Hardness (APHA 2340C, EPA 130)

Ammonium Hydroxide, 1.00 Normal

CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.046 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: azanium;hydroxide SMILES: [NH4+].[OH-]

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

CAS: 7647-01-0 Molecular Formula: ClH Molecular Weight (g/mol): 36.458 InChI Key: VEXZGXHMUGYJMC-UHFFFAOYSA-N PubChem CID: 313 ChEBI: CHEBI:17883 IUPAC Name: chlorane SMILES: Cl

Calcium Chloride Standard, 400ppm Ca, Ricca Chemical

CAS: 471-34-1 Molecular Formula: CCaO3 Molecular Weight (g/mol): 100.086 InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L PubChem CID: 10112 ChEBI: CHEBI:3311 IUPAC Name: calcium;carbonate SMILES: C(=O)([O-])[O-].[Ca+2]

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness

Accurate test kits for routine water analysis

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

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: Caustic Soda PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

EDTA Titrant, 0.0100 Molar, Ricca Chemical

CAS: 6381-92-6 Molecular Formula: C20H36N4Na4O20 Molecular Weight (g/mol): 744.475 InChI Key: FRZUTFDDWKMHHN-UHFFFAOYSA-J PubChem CID: 131664146 IUPAC Name: tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;tetrahydrate SMILES: C(CN(CC(=O)O)CC(=O)O)N(CC(=O)O)CC(=O)O.C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].O.O.O.O.[Na+].[Na+].[Na+].[Na+]

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.

CAS: 471-34-1 Molecular Formula: CCaO3 Molecular Weight (g/mol): 100.086 InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L PubChem CID: 10112 ChEBI: CHEBI:3311 IUPAC Name: calcium;carbonate SMILES: C(=O)([O-])[O-].[Ca+2]

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

CAS: 3147-14-6 Molecular Formula: C17H14N2O5S Molecular Weight (g/mol): 358.368 InChI Key: ASFVMSDYPYMUFL-UHFFFAOYSA-N PubChem CID: 6364506 IUPAC Name: 4-[(2-hydroxy-5-methylphenyl)hydrazinylidene]-3-oxonaphthalene-1-sulfonic acid SMILES: CC1=CC(=C(C=C1)O)NN=C2C3=CC=CC=C3C(=CC2=O)S(=O)(=O)O

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

CAS: 14402-88-1 Molecular Formula: C10H12MgN2Na2O8 Molecular Weight (g/mol): 358.497 InChI Key: AWNVVAMWLMUZOZ-UHFFFAOYSA-J PubChem CID: 161064 IUPAC Name: magnesium;disodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate SMILES: C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].[Na+].[Na+].[Mg+2]

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness HR

Accurate test kit for routine water analysis

Lovibond™ CHECKIT™ Comparator Test Kits: Total Hardness LR

Accurate test kits for routine water analysis

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

CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium;chloride SMILES: [Na+].[Cl-]

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

CAS: 109-86-4 Molecular Formula: C3H8O2 Molecular Weight (g/mol): 76.095 InChI Key: XNWFRZJHXBZDAG-UHFFFAOYSA-N PubChem CID: 8019 ChEBI: CHEBI:46790 IUPAC Name: 2-methoxyethanol SMILES: COCCO

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