Ensure accurate and reliable pH measurements with this 15‑pack buffer solution powder kit. Including three essential calibration points—pH 4.01 (acidic), 6.86 (neutral), and 9.18 (alkaline)—this set provides everything needed for precise calibration of laboratory, industrial, and portable pH meters. Each pre‑measured sachet easily dissolves in distilled water to deliver consistent, high‑purity buffer solutions, ideal for routine testing, quality control, and educational use. Key Features Triple‑Calibration Range: Covers acidic, neutral, and alkaline pH values for comprehensive meter calibration. Pre‑Measured Powder Sachets: Ensures accurate concentration—simply add distilled water to prepare a fresh solution. High Purity & Stability: Manufactured for consistent performance and a long shelf life when stored properly. Wide Application: Suitable for laboratories, environmental monitoring, hydroponics, aquariums, swimming pools, and more. Kit Contents 5 × pH 4.01 Buffer Powder Sachets 5 × pH 6.86 Buffer Powder Sachets 5 × 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. Ideal for technicians, researchers, hobbyists, and educators who require dependable pH calibration standards for accurate and repeatable measurements.