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

289–312 of 1,435 products

Barium chloride, GR 99%+

CAS: 10326-27-9
Formula: BaCl₂H₄O₂
MW: 244.26 g/mol

ZX-013341

Barium chromate, GR 99%

CAS: 10294-40-3
Formula: BaCrO₄
MW: 253.32 g/mol

ZX-013343

Barium diphenylamine sulphonate, GR

CAS: 6211-24-1
Formula: C₂₄H₂₀BaN₂O₆S₂
MW: 633.9 g/mol

ZX-000319

Barium Fluoride Crystal / Window (40mm Dia. x 3.5mm Thick)

ZX-017038

Barium fluoride, GR 99%

CAS: 7787-32-8
Formula: BaF₂
MW: 175.32 g/mol

ZX-013346

Barium hydroxide, octahydrate, GR 98%+

CAS: 12230-71-6
Formula: BaH₁₈O₁₀
MW: 315.46 g/mol

ZX-013349

Barium nitrate, GR 99%+

CAS: 10022-31-8
Formula: BaN₂O₆
MW: 261.34 g/mol

ZX-013358

Barium perchlorate, GR 98%

CAS: 13465-95-7
Formula: BaCl₂O₈
MW: 336.23 g/mol

ZX-013363

Barium sulphate micropowder, APS 100 nm, IP/BP/USP/EP/Ph. Eur.

CAS: 7727-43-7
Formula: BaO₄S
MW: 233.39 g/mol

ZX-038576

Barium sulphate, GR 98%+

CAS: 7727-43-7
Formula: BaO₄S
MW: 233.39 g/mol

ZX-013372

Bathocuproine, GR 99%+

CAS: 4733-39-5
Formula: C₂₆H₂₀N₂
MW: 360.4 g/mol

ZX-017398

Bathocuproinedisulphonic acid disodium salt, GR

CAS: 52698-84-7
Formula: C₂₆H₁₈N₂Na₂O₆S₂
MW: 564.5 g/mol

ZX-000493

Bathophenanthroline disulphonic acid disodium salt, GR 99%+

CAS: 53744-42-6
Formula: C₂₄H₁₄N₂Na₂O₆S₂
MW: 536.5 g/mol

ZX-017399

Bathophenanthroline, GR 99%+

CAS: 1662-01-7
Formula: C₂₄H₁₆N₂
MW: 332.4 g/mol

ZX-017400

Bathophenanthrolinedisulphonic acid disodium salt hydrate, AR

CAS: 52746-49-3
Formula: C₂₄H₁₄N₂Na₂O₆S₂.xH₂O
MW: 536.49 g/mol

ZX-019544

Bentonite (API & OCMA Grade), AR

CAS: 1302-78-9

ZX-038421

Benzaldehyde, GR 99%+

CAS: 100-52-7
Formula: C₇H₆O
MW: 106.12 g/mol

ZX-007149

Benzene, GR 99%+

CAS: 71-43-2
Formula: C₆H₆
MW: 78.11 g/mol

ZX-001779

Benzethonium chloride, AR 99.0%

CAS: 121-54-0
Formula: C₂₇H₄₂ClNO₂
MW: 448.1 g/mol

ZX-037756

Benzidine hydrochloride, GR

CAS: 531-85-1
Formula: C₁₂H₁₄Cl₂N₂
MW: 257.16 g/mol

ZX-002775

Benzidine sulphate, GR

CAS: 531-86-2
Formula: C₁₂H₁₄N₂O₄S
MW: 282.32 g/mol

ZX-002776

Benzidine, GR

CAS: 92-87-5
Formula: C₁₂H₁₂N₂
MW: 184.24 g/mol

ZX-002778

Benzoic acid, GR 99%+

CAS: 65-85-0
Formula: C₇H₆O₂
MW: 122.12 g/mol

ZX-007462

Benzoic Acid, IP/BP/USP/EP, AR

CAS: 65-85-0
Formula: C₇H₆O₂
MW: 122.12 g/mol

ZX-038037

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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