Posts tagged 'ph buffer'

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 ...
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How can I keep my pH buffers working reliably

pH Buffers are aqueous solutions with well defined pH values and have a 'buffering' capacity to maintain pH even when small quantities of acids or bases are added to them. Having a known pH value, buffers can be used as a standard to calibrate pH Meters and therefore keep on-going measurement taking accurate and reliable. To keep these statements true you need to make sure your buffers are in d...

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Whats the expiry on my pH buffers made from capsules?

[caption id="attachment_3034" align="aligncenter" width="300" caption="Reagecon buffer capsules"][/caption] I have some pH buffer capsules which I make up into liquid pH buffer solutions for calibrating my pH meter and I wondered what is the shelf life once it is made up? The reagecon buffer capsules are a simple way of extending shelf lifes of pH buffers. the powder is made up to a speci...
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Whats the difference between a NIST buffer and a NIST traceable buffer

[caption id="" align="alignleft" width="600" caption="pH buffers"][/caption] We often get asked about supplying NIST buffers, however we offer both NIST buffers and Buffers which are traceable to NIST standards. They are different products so here is a simple guide to the differences. NIST buffers: NIST is the National Institute of Standards and Technology, an agency of the U.S. Departmen...
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What's the difference between a pH buffer sachet and a pH buffer capsule?

  pH buffers are supplied in a wide range of formats and it can sometimes be confusing, here is a simple guide to the various types of buffer supplied. [caption id="" align="alignleft" width="479" caption="pH Buffer capsules"][/caption]                               &nb...
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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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