Can AR grade be used to standardise a volumetric solution?

AR grade is fine for preparing volumetric solutions that you then standardise. To standardise them, use a primary standard material such as potassium hydrogen phthalate or sodium carbonate of certified purity, rather than relying on the AR assay alone.

Why do AR limits differ between suppliers?

Because AR is defined by each manufacturer rather than a public compendium. Two AR products may share an assay but list different impurities or limits. If a specific impurity matters to your method, check that it is named on the COA.

Is AR grade suitable for trace metal analysis?

Not usually. AR limits for metals are in ppm, while ICP-MS work needs ppb or ppt levels. For trace metal digestion and standards, choose a grade specified for trace analysis or an electronic grade acid.

Chemical grade

AR Grade (Analytical Reagent) chemicals

High-purity reagents with a minimum assay and named maximum limits for individual impurities, made for quantitative analysis.

1,435 products in this grade

AR Grade (Analytical Reagent) products

649–672 of 1,435 products

HABA, GR 98%

CAS: 1634-82-8
Formula: C₁₃H₁₀N₂O₃
MW: 242.23 g/mol

ZX-008926

Hafnium oxide nanopowder, APS 100-200 nm, AR

CAS: 12055-23-1
Formula: HfO₂
MW: 210.48 g/mol

ZX-038061

Half wave plate (Diameter: 12.7mm, Coating: AR/ AR, R<0.25%@1064nm)

ZX-017240

Half wave plate (Diameter: 12.7mm, Coating: AR/ AR, R<0.25%@532nm)

ZX-017241

Half wave plate (Diameter: 12.7mm, Coating: AR/ AR, R<0.25%@633nm)

ZX-017242

Half wave plate (Diameter: 12.7mm, Coating: AR/ AR, R<0.25%@808nm)

ZX-017243

HATU, AR

CAS: 148893-10-1
Formula: C₁₀H₁₅F₆N₆OP
MW: 380.23 g/mol

ZX-038166

Hematoxylin powder, AR, for microscopy

CAS: 517-28-2
Formula: C₁₆H₁₄O₆
MW: 302.28 g/mol

ZX-038387

Hemicellulase, AR

CAS: 9025-56-3

ZX-038003

Hexachlorobenzene, crystalline

CAS: 118-74-1
Formula: C₆Cl₆
MW: 284.8 g/mol

ZX-000060

Hexachloroplatinic acid, GR

CAS: 18497-13-7
Formula: H₂PtCl_6.6H₂O
MW: 517.9 g/mol

ZX-014448

Hexafluorophosphoric acid, AR

CAS: 16940-81-1
Formula: F₆HP
MW: 145.97 g/mol

ZX-037932

Hexamine, GR 99%+

CAS: 100-97-0
Formula: C₆H₁₂N₄
MW: 140.19 g/mol

ZX-008502

Hexane, fraction, AR, for GC >95%

CAS: 110-54-3
Formula: C₆H₁₄
MW: 86.18 g/mol

ZX-037384

Hexane, fraction, AR, specially dried ≥99.00%

CAS: 110-54-3
Formula: C₆H₁₄
MW: 86.18 g/mol

ZX-038497

Hexane, fraction, GR

CAS: 110-54-3
Formula: C₆H₁₄
MW: 86.18 g/mol

ZX-001801

Holmium oxide, GR 99.99%

CAS: 12055-62-8
Formula: Ho₂O₃
MW: 377.86 g/mol

ZX-014550

Homatropine hydrobromide, GR 99%

CAS: 51-56-9
Formula: C₁₆H₂₂BrNO₃
MW: 356.25 g/mol

ZX-003345

Hydrazine dihydrochloride, AR

CAS: 5341-61-7
Formula: Cl₂H₆N₂
MW: 104.96 g/mol

ZX-038167

Hydrazine hydrate, AR 80%

CAS: 7803-57-8
Formula: H₆N₂O
MW: 50.06 g/mol

ZX-037064

Hydrazine hydrate, GR 80%

CAS: 10217-52-4
Formula: H₆N₂O
MW: 50.06 g/mol

ZX-015067

Hydrazine hydrate, GR 99%

CAS: 10217-52-4
Formula: H₆N₂O
MW: 50.06 g/mol

ZX-015068

Hydrazine sulphate, GR 99%+

CAS: 10034-93-2
Formula: H₆N₂O₄S
MW: 130.13 g/mol

ZX-015070

Hydriodic acid, GR 55% min

CAS: 10034-85-2
Formula: HI
MW: 127.91 g/mol

ZX-000858

Compare with other grades

HPLC Grade GC Grade ACS Grade LR Grade (Laboratory Reagent)Extra Pure Grade Molecular Biology Grade Spectroscopy Grade LC-MS Grade IP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)Ph. Eur. Grade (European Pharmacopoeia)Food Grade (FCC)Technical Grade Electronic Grade Deuterated and Stable-Isotope-Labelled Compounds Pharmaceutical Secondary Reference Standards Grades guide

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