Can I use a spectroscopy grade solvent for HPLC?

Often the UV performance is similar, but spectroscopy grades are not always filtered to 0.2 µm or tested for residue and gradient behaviour. For HPLC, a purpose-made HPLC grade is the safer choice.

Why does potassium bromide need its own grade?

KBr discs for IR must be transparent across the mid-IR range and free of water, which absorbs strongly. Spectroscopy grade KBr is dried and tested for clear background, and it should be stored in a desiccator.

What causes fluorescence background in a solvent?

Traces of aromatic compounds and some stabilisers fluoresce under UV excitation. Fluorescence grade solvents are purified to remove them, and the COA reports background against a quinine sulfate reference.

Chemical grade

Spectroscopy Grade chemicals

Solvents and salts with guaranteed transmittance in the UV, visible or IR region and low fluorescence, for spectrophotometric work.

155 products in this grade

Spectroscopy Grade products

97–120 of 155 products

Isooctane, for spectroscopy

CAS: 540-84-1
Formula: C₈H₁₈
MW: 114.23 g/mol

ZX-037438

Isopropanol, for HPLC, for spectroscopy ≥99.8%

CAS: 67-63-0
Formula: C₃H₈O
MW: 60.1 g/mol

ZX-036996

Isopropanol, for spectroscopy, 99%

CAS: 67-63-0
Formula: C₃H₈O
MW: 60.1 g/mol

ZX-001869

Methanol-D4 99.8 atom% D, for spectroscopy 99.8%

CAS: 811-98-3
Formula: CH₄O
MW: 36.07 g/mol

ZX-038678

Methanol, for HPLC, for spectroscopy ≥99.80%

CAS: 67-56-1
Formula: CH₄O
MW: 32.04 g/mol

ZX-038491

Methanol, for spectroscopy 99.7%

CAS: 67-56-1
Formula: CH₄O
MW: 32.04 g/mol

ZX-037090

Methyl cyclohexane, for spectroscopy >99.8%

CAS: 108-87-2
Formula: C₇H₁₄
MW: 98.19 g/mol

ZX-037415

Methyl isobutyl ketone, for UV Spectroscopy, 99%+

CAS: 108-10-1
Formula: C₆H₁₂O
MW: 100.16 g/mol

ZX-001871

Methylene blue trihydrate, for spectroscopy

CAS: 7220-79-3
Formula: C₁₆H₂₄ClN₃O₃S
MW: 373.9 g/mol

ZX-019499

n-Heptane, for HPLC, for spectroscopy 99%

CAS: 142-82-5
Formula: C₇H₁₆
MW: 100.2 g/mol

ZX-037031

n-Heptane, for spectroscopy, 99%

CAS: 142-82-5
Formula: C₇H₁₆
MW: 100.2 g/mol

ZX-001874

n-Hexane, for spectroscopy 99%

CAS: 110-54-3
Formula: C₆H₁₄
MW: 86.18 g/mol

ZX-001875

N,N-Dimethyl formamide, for HPLC & UV Spectroscopy

CAS: 68-12-2
Formula: C₃H₇NO
MW: 73.09 g/mol

ZX-001738

N,N-Dimethylacetamide, for HPLC, for spectroscopy ≥99.7%

CAS: 127-19-5
Formula: C₄H₉NO
MW: 87.12 g/mol

ZX-038495

NADH, disodium salt, for spectroscopy ≥97.00%

CAS: 606-68-8
Formula: C₂₁H₂₇N₇Na₂O₁₄P₂
MW: 709.4 g/mol

ZX-038349

Ninhydrin, AR, for spectroscopy >99%

CAS: 485-47-2
Formula: C₉H₆O₄
MW: 178.14 g/mol

ZX-037324

Nitro methane, for spectroscopy

CAS: 75-52-5
Formula: CH₃NO₂
MW: 61.04 g/mol

ZX-037442

p-Nitrophenol, AR, for spectroscopy ≥99.00%

CAS: 100-02-7
Formula: C₆H₅NO₃
MW: 139.11 g/mol

ZX-038354

p-Nitrophenol, for spectroscopy

CAS: 100-02-7
Formula: C₆H₅NO₃
MW: 139.11 g/mol

ZX-038106

Paraffin oil, IR spectroscopy

CAS: 8012-95-1

ZX-017778

Paraformaldehyde-d2, for spectroscopy, for NMR

CAS: 32008-59-6

ZX-019359

Pentane, for HPLC, for spectroscopy ≥99.0%

CAS: 109-66-0
Formula: C₅H₁₂
MW: 72.15 g/mol

ZX-036998

Pentane, for spectroscopy, 99%+

CAS: 109-66-0
Formula: C₅H₁₂
MW: 72.15 g/mol

ZX-001876

Perfluorokerosene, 99.9%

ZX-010594

Compare with other grades

HPLC Grade GC Grade AR Grade (Analytical Reagent)ACS Grade LR Grade (Laboratory Reagent)Extra Pure Grade Molecular Biology 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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