A premium quality 12,880 µS/cm conductivity standard that is prepared against a NIST traceable potassium chloride solution. HI 7030/1L - Conductivity Standard 12880 µS/cm (500 ml)SKU: HI7030/1L $31.00PriceQuantity*Expected stock in about 1 weekPre-OrderFeaturesTemperature chart of the actual µS/cm value at various temperatures printed on each bottleAir tight bottle with tamper-proof seal to ensure qualitySpecsEC Value @25°C: 12880 µS/cm