Hardness (APHA 2340C, EPA 130)

Eriochrome™ Black T, Dry Form in NaCl, for Hardness, Certified, LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Eriochrome™ Black T CAS: 7647-14-5 CAS Max %: 99.5 CAS: 1787-61-7 CAS Max %: 0.5 Name Note: Dry Form in NaCl, for Hardness Purity Grade: Certified Grade Linear Formula: C20H12N3O7NaS

Hydrochloric Acid, 50% (v/v) Aqueous Solution, Ricca Chemical

Chemical Name or Material: Hydrochloric Acid CAS: 7647-01-0 CAS Min %: 49.0 CAS Max %: 51.0 CAS: 7732-18-5 CAS Min %: 49.0 CAS Max %: 51.0 Physical Form: Liquid

Eriochrome™ Black T, in Methoxyethanol, for Hardness, Certified, LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Eriochrome™ Black T CAS: 109-86-4 CAS Max %: 99.5 CAS: 1787-61-7 CAS Max %: 0.5 Name Note: in Methoxyethanol, for Hardness Purity Grade: Certified Grade Linear Formula: C20H12N3O7NaS UN Number: UN1188

Calcium Chloride Standard, 400ppm Ca, Ricca Chemical

Chemical Name or Material: Calcium Chloride Standard CAS: 471-34-1 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 7647-01-0 CAS Min %: 0.19 CAS Max %: 0.2 CAS: 7732-18-5 CAS Min %: 0.1 CAS Max %: 0.1

Ammonium Hydroxide, 1.00 Normal

Chemical Name or Material: Ammonium Hydroxide CAS: 1336-21-6 CAS Min %: 92.0 CAS Max %: 96.0 CAS: 7732-18-5 CAS Min %: 5.73 CAS Max %: 5.96 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

Sodium Hydroxide, Certified, 0.1000N ±0.0005N (0.1M), LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Sodium Hydroxide CAS: 1310-73-2 CAS Max %: 99.6 CAS: 7732-18-5 CAS Max %: 0.4 Purity Grade: Certified Grade Linear Formula: NaOH Synonym: Caustic Soda

EDTA Titrant, 0.0100 Molar, Ricca Chemical

Chemical Name or Material: EDTA Titrant CAS: 6381-92-6 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 7732-18-5 CAS Min %: 0.36 CAS Max %: 0.38 Physical Form: Liquid

Water Hardness Ind., APHA/EPA for Water Hardness, Ricca Chemical

Chemical Name or Material: Water Hardness Indicator

EDTA, Titrant for Water Hardness, (1mL=1mg CaCO3), 0.02N, LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: EDTA CAS: 6381-92-6 CAS Max %: 99.63 CAS: 7732-18-5 CAS Max %: 0.37 Name Note: Titrant for Water Hardness, (1mL = 1mg CaCO3) Purity Grade: Certified Grade Linear Formula: (HO2CCH2)2NCH2CH2N(CH2CO2Na)2·2H2O

Calmagite Indicator, 0.1% Aqueous, for Hardness, Certified, LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Calmagite Indicator CAS: 3147-14-6 CAS Max %: 99.9 CAS: 7732-18-5 CAS Max %: 0.1 Name Note: 0.1% Aqueous, for Hardness Purity Grade: Certified Grade Linear Formula: C17H14N2O5S

Calcium Carbonate Standard , (1mL = 1mg CaCO3 = 0.4mg Ca), for Hardness, Certified, 1.000 ±0.010mg CaCO3/mL, LabChem™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Calcium Carbonate Standard CAS: 471-34-1 CAS Max %: 98.9 CAS: 7647-01-0 CAS Max %: 1 CAS: 7732-18-5 CAS Max %: 0.1 Name Note: (1mL = 1mg CaCO3 = 0.4mg Ca), for Hardness Purity Grade: Certified Grade Linear Formula: CaCO3

Monomagnesium EDTA, 0.2g/L, for Hardness, Ricca Chemical

Chemical Name or Material: Monomagnesium EDTA CAS: 14402-88-1 CAS Min %: 98.0 CAS Max %: 100.0 CAS: 7732-18-5 CAS Min %: 0.02 CAS Max %: 0.02 Physical Form: Liquid

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness HR

Accurate test kit for routine water analysis

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness

Accurate test kits for routine water analysis

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness LR

Accurate test kits for routine water analysis

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