Posts tagged 'buffers'

Why does my Bottle of pH Buffer State a Temperature on the Label?
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Why does my Bottle of pH Buffer State a Temperature on the Label?

Changes in temperature affect a pH reading. This is why you will usually see the temperature printed on the side of the bottle of pH buffer solutions. The buffer will be closest to its stated pH at that temperature (usually 20oC or 25oC) When calibrating a pH meter with automatic buffer recognition, it is recommended to use the correct buffer. So please check the manufacture's instructions ...
pH calibration
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What is a pH calibration?

One of the golden rules to pH measurement is to routinely calibrate your pH meter before measuring any samples. pH buffers have a known pH value, most commonly 4, 7 and 10. Calibration with these buffers gives the meter reference points to use whilst measuring the pH of other samples. https://www.youtube.com/watch?v=0t240gykR_I The TRUEscience SMART cap system uses a bluetooth signal t...

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Do I need a 20deg C buffer or a 25deg C pH buffer?

I am looking at your range of ph buffers and there are some listed as 20ºC and some at 25ºC. Whats the difference and which ones do I use? [caption id="attachment_2062" align="alignleft" width="300" caption="Colour Coded pH buffers"][/caption] The effects of Temperature on pH measurement are usually not well understood by the user and temperature has a range of effects on your measurement...
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