NIST pH and EC Calibration Solution, pH 4 7 10, EC Standards, with 3M KCl, 250 mL

About this item

• Calibration Solutions and Storage Liquid: pH buffer solutions (4.00, 7.00, and 10.01), conductivity standards (84 uS/cm, 1413 uS/cm, 12.88 mS/cm), and 3M KCl storage solution for accurate calibration and maintenance of pH and EC meters
• NIST-Traceable Accuracy: Prepared with high-purity salts and deionized water under NIST standards, ensuring accurate, stable, and reliable measurements
• Ready-to-Use: All solutions are pre-mixed and sealed in 250 mL bottles, requiring no dilution and providing consistent, repeatable results
• Electrode Protection: 3M KCl storage solution maintains electrode hydration, prevents clogging, and extends probe lifespan
• Compatibility: Suitable for laboratories, water testing, hydroponics, education, and industrial QC, compatible with all pH, ORP, and conductivity meters