15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester

Key features

• FULL RANGE. You get 5 sets. Each set includes one package of 4.00, one of 6.86 and one of 9.18 calibration solution for all pH needs
• FAST and EASY. No need to measure, just mix individual packs with distilled water.
• ACCURACY. Calibration powders enable you to test the pH of your pool, aquarium, water, and more quickly with your pH tester / meter
• LONG -TERM USE. Save time and money by mixing powders in a jar of distilled water. This lets you keep them longer and more readily available without needing more packets!