HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid free acid ≥99%, ultrapure Bioreagent for liquid chromatography, Molecular biology grade, J.T. Baker®

Warning

Free acid for liquid chromatography and molecular biology buffers. Lot analysis on label.

  • Lot analysis on label



Specification Test Results
Assay (C₈H₁₈N₂O₄S) ≥99%
Sodium (USP Id.) Passes Test
DNase Activity (None Detected) Passes Test
RNase Activity Passes Test
Protease Activity Passes Test
Absorbance of a 0.1M Solution (1-cm path vs water) at - 260 nm ≤0.050
Absorbance of a 0.1M Solution (1-cm path vs water) at - 280 nm ≤0.050
pH of 5% Solution at 25 °C 5.0 - 6.5
Ash (sulfated) ≤0.2%
Arsenic and Antimony (as As) ≤0.050 ppm
Trace Impurities - ACS - Heavy Metals (as Pb) ≤5 ppm
Trace Impurities - Iron (Fe) ≤5 ppm
QC Supervisor or equivalent to check supplier's COA to ensure proper chemical form. Passes Test