Bluelab Probe Care Kit – pH and ConductivityEverything you need to clean, calibrate and maintain your pH and conductivity probes Your Bluelab Probe Care Kit pH and Conductivity contains: Probe care instructions 18 ml single use Bluelab Solution Sachets two each of: pH 7. 0, pH 4. 0, KCl and 2. 77 EC standard solution Three plastic cups Bluelab pH Probe Cleaner Bluelab Conductivity Probe Cleaner Toothbrush for cleaning your pH probe Chamois for cleaning your conductivity probe Packaging may vary