Why do I see ghost peaks with a new bottle of solvent?

Ghost peaks usually come from trace organics that concentrate on the column during equilibration and elute during the gradient. Switching to a gradient-tested HPLC grade, keeping bottles capped and avoiding plastic transfer lines normally removes them.

Does HPLC grade water exist?

Yes. HPLC grade water is specified for low TOC, low UV absorbance and low residue. Many laboratories produce their own with a purification system, but bottled water is useful for validation work or when the system is down.

How long does an opened bottle of HPLC acetonitrile stay usable?

There is no fixed rule, but once opened, solvents absorb water and airborne contaminants. Most laboratories set an in-use period of a few weeks to a few months based on their own baseline checks, and always keep the cap closed.

Chemical grade

HPLC Grade chemicals

Chromatography solvents purified and tested for low UV absorbance, low residue, low water and freedom from particles.

387 products in this grade

HPLC Grade products

145–168 of 387 products

Ammonium carbonate, for HPLC

CAS: 8000-73-5
Formula: C₂H₁₁N₃O₅
MW: 157.13 g/mol

ZX-019652

Ammonium carbonate, for HPLC 30-33%

CAS: 506-87-6
Formula: CH₈N₂O₃
MW: 96.09 g/mol

ZX-000758

Ammonium dihydrogenphosphate, for HPLC 99%

CAS: 7722-76-1
Formula: H₆NO₄P
MW: 115.03 g/mol

ZX-003055

Ammonium formate, for HPLC ≥98.0%

CAS: 540-69-2
Formula: CH₅NO₂
MW: 63.06 g/mol

ZX-038409

Ammonium phosphate, dibasic, for HPLC 99.5%

CAS: 7783-28-0
Formula: H₉N₂O₄P
MW: 132.06 g/mol

ZX-000759

Anisomycin, ≥98% (HPLC)

CAS: 22862-76-6
Formula: C₁₄H₁₉NO₄
MW: 265.3 g/mol

ZX-011647

Apigenin, for HPLC 98%

CAS: 520-36-5
Formula: C₁₅H₁₀O₅
MW: 270.24 g/mol

ZX-003786

Apstatin, 95% (HPLC)

CAS: 160470-73-5
Formula: C₂₃H₃₃N₅O₅
MW: 459.5 g/mol

ZX-002611

Arecoline hydrobromide, for HPLC, 98%

CAS: 300-08-3
Formula: C₈H₁₄BrNO₂
MW: 236.11 g/mol

ZX-003721

Auranofin, for HPLC ≥98%

CAS: 34031-32-8
Formula: C₂₀H₃₄AuO₉PS
MW: 678.5 g/mol

ZX-002772

Benzene, for HPLC, 99%+

CAS: 71-43-2
Formula: C₆H₆
MW: 78.11 g/mol

ZX-001721

Benzene, for HPLC, for spectroscopy 99.8%

CAS: 71-43-2
Formula: C₆H₆
MW: 78.11 g/mol

ZX-037028

Benzonitrile, for HPLC, 99.9%

CAS: 100-47-0
Formula: C₇H₅N
MW: 103.12 g/mol

ZX-001722

Benzyl Alcohol, for HPLC ≥99.8%

CAS: 100-51-6
Formula: C₇H₈O
MW: 108.14 g/mol

ZX-037105

Benzyl Alcohol, for HPLC, for spectroscopy ≥99.80%

CAS: 100-51-6
Formula: C₇H₈O
MW: 108.14 g/mol

ZX-038442

Bestatin hydrochloride, ≥98% (HPLC)

CAS: 65391-42-6
Formula: C₁₆H₂₅ClN₂O₄
MW: 344.8 g/mol

ZX-002612

Bicinchoninic acid disodium salt hydrate, ≥98% (HPLC)

CAS: 979-88-4
Formula: C₂₀H₁₀N₂Na₂O₄
MW: 388.3 g/mol

ZX-003273

Biphenyl, for HPLC >98%

CAS: 92-52-4
Formula: C₁₂H₁₀
MW: 154.21 g/mol

ZX-037375

Boc-3-(1-naphthyl)-L-alanine, ≥99% (HPLC)

CAS: 55447-00-2
Formula: C₁₈H₂₁NO₄
MW: 315.4 g/mol

ZX-002786

Boc-Dap(Fmoc)-OH, ≥98.0% (HPLC)

CAS: 122235-70-5
Formula: C₂₃H₂₆N₂O₆
MW: 426.5 g/mol

ZX-002186

Bosutinib, ≥98% (HPLC)

CAS: 380843-75-4
Formula: C₂₆H₂₉Cl₂N₅O₃
MW: 530.4 g/mol

ZX-002787

Butane sulphonic acid sodium salt, anhydrous, for HPLC 99%+

CAS: 2386-54-1
Formula: C₄H₉NaO₃S
MW: 160.17 g/mol

ZX-000760

Butane sulphonic acid sodium salt, monohydrate, for HPLC 99%+

CAS: 2386-54-1
Formula: C₄H₉NaO₃S
MW: 160.17 g/mol

ZX-000761

Butyl chloride, for HPLC, 99%+

CAS: 109-69-3
Formula: C₄H₉Cl
MW: 92.57 g/mol

ZX-001723

Compare with other grades

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