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

49–72 of 1,435 products

1,2-Dichlorobenzene, GR 99%+

CAS: 95-50-1
Formula: C₆H₄Cl₂
MW: 147 g/mol

ZX-001759

1,2-Dichloroethane, GR 99%+

CAS: 107-06-2
Formula: C₂H₄Cl₂
MW: 98.96 g/mol

ZX-001760

1,2-Dimethoxyethane anhydrous, AR >99%

CAS: 110-71-4
Formula: C₄H₁₀O₂
MW: 90.12 g/mol

ZX-037364

1,2-Dimethoxyethane, AR, specially dried ≥99.50%

CAS: 110-71-4
Formula: C₄H₁₀O₂
MW: 90.12 g/mol

ZX-038533

1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+

CAS: 521-24-4
Formula: C₁₀H₅NaO₅S
MW: 260.2 g/mol

ZX-009798

1,2,3-Trichlorobenzene, AR 99%

CAS: 87-61-6
Formula: C₆H₃Cl₃
MW: 181.4 g/mol

ZX-037784

1,2,4-Trichlorobenzene, AR >99%

CAS: 120-82-1
Formula: C₆H₃Cl₃
MW: 181.4 g/mol

ZX-037406

1,3 Dioxolane, AR 99%

CAS: 646-06-0
Formula: C₃H₆O₂
MW: 74.08 g/mol

ZX-037026

1,4-Butanediol, AR

CAS: 110-63-4
Formula: C₄H₁₀O₂
MW: 90.12 g/mol

ZX-037785

1,4-Dioxan, AR, specially dried ≥99.5%

CAS: 123-91-1
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-036987

1,4-Dioxan, EP, AR

CAS: 123-91-1
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-038536

1,4-Dioxan, GR 99%+

CAS: 123-91-1
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-001761

1,4,8,11-Tetraazacyclotetradecane, AR

CAS: 295-37-4
Formula: C₁₀H₂₄N₄
MW: 200.32 g/mol

ZX-038082

11-Bromo undecanoic acid, AR >99%

CAS: 2834-05-1
Formula: C₁₁H₂₁BrO₂
MW: 265.19 g/mol

ZX-018989

1R,3R,AR-Deltamethrin

CAS: 55700-99-7
Formula: C₂₂H₁₉Br₂NO₃
MW: 505.2 g/mol

ZX-042812

2-Amino 2-methyl 1-propanol, GR 96%

CAS: 124-68-5
Formula: C₄H₁₁NO
MW: 89.14 g/mol

ZX-003044

2-Amino-2-methyl-1,3-propanediol, GR 99%

CAS: 115-69-5
Formula: C₄H₁₁NO₂
MW: 105.14 g/mol

ZX-003046

2-Amino-benzothiazole, AR >99%

CAS: 136-95-8
Formula: C₇H₆N₂S
MW: 150.2 g/mol

ZX-037293

2-Butoxyethanol, puriss GR 99%+

CAS: 111-76-2
Formula: C₆H₁₄O₂
MW: 118.17 g/mol

ZX-001961

2-Chloro-3,5-dinitropyridine, GR

CAS: 2578-45-2
Formula: C₅H₂ClN₃O₄
MW: 203.54 g/mol

ZX-010784

2-Chloro-4-nitro aniline, AR

CAS: 121-87-9
Formula: C₆H₅ClN₂O₂
MW: 172.57 g/mol

ZX-038169

2-Chlorobenzophenone, AR

CAS: 5162-03-8
Formula: C₁₃H₉ClO
MW: 216.66 g/mol

ZX-019460

2-Chloroethanol, GR

CAS: 107-07-3
Formula: C₂H₅ClO
MW: 80.51 g/mol

ZX-009039

2-Ethoxy ethanol, GR 99%+

CAS: 110-80-5
Formula: C₄H₁₀O₂
MW: 90.12 g/mol

ZX-001768

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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