konvio neer pH Meter Buffer Solution Powder for Precise and Easy PH Calibration (Pack of 3) pH Testers

Konvio Neer Pack of 3 ph buffer Powder to calibrate the pH meter for High Accuracy. Steps to Use: Step 1: Open the packet pour the powder into a cleaning dry glass container. Step 2: Add 250ml deionized water (or distilled water) to the container.(better a 250 ml calibrated flask) Step 3: Stir until the powder has completely dissolved. Step 4: Calibrate your pH meter.(rinse the meter by pure water before test)