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

865–888 of 1,435 products

MTT tetrazolium, 99%+

CAS: 298-93-1
Formula: C₁₈H₁₆BrN₅S
MW: 414.3 g/mol

ZX-000637

Myristic acid, AR, for GC 99.5%

CAS: 544-63-8
Formula: C₁₄H₂₈O₂
MW: 228.37 g/mol

ZX-037291

N-(1-Naphthyl)ethylenediamine dihydrochloride, GR 99%+

CAS: 1465-25-4
Formula: C₁₂H₁₆Cl₂N₂
MW: 259.17 g/mol

ZX-008544

N-Benzoyl-N-phenylhydroxylamine, GR 98%+

CAS: 304-88-1
Formula: C₁₃H₁₁NO₂
MW: 213.23 g/mol

ZX-008946

n-Bromosuccinimide, GR 99%

CAS: 128-08-5
Formula: C₄H₄BrNO₂
MW: 177.98 g/mol

ZX-000907

n-Butylamine, GR 99%+

CAS: 109-73-9
Formula: C₄H₁₁N
MW: 73.14 g/mol

ZX-008552

n-Butyric acid, GR 99%+

CAS: 107-92-6
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-018339

n-Cetyl n,n,n,tri methyl ammonium bromide, GR 99%+

CAS: 57-09-0
Formula: C₁₉H₄₂BrN
MW: 364.4 g/mol

ZX-001357

n-Heptane, EP, AR 99%

CAS: 142-82-5
Formula: C₇H₁₆
MW: 100.2 g/mol

ZX-038652

n-Heptane, GR 99%+

CAS: 142-82-5
Formula: C₇H₁₆
MW: 100.2 g/mol

ZX-001813

n-Hexadecane sulphonic acid sodium salt anhydrous, AR, for HPLC

CAS: 15015-81-3
Formula: C₁₆H₃₃NaO₃S
MW: 328.5 g/mol

ZX-038126

n-Hexane, GR 99%+

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

ZX-001814

n-Iodosuccinimide, AR 95%

CAS: 516-12-1
Formula: C₄H₄INO₂
MW: 224.98 g/mol

ZX-037637

n-Methyl aniline, GR 99%+

CAS: 100-61-8
Formula: C₇H₉N
MW: 107.15 g/mol

ZX-008561

n-Octane, AR, for GC >99.5%

CAS: 111-65-9
Formula: C₈H₁₈
MW: 114.23 g/mol

ZX-037316

n-Octane, GR 99%+

CAS: 111-65-9
Formula: C₈H₁₈
MW: 114.23 g/mol

ZX-001815

n-Phenylsemicarbazide, 99%+

CAS: 103-03-7
Formula: C₇H₉N₃O
MW: 151.17 g/mol

ZX-008952

n-Undecane, AR, for GC >99%

CAS: 1120-21-4
Formula: C₁₁H₂₄
MW: 156.31 g/mol

ZX-037420

n-Undecane, GR 99%

CAS: 1120-21-4
Formula: C₁₁H₂₄
MW: 156.31 g/mol

ZX-003858

N,N-Diethyl-p-phenylenediamine sulphate salt, GR 99%+

CAS: 6283-63-2
Formula: C₁₀H₁₈N₂O₄S
MW: 262.33 g/mol

ZX-008532

N,N-Diethylaniline, GR

CAS: 91-66-7
Formula: C₁₀H₁₅N
MW: 149.23 g/mol

ZX-008534

N,N-Dimethyl-p-phenylenediamine dihydrochloride, GR 99.5%

CAS: 536-46-9
Formula: C₈H₁₄Cl₂N₂
MW: 209.11 g/mol

ZX-000643

N,N-Dimethylacetamide, AR, specially dried ≥99.5%

CAS: 127-19-5
Formula: C₄H₉NO
MW: 87.12 g/mol

ZX-037229

N,N-Dimethylacetamide, GR 99%+

CAS: 127-19-5
Formula: C₄H₉NO
MW: 87.12 g/mol

ZX-001810

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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