercuric Nitrate, 0.141N (1mL = 5mg Cl), APHA/EPA for Chloride, Ricca Chemical

Chemical Name or Material: Mercuric Nitrate CAS: 7783-34-8 CAS: 7732-18-5

Manganous (Manganese) Sulfate, 0.003M, APHA for Ammonia Nitrogen, Ricca Chemical

Chemical Name or Material: Manganous (Manganese) Sulfate

Potassium Dichromate, 0.025N, ASTM/EPA, Ricca Chemical

Chemical Name or Material: Potassium Dichromate

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: Clear colorless 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: Clear, colorless to pale-yellow liquid

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: Clear colorless liquid

Ammonium Chloride, 1.15g/L, pH 7.20, for BOD, Ricca Chemical

Chemical Name or Material: Ammonium Chloride Name Note: pH 7.20, for BOD CAS: 7732-18-5 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 12125-02-9 CAS Min %: 0.11 CAS Max %: 0.12 Physical Form: Clear colorless liquid

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