Chemical grades explained
Grade determines purity, impurity limits and what a chemical is fit for. Use these guides to choose the right grade — and browse the products we supply in each.
HPLC Grade
Solvents and reagents made for high-performance liquid chromatography: low UV absorbance, low residue, low water and filtered to remove particles.
387 products →GC Grade
Solvents tested for gas chromatography: high GC purity, low non-volatile residue and minimal peaks that interfere with FID, ECD or MS detection.
150 products →AR Grade (Analytical Reagent)
Analytical Reagent grade: high-purity chemicals with specified maximum limits for individual impurities, suitable for quantitative analysis.
1,434 products →ACS Grade
Reagents that meet the specifications of ACS Reagent Chemicals, published by the American Chemical Society, for demanding analytical work.
138 products →LR Grade (Laboratory Reagent)
Laboratory Reagent grade: good-quality chemicals for general lab work, synthesis, teaching and qualitative tests where trace impurities do not matter.
156 products →Extra Pure Grade
Extra pure grade: higher assay and more impurity tests than LR, below full AR specification. A common choice for synthesis and routine lab work.
640 products →Molecular Biology Grade
Reagents tested for absence of DNase, RNase and protease activity and low contaminants, for PCR, cloning, sequencing and nucleic-acid work.
199 products →Spectroscopy Grade
Solvents with guaranteed optical transmittance in the UV, visible and IR regions, and low fluorescence, for spectrophotometric measurement.
155 products →LC-MS Grade
Solvents and additives for liquid chromatography-mass spectrometry: low metal ions, low background ions and tested for MS suitability.
0 products →IP Grade (Indian Pharmacopoeia)
Material tested to the monograph of the Indian Pharmacopoeia, published by the Indian Pharmacopoeia Commission, for pharmaceutical use in India.
480 products →BP Grade (British Pharmacopoeia)
Material that complies with its British Pharmacopoeia monograph, the UK's official standard for medicinal substances, which incorporates Ph. Eur. texts.
579 products →USP Grade (United States Pharmacopeia)
Material that complies with its USP–NF monograph, the official US compendial standard for drug substances, excipients and dietary ingredients.
755 products →Ph. Eur. Grade (European Pharmacopoeia)
Material that complies with its European Pharmacopoeia monograph, the binding quality standard for medicines across the Ph. Eur. member states.
4,598 products →Food Grade (FCC)
Food-grade chemicals meeting Food Chemicals Codex or equivalent food-additive specifications, for use in food, beverage and feed production.
89 products →Technical Grade
Technical or commercial grade chemicals for industrial processes, where cost and bulk availability matter more than trace-level purity.
76 products →Electronic Grade
Ultra-high-purity acids, solvents and etchants with metal impurities at ppb or ppt level and low particle counts, for semiconductor and electronics work.
20 products →Deuterated & Stable-Isotope-Labelled Compounds
Compounds enriched with deuterium, ¹³C or ¹⁵N for use as internal standards in mass spectrometry, NMR solvents and mechanistic or metabolic studies.
1,488 products →Pharmaceutical Secondary Reference Standards
Working reference standards characterised and qualified against official pharmacopoeial primary standards, for routine QC testing of medicines.
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