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

577–600 of 1,435 products

Ethanol absolute, ACS, AR, for HPLC 99.9%

CAS: 64-17-5
Formula: C₂H₆O
MW: 46.07 g/mol

ZX-019625

Ethanol, AR

CAS: 64-17-5
Formula: C₂H₆O
MW: 46.07 g/mol

ZX-018845

Ethanolamine, GR 99%+

CAS: 141-43-5
Formula: C₂H₇NO
MW: 61.08 g/mol

ZX-008491

Ethidium bromide, GR 99%

CAS: 1239-45-8
Formula: C₂₁H₂₀BrN₃
MW: 394.3 g/mol

ZX-003329

Ethidium chloride, GR 98%+

CAS: 602-52-8
Formula: C₂₁H₂₀ClN₃
MW: 349.9 g/mol

ZX-011153

Ethyl acetate, AR, specially dried ≥99.90%

CAS: 141-78-6
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-037225

Ethyl acetate, puriss GR 99%+

CAS: 141-78-6
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-001795

Ethyl aceto acetate, GR 99%+

CAS: 141-97-9
Formula: C₆H₁₀O₃
MW: 130.14 g/mol

ZX-001796

Ethyl methyl ketone, EP, AR

CAS: 78-93-3
Formula: C₄H₈O
MW: 72.11 g/mol

ZX-038583

Ethyl methyl ketone, GR 99%+

CAS: 78-93-3
Formula: C₄H₈O
MW: 72.11 g/mol

ZX-001797

Ethylal, AR

CAS: 462-95-3
Formula: C₅H₁₂O₂
MW: 104.15 g/mol

ZX-038614

Ethylene glycol, GR 99%+

CAS: 107-21-1
Formula: C₂H₆O₂
MW: 62.07 g/mol

ZX-001798

Ethylenediamine dihydrochloride, AR

CAS: 333-18-6
Formula: C₂H₁₀Cl₂N₂
MW: 133.02 g/mol

ZX-038339

Ethylenediamine, GR 99%+

CAS: 107-15-3
Formula: C₂H₈N₂
MW: 60.1 g/mol

ZX-008495

Ethylenediaminetetraacetic acid dipotassium salt, 99%+

CAS: 25102-12-9
Formula: C₁₀H₁₈K₂N₂O₁₀
MW: 404.45 g/mol

ZX-000359

Ethylenediaminetetraacetic acid disodium magnesium salt, AR

CAS: 14402-88-1
Formula: C₁₀H₁₂MgN₂Na₂O₈
MW: 358.5 g/mol

ZX-038161

Ethylenediaminetetraacetic acid magnesium salt, GR 98%+

CAS: 12312-36-6
Formula: C₁₀H₁₆MgN₂O₈⁺2
MW: 316.55 g/mol

ZX-007540

Ethylenediaminetetraacetic acid tri potassium salt, dihydrate, AR ≥99.00%

CAS: 65501-24-8
Formula: C₁₀H₁₇K₃N₂O₁₀
MW: 442.54 g/mol

ZX-038469

Ethylenediaminetetraacetic acid, GR 99%+

CAS: 60-00-4
Formula: C₁₀H₁₆N₂O₈
MW: 292.24 g/mol

ZX-007542

Ethylenediaminetetraacetic acid, IP/BP/USP/EP/Ph. Eur., AR

CAS: 60-00-4
Formula: C₁₀H₁₆N₂O₈
MW: 292.24 g/mol

ZX-038625

Europium oxide nanopowder, APS 45-58 nm, AR ≥99.9%

CAS: 1308-96-9
Formula: Eu₂O₃
MW: 351.93 g/mol

ZX-037067

Ferric chloride, GR 99%+

CAS: 7705-08-0
Formula: Cl₃Fe
MW: 162.2 g/mol

ZX-013718

Ferric chloride, hexahydrate, GR 99%+

CAS: 10025-77-1
Formula: Cl₃FeH₁₂O₆
MW: 270.29 g/mol

ZX-013720

Ferric nitrate, GR 98%+

CAS: 7782-61-8
Formula: FeH₁₈N₃O₁₈
MW: 404 g/mol

ZX-013725

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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