Digital PH Meter Acidity Tester

The PH influences the wort extraction and the fermentability of the wort. The starting value of the water within The Netherlands is somewhere around 8. When the water circulates through the malts the PH is adjusted. Adjusting the PH value at forehand is not expedient since you do not know what the actual PH will be during and after mashing. A calculator for this can be found here (German)

https://www.maischemalzundmehr.de/index.php?inhaltmitte=toolswasserrechner

An example of a filled out form can be found here.

If you want to measure the PH you can buy something like this or this one. When you want to lower the PH you can use Lactic Acid. When you want to raise the PH you can use Sodium Carbonate.