Grade guide
LR Grade (Laboratory Reagent) chemicals
Laboratory Reagent grade: good-quality chemicals for general lab work, synthesis, teaching and qualitative tests where trace impurities do not matter.
156 LR Grade (Laboratory Reagent) products
Magnesium sulphate, IP/BP/USP/EP/Ph. Eur., LR, specially dried
- CAS
- 7487-88-9
- Formula
- MgO4S
- MW
- 120.37 g/mol
VQ-047192
N,N-Dimethyl cyclohexyn,N-dimethyl cyclohexylamine, LR
- CAS
- 98-94-2
- Formula
- C8H17N
- MW
- 127.23 g/mol
VQ-020623
Phenazine methosulphate, LR, for spectroscopy ≥90.00%
- CAS
- 299-11-6
- Formula
- C14H14N2O4S
- MW
- 306.34 g/mol
VQ-046852
Phenolphthalein bisphosphate tetrasodium salt, LR 95.00–101.00%
- CAS
- 68807-90-9
- Formula
- C20H16Na4O12P2
- MW
- 602.2 g/mol
VQ-046853
Pyridoxal 5-phosphate anhydrous, LR, for spectroscopy ≥98.00%
- CAS
- 54-47-7
- Formula
- C8H10NO6P
- MW
- 247.14 g/mol
VQ-046858
FAQs
Is LR grade suitable for titration standards?
No. Standards and volumetric solutions should be prepared from AR, ACS or primary-standard grade reagents with defined assay and impurity limits.
What does SQ or synthesis grade mean?
These are manufacturer names for grades broadly similar to LR: adequate purity for synthesis, without full analytical impurity limits.
Is LR grade the same as technical grade?
No. LR is purer and more consistently specified. Technical grade is intended for industrial processes and may have few or no impurity limits.
Other grades
HPLC GradeGC GradeAR Grade (Analytical Reagent)ACS GradeExtra 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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