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15 pack pH calibration buffer powder | 5 sets of 3

11,99

In stock

(2 customer reviews)

It is essential to know the exact pH at a certain time in the fermentation, so you need this pH calibration buffer powder.  Calibrating at least twice a month is recommended, and also when you haven’t used your electrode for quite some time, it was cleaned, or it is a new one or simply because you want to make sure your fermentation is going according to plan.

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Description

Acidity plays an important role in many forms of fermentation. The pH is a measure of the acidity of an aqueous solution. The pH of water is around 7 at room temperature. At room temperature, acidic solutions have a pH lower than 7, and thus a high acidity.  So water has a pH of 7, beer between 4.5 and 5, vinegar around 3 and battery acid around 0.5. The pH is a logarithmic scale, meaning that a drop of 1 pH point is 10x more acidic. The lower the pH, the more acidic your product and the more acidic your product, the safer your product. The exact acidity depends on what you are making, but very often it is essential to verify the exact pH at a certain time in the fermentation, so you need this pH calibration buffer powder. In the words of the famous sausage maker Lenin: “Trust, but verify!”

pH meter calibration

The liquids in the electrode of a pH meter age with usage which leads to measurement error. You can determine this measurement error by calibrating the pH meter in which you compare the result of the measurement with the (inter)nationally established standard value. How often you have to calibrate a pH meter depends on the use and on any contamination. With heavy use, calibrating at least twice a month is recommended, and also when you haven’t used your electrode for quite some time, it was cleaned, or it is a new one or simply because you want to make sure your fermentation is going according to plan.

About our pH calibration buffer powder

pH buffer liquid loses it’s pH after a month, and for this it is real handy to have a small stock of our pH calibration powder. That’s why we offer no less than 5 sets in one deal.

How do you calibrate a pH meter?

You calibrate a pH meter as follows:
  1. Completely empty a bag of pH6.86 in a glas beaker and add 25o ml of distilled water
  2. Stir until completely dissolved
  3. First place the electrode in the pH6.86 buffer solution. After about a minute the measurement is stable. The pH meter should then display a value of pH 6.86. If this is not the case, set the pH meter to this value. Note: you should always start by determining the deviation from pH7. This is the neutral value of the meter. Only then can you measure the distance to pH4.00 or pH9.18.
  4. Rinse the electrode well with deionized water, make a solution of pH4.00 and then place the electrode in the pH4 buffer solution.
  5. Repeat these step for pH9.18. 

Contents

  • 5 complete sets of 3 pH calibration buffer powder

Online workshop ‘how to make kimchi (and ferment other vegetables)’Fermentation workshops

In this English spoken workshop, you will learn all about kimchi, the popular fermented vegetable. Spicy, fresh, and incredibly tasty. You will discover that this flavoring is extremely versatile and that the range of preparations is enormous. There is even 7-up kimchi! In the meantime, you will also learn something about fermentation. By Foodwriter ‘Meneer Wateetons’, author of several books on fermentation and alternative food preparation techniques,  Click here for more info.

 

2 reviews for 15 pack pH calibration buffer powder | 5 sets of 3

  1. Jacco Haasnoot (verified owner)

    (0) (0)
  2. Dimitrios (verified owner)

    (0) (0)

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