Grade guide
Extra Pure Grade chemicals
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 Extra Pure Grade products
FAQs
Does EP mean extra pure or European Pharmacopoeia?
It depends on the catalogue. Some use EP for extra pure. In pharmaceutical contexts it means European Pharmacopoeia. Always check the specification basis on the COA.
Is extra pure suitable for analytical work?
For qualitative or non-critical work, often yes. For quantitative analysis, AR or ACS grade is recommended because of its fuller impurity specification.
Is extra pure cheaper than AR?
Usually, yes. It sits between LR and AR in both purity and price.
Other grades
HPLC GradeGC GradeAR Grade (Analytical Reagent)ACS GradeLR Grade (Laboratory Reagent)Molecular Biology GradeSpectroscopy GradeLC-MS GradeIP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)Ph. Eur. Grade (European Pharmacopoeia)Food Grade (FCC)Technical GradeElectronic GradeDeuterated & Stable-Isotope-Labelled CompoundsPharmaceutical Secondary Reference Standards
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