The newly upgraded model features digital calibration

Light-Blocking Foil: UV-resistant packaging prevents degradation and extends shelf life

Pro tip: For individual product features and full specifications

Always save the cap and collar for continued probe protection

HI70031P Conductivity Calibration Standard 1413 µS/cm (25 x 20mL) | Hanna probe cleaning The newly upgraded model featuresHI70031P Conductivity Calibration Standard 1413 S cm (25 x 20mL Sachets) Premium NIST traceable conductivity calibration solution standardized at 1,413 S cm for accurate calibration of EC meters, TDS testers, and conductivity instruments. Each box contains 25 single use sachets ideal for hydroponics, aquaponics, water quality testing, and laboratory applications. Why Choose HI70031P Calibration Standard? NIST traceable accuracy Standardized with