Ready to use pH buffer solutions with color coding, accuracy +/- 0,01 pH at 20°C. Traceable to NIST, packed in unique designed, practical twinneck dosing bottles! Unique and innovative design of the “twin neck” dosing bottles offers multiple advantages: No need for a separatemeasuring container during calibration. No waste of buffer since exact and correct quantity of buffer is dispensed into the calibrating chamber at all times. Ideally suited for field work and easy to carry. Operation is simple, fast and easy; Open safety lock of the integrated calibration chamber. Fill calibration chamber from buffer resorvoir by pressing the bottle gently. Calibrate pH electrode then discard used buffer solution. Bottle is now ready for the following use.

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