Hanna Pool Line pH 4.01 Buffer Solution Sachets – HI-700044P

Hanna HI700044P pH 4.01 Buffer Sachets

Choose the solution for the job

HI700044P is the pH 4.01 calibration buffer in Hanna’s Pool Line sachet format. Choose it when your pH meter accepts this calibration point, including routines that pair an acidic buffer with pH 7.01.

Its reference value is pH 4.01 at 25°C, with ±0.01 pH accuracy. Match the buffer to the points required by the meter and the range you need to measure. An acidic calibration buffer does not mean pond water should be kept at that pH.

Using a fresh portion

Select calibration mode and use fresh buffer at each point in the sequence. Rinse between solutions so that one buffer does not dilute the next. Use the temperature value recognised by the meter or shown on the label, and wait for the instrument to accept a stable reading.

Storage and related supplies

Keep unused solution sealed, check its batch and expiry details and avoid returning a used portion to the supply. Open a sachet when you are ready to use it and discard the used portion afterwards.

Compare pH 7.01 buffer sachets, general-purpose electrode cleaner, the 500 ml storage solution to choose the format, measurement and care products that fit your instrument.

For the pond-testing routine behind the measurement, see pH levels in ponds guide, water hardness and pH stability guide.