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HEPES sodium salt ≥99.5% for biopharmaceutical production
HEPES sodium salt ≥99.5% for biopharmaceutical production
Supplier:  VWR Chemicals
Certificates
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HEPES sodium salt ≥99.5% for biopharmaceutical production
Supplier:  VWR Chemicals
Certificates

Specification Test Results

  • Assay:
    Min. 99.5 %
  • Appearance:
    White crystalline powder
  • Cell culture toxicity:
    Passes test
  • DNases:
    Not detected
  • Identification by IR:
    Conforms to structure
  • Proteases:
    Not detected
  • RNases:
    Not detected
  • Solubility (1 mol/l):
    Clear and complete
  • pH (1 %):
    9.5 - 10.5
  • pKa (25°C):
    7.4 - 7.7
  • Heavy metals (as Pb):
    Max. 5 ppm
  • Loss on drying (105°C):
    Max. 2.0 %
  • Ca (Calcium):
    Max. 5 ppm
  • Cu (Copper):
    Max. 5 ppm
  • Fe (Iron):
    Max. 5 ppm
  • Mg (Magnesium):
    Max. 5 ppm
  • Mn (Manganese):
    Max. 5 ppm
  • Zn (Zinc):
    Max. 5 ppm
  • Absorbance (260 nm) (1 mol/l):
    Max. 0.5
  • Absorbance (280 nm) (1 mol/l):
    Max. 0.5
  • Bioburden:
    Max. 100 CFU/g
  • Endotoxin (0,2 %):
    Max. 0.1 EU/mg

Specification Test Results