Hach Conductivity Standards feature accurate determination of conductivity value by conductivity meters, sensors and their calibration for reliable measurements. Potassium Chloride (KCl) and Sodium Chloride (NaCl) Standard Solutions are the most popular Hach Conductivity Standards. All solutions are available in various concentrations and packaging, including bottles or single-use sachets (singlet) with the volumes from 20 mL to 1000 mL. Most of the conductivity standards are traceable to NIST standard reference materials. Certified Hach Conductivity Standards are sealed in premium aluminium packaging ensuring freshness of the solution and its guaranteed shelf life.