BOJACK 15 Pack of pH Meter Buffer Solution Powder for Precise and Easy PH Calibration, PH Calibration Powder Solution 4.01pH,6.86pH and 9.18pH

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About This Easy to use: Mix the buffer powder with 250ML distilled water, put the pH meter into the solution, stir gently, and wait for a few seconds to get the result. Accuracy: T he accuracy of the buffer at 25°C is within ±0.01 pH units, and it can remain stable for a long time. It is sealed in a durable moisture-proof individual packaging to keep it fresh until use. Does not contain BPA, does not contain any other harmful and toxic chemicals Package content: 15 packets of pH calibration package: 5*pH 4.01 solution powder, 5*pH 6.86 solution powder, 5*pH 9.18 solution powder, which can meet all pH requirements and is flexible in use. Wide range of applications: testing the pH balance of drinking water, aquariums, swimming pools, spas or hydroponics Show more