Kodida pH calibration powder pH meter accessories

Buffer configuration method

The instrument is equipped with three packs of powdered standard buffer when it leaves the factory, and each pack of powdered standard buffer can prepare 250mL of buffer solution. Do not use metal containers for buffer preparation.

Take the preparation of 250mLpH value=6.86 standard buffer solution as an example to illustrate the preparation method:

1. When preparing, use a clean plastic (glass) container with a capacity greater than 250mL, take out the plastic pouch of pH=6.86 (green) buffer 2, tear it open and pour the white powder inside into the container.

2. Add 250mL of distilled water to the plastic (glass) container. If there is no distilled water, it can be replaced by 250mL of commercially available bottled purified water.

3. Stir slowly with a clean glass or other tools until the powder is completely dissolved.

4. The method of preparing standard buffer solution of 4.01 and 9.18 (group 7.00) is the same as above. After the preparation of the three buffer solutions is completed, labels should be labeled in time to prevent confusion in the future.

Buffer usage

The 250mL buffer solution can be divided into multiple uses. When the instrument is calibrated, use three small plastic (glass) containers, pour 4.01, 6.86 and 9.18 buffer solutions into them, and mark them. The amount of buffer used only needs to be able to fully submerge the glass electrode. The used buffer should be discarded and not reused. Store the rest in a cool and dry place at 20-25°C.

PH correction powder X1, certificate of conformity X1, warranty card X1, manual X1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.