Bluelab Conductivity Standard Solutions are essential for improving EC/PPM accuracy in your measurements. This kit includes cleaning solutions for both pH and conductivity probes, along with calibration solutions (pH 4.0, pH 7.0, and KCl) to ensure optimal performance. Regular cleaning and calibration are key to maintaining probe accuracy and extending their lifespan. The product also includes MSDS for all solutions and detailed cleaning instructions for Bluelab pH, Soil pH, and Conductivity probes. Perfect for growers seeking reliable, long-term results.