American Society for Testing and Materials (ASTM) Standard Specification for Reagent Grade Water Type IType IIType IIIType Iv Electrical Conductivity Max (pX/cm @ 25C)0.0561.00.255.0 Electrical Resistivity Min (MOhms-cm @ 25C)181.04.00.2 pH @ 25°C---5.0-8.0 TOC max (µg/L)10050200No Limit Sodium max (µg/L)151050 Silica max. (µg/L)33500No Limit Chloride max (µg/L)151050 When bacterial levels need to be controlled, reagent grade types should be further discussed as follows: Type AType BType C Total Bacterial Count Max CFU/100ml1101000 Endotoxin max. IU.ml0.030.025-
