Ensure accurate and reliable pH measurements with this 15-pack pH buffer solution powder kit. Featuring three essential pH calibration points—4.01, 6.86, and 9.18—this set provides everything needed for precise calibration of laboratory, industrial, and portable pH meters. Each pre-measured sachet is easy to dissolve in distilled water, delivering consistent, high-purity buffer solutions for routine testing and quality assurance. Key Features Triple-Calibration Range: Includes pH 4.01 (acidic), 6.86 (neutral), and 9.18 (alkaline) for comprehensive meter calibration. Pre-Measured Powder Sachets: Ensures accurate concentration and eliminates measurement errors—simply add distilled water. High Purity & Stability: Manufactured for consistent performance and long shelf life under proper storage. Wide Application: Suitable for lab research, environmental testing, hydroponics, aquariums, swimming pools, and educational use. Kit Contents 5 x pH 4.01 Buffer Powder Sachets 5 x pH 6.86 Buffer Powder Sachets 5 x pH 9.18 Buffer Powder Sachets (Each sachet prepares one standard buffer solution when mixed with the specified volume of distilled water.) Instructions for Use Add the contents of one sachet to the recommended volume of distilled water. Stir until fully dissolved. Use the fresh solution to calibrate your pH meter according to the manufacturer’s guidelines. Discard any unused solution after calibration. Storage Recommendations Store in a cool, dry place away from direct sunlight and chemicals. Keep sachets sealed until ready to use.