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PH BUFFER 4 250 mls By Flairform To ensure their accuracy, pH meters must be regularly 'calibrated' (i.e. tested and adjusted for accuracy) using standard pH buffer* solutions which are made to an internationally agreed recipe. * 'pH Buffers' are simply stable solutions that possess a specific pH value. Buffer 4.0 ? Some manufacturers claim their pH meters require only a single point calibration (i.e. only need to use a pH Buffer 7.0). However, that claim is simply not justifiable if accuracy is desired. The use of two pH buffer standards ensures that the calibration "slope" is obtained. If this precaution is not taken, when the electrode is later placed in a pH buffer 4.0 solution the meter will typically read, for example, 4.4 instead of 4.0. This potential problem can be avoided by using both the pH 7 and 4 buffers.
Please Note: This listing is for the sale of pH buffer 4 250mls only.
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Postage and handling Item location: Wollongong, New South Wales, Australia Posting to: Australia  
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Refunds by law: In Australia, consumers have a legal right to obtain a refund from a business for goods purchased (but not at auction) if the goods are faulty, not fit for purpose or don't match description. More information at returns. | ||||||
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