07/04/2026
A large chunk of calibration issues are to do with buffers - not from the sensor or the meter itself!
Here are three quick buffer habits that can make your calibrations more consistent:
#๐ญ - ๐ฃ๐ผ๐๐ฟ ๐ถ๐ ๐ผ๐๐ - ๐ป๐ผ ๐ฑ๐ผ๐๐ฏ๐น๐ฒ-๐ฑ๐ถ๐ฝ๐ฝ๐ถ๐ป๐ด!
Dipping the probe straight into the buffer bottle slowly contaminates the whole bottle.
Better habit:
โข Pour a small amount into a separate container
โข Calibrate
โข Discard it afterwards
Your buffer stays clean and future calibrations stay trustworthy.
#๐ฎ - ๐ ๐ฎ๐๐ฐ๐ต ๐ฏ๐๐ณ๐ณ๐ฒ๐ฟ ๐๐ฒ๐บ๐ฝ๐ฒ๐ฟ๐ฎ๐๐๐ฟ๐ฒ ๐๐ผ ๐๐ฎ๐บ๐ฝ๐น๐ฒ ๐๐ฒ๐บ๐ฝ๐ฒ๐ฟ๐ฎ๐๐๐ฟ๐ฒ
Buffers are certified at 25ยฐC, but their pH shifts slightly with temperature.
For example:
โข pH 10.00 buffer at 20ยฐC โ 10.06
It's a small change, but it matters when accuracy counts.
#๐ฏ - ๐๐ถ๐๐ฒ ๐๐ต๐ฒ ๐ฝ๐ฟ๐ผ๐ฏ๐ฒ ๐ฎ ๐บ๐ผ๐บ๐ฒ๐ป๐ ๐๐ผ ๐๐ฒ๐๐๐น๐ฒ
Let the probe sit in the buffer for 30โ60 seconds before accepting the reading.
If the probe and buffer started at different temperatures, the reading can drift slightly before stabilising.
