Achieve accurate pH readings and check your meter and electrode is functioning correctly with Hanna buffer solutions. Available in convenient, ready-made pH values, Hanna has a certified value calibration solution with an accuracy of +/- 0.01pH @ 25◦C for all requirements. Available in 230ml, 500ml, 1 litre, and 1 gallon bottles, plus individually sealed foil sachets containing 20ml of ready-to-use solution.
£22.86 Ex. VAT: £19.05
The pH 4.01 & 7.01 buffer solutions in quick and easy to use 20ml sachets are the most popular buffers used before analysing samples. Ideal for those requiring an accurate acid or neutral reading, particularly suitable for those working in water purification plants, the food industry, aquatics, and Hydroponics, and in any environments where the pH is expected to be acid or neutral.
The single dose sachets are really handy with each sealed sachet holding just the right amount of solution. Each time a meter or electrode is calibrated using the Hanna sachets, it is like using a newly opened bottle of solution!
To correctly maintain your meter/electrode, we highly recommend use of a Hanna cleaning solution, as well as a buffer, for maximum performance every time. pH4, along with pH7, can also be used as an emergency storage solution.
Hanna buffer solutions are prepared, ready-to-use, according to precise formulas and standardised in accordance with the National Institute of Standards and Technology (NIST) to ensure quality and accuracy. All solutions show a batch number, an expiry date, and the correlation table between pH and temperature. A certificate of analysis is available on request. All bottled solutions are sealed with an air tight, tamper-proof seal to prevent any Carbon Dioxide from entering and causing a change in the pH buffer value.
Calibration only counts when using fresh solutions and properly cleaned electrodes every time.
Routine maintenance will ensure accurate readings while extending the life of the electrode.
All calibration buffers are made to a premium quality, produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionised water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers.
All bottles meet with FDA Standards (US Food and Drug Administration).