Specification Test Results

• For Laboratory,Research,or Manufacturing Use:
  ≥99.5%
• Assay ((NH₄)₂SO₄):
  ≥99.5 %
• Insoluble Matter:
  ≤0.005 %
• pH of 5% Solution at 25°C:
  5.0 - 6.0
• Residue after Ignition:
  ≤0.005 %
• Absorbance of a 1M Solution - 260 nm:
  ≤0.04
• Absorbance of a 1M Solution - 280 nm:
  ≤0.04
• RNase Activity (None Detected):
  Passes Test
• DNase Activity (None Detected):
  Passes Test
• Protease Activity (None Detected):
  Passes Test
• Chloride (Cl):
  ≤3 ppm
• Nitrate (NO₃):
  ≤10 ppm
• Phosphate (PO₄):
  ≤3 ppm
• Arsenic (As):
  ≤0.2 ppm
• Trace Impurities - Cadmium (Cd):
  ≤2 ppm
• Trace Impurities - Calcium (Ca):
  ≤2 ppm
• Trace Impurities - Copper (Cu):
  ≤0.2 ppm
• Trace Impurities - Iron (Fe):
  ≤1 ppm
• Trace Impurities - Lead (Pb):
  ≤0.1 ppm
• Trace Impurities - Lithium (Li):
  ≤2 ppm
• Trace Impurities - Magnesium (Mg):
  ≤2 ppm
• Trace Impurities - Manganese (Mn):
  ≤0.6 ppm
• Trace Impurities - Potassium (K):
  ≤2 ppm
• Trace Impurities - Zinc (Zn):
  ≤0.5 ppm
• Solution Test:
  Passes Test