PH buffer powder gives you a no hassle option for the exact amount of buffer solution you need for accurate readings. Calibration powders enable you to accurately test the pH of your pool, aquarium, water, and more quickly with your pH tester/meter. Fast and easy to use, no need to measure, just mix individual packs with distilled water. The set includes 1 package of 4.00, one of 6.86 and one of 9.18 calibration solution for all pH needs. Perfect for testing pH balance of drinking water, pool, aquarium, RO system, spa, or hydroponics, etc. Specification Color: show as pictures. Capacity: 250ml. Solution powder: 4.00/6.86/9.18. Accuracy: ±0.01pH. Note There might be a bit color distortions due to different computer resolutions. Package Included 1 x 4.00 PH buffer power. 1 x 6.86 PH buffer power. 1 x 9.18 PH buffer power.
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