4.00/4.01 pH calibration solution

4.00-4.01 pH calibration solution

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The 4.00/4.01 pH calibration solution (Hanna HI7007L shown in picture) is used for doing the lower end of the 2-point calibration of the pH meter.

To limit the amount of calibration solution required, we use a 1mL (1 cc) syringe (without needle) to fill tiny containers or beakers.

For more information see our Measuring pH guide.

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