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

769–792 of 1,435 products

Ligrion, GR

CAS: 9005-53-2
Formula: C₁₈H₁₃N₃Na₂O₈S₂
MW: 509.4 g/mol

ZX-009947

Lipase, AR

CAS: 9001-62-1

ZX-038190

Lithium acetate, GR 99%+

CAS: 6108-17-4
Formula: C₂H₇LiO₄
MW: 102 g/mol

ZX-012970

Lithium carbonate, GR 99.5%+

CAS: 554-13-2
Formula: CLi₂O₃
MW: 73.9 g/mol

ZX-012982

Lithium chloride, GR 99%+

CAS: 7447-41-8
Formula: ClLi
MW: 42.4 g/mol

ZX-012988

Lithium fluoride lump, 10 mm max. lump size 99.99%

CAS: 7789-24-4
Formula: FLi
MW: 26 g/mol

ZX-012993

Lithium fluoride, GR 99%+

CAS: 7789-24-4
Formula: FLi
MW: 26 g/mol

ZX-012998

Lithium hydroxide, GR 99.5%+

CAS: 1310-66-3
Formula: H₃LiO₂
MW: 42 g/mol

ZX-013002

Lithium Iodide, AR

CAS: 10377-51-2
Formula: ILi
MW: 133.9 g/mol

ZX-038191

Lithium metaborate, anhydrous, GR 98%+

CAS: 13453-69-5
Formula: BLiO₂
MW: 49.8 g/mol

ZX-013010

Lithium nitrate, GR 99%+

CAS: 7790-69-4
Formula: LiNO₃
MW: 69 g/mol

ZX-013015

Lithium perchlorate, ACS, AR ≥95.00%

CAS: 7791-03-9
Formula: ClLiO₄
MW: 106.4 g/mol

ZX-019513

Lithium sulphate, GR 99%+

CAS: 10102-25-7
Formula: H₂Li₂O₅S
MW: 128 g/mol

ZX-013025

Lithium tetraborate, for analysis grade, 99%

CAS: 12007-60-2
Formula: B₄Li₂O₇
MW: 169.2 g/mol

ZX-013029

Lithium tetraborate, GR 98%

CAS: 12007-60-2
Formula: B₄Li₂O₇
MW: 169.2 g/mol

ZX-013030

m-Coumaric acid, GR 99%

CAS: 14755-02-3
Formula: C₉H₈O₃
MW: 164.16 g/mol

ZX-007582

m-Cresol, GR 99%

CAS: 108-39-4
Formula: C₇H₈O
MW: 108.14 g/mol

ZX-018320

m-Dinitrobenzene, GR 99%+

CAS: 99-65-0
Formula: C₆H₄N₂O₄
MW: 168.11 g/mol

ZX-008932

m-Nitro toluene, AR

CAS: 99-08-1
Formula: C₇H₇NO₂
MW: 137.14 g/mol

ZX-038194

m-Nitrobenzoic acid, GR 99%+

CAS: 121-92-6
Formula: C₇H₅NO₄
MW: 167.12 g/mol

ZX-007584

m-Nitrophenol, GR 99%+

CAS: 554-84-7
Formula: C₆H₅NO₃
MW: 139.11 g/mol

ZX-008935

m-Phosphoric acid, GR

CAS: 37267-86-0
Formula: HO₃P
MW: 79.98 g/mol

ZX-000887

m-Toluidine, GR 99%+

CAS: 108-44-1
Formula: C₇H₉N
MW: 107.15 g/mol

ZX-008515

Magnesium acetate, tetrahydrate, GR 99%+

CAS: 16674-78-5
Formula: C₄H₁₄MgO₈
MW: 214.45 g/mol

ZX-013469

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

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list