Millipore Sigma EMSURE® Potassium Sodium Tartrate Tetrahydrate for analysis

Specifications

• Assay (alkalimetric): 99.0 - 102.0 %
• Insoluble matter: ≤ 0.005 %
• pH-value (5 %; water; 25 °C): 7.0 - 8.5
• Chloride (Cl): ≤ 0.0005 %
• Phosphate (PO₄): ≤ 0.001 %
• Sulfate (SO₄): ≤ 0.005 %
• Heavy metals (as Pb): ≤ 0.0005 %
• Ca (Calcium): ≤ 0.004 %
• Cu (Copper): ≤ 0.0005 %
• Fe (Iron): ≤ 0.0005 %
• NH₄ (Ammonium): ≤ 0.002 %
• Pb (Lead): ≤ 0.0005 %
• Corresponds to ACS,ISO,Reag. Ph Eu