Grade guide
HPLC Grade chemicals
Solvents and reagents made for high-performance liquid chromatography: low UV absorbance, low residue, low water and filtered to remove particles.
387 HPLC Grade products
![Difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron, 99% (HPLC) chemical structure](/media/structures/DRJHPEGNOPSARR-UHFFFAOYSA-N.svg)
Difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron, 99% (HPLC)
- CAS
- 121207-31-6
- Formula
- C14H17BF2N2
- MW
- 262.11 g/mol
VQ-018362
Dimethyl sulphoxide, for HPLC, for spectroscopy ≥99.50%
- CAS
- 67-68-5
- Formula
- C2H6OS
- MW
- 78.14 g/mol
VQ-046984
Ethyl acetate, HPLC Plus, for HPLC, GC, and residue analysis, 99.9%
- CAS
- 141-78-6
- Formula
- C4H8O2
- MW
- 88.11 g/mol
VQ-001732
Fluorescein 5(6)-isothiocyanate, mixture of 2 components, ≥90% (HPLC)
- CAS
- 27072-45-3
- Formula
- C42H22N2O10S2
- MW
- 778.8 g/mol
VQ-000587
Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
- CAS
- 3326-32-7
- Formula
- C21H11NO5S
- MW
- 389.4 g/mol
VQ-003333
FAQs
Can I use AR grade methanol for HPLC?
Sometimes, for isocratic methods at longer wavelengths, but AR grade is not tested for UV absorbance or gradient blanks. For low-wavelength or gradient work, HPLC grade avoids baseline and ghost-peak problems.
Is HPLC grade the same as gradient grade?
Gradient grade is a subset of HPLC grade that has additionally been run as a blank gradient to show no interfering peaks. It is preferred for gradient methods and trace analysis.
Is HPLC grade suitable for LC-MS?
It may work, but LC-MS grade is recommended because it limits metal ions and background contaminants that cause adducts and ion suppression.
Other grades
GC GradeAR Grade (Analytical Reagent)ACS GradeLR Grade (Laboratory Reagent)Extra Pure GradeMolecular 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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