Pen Style PH Meter

pH Meter with buffer solutions, battery, and storage box.
If you want to read up on some good information regarding pH in general please have a look at the this great post by Stephen Nilsen at Mashematics:
pH And Beer, Part 1 (Yes, It's Important)
 
 
It is highly recommended that 3mol/Litre KCL Storage Solution (KL04183) is purchased with this pH meter. To ensure the pH meter measures accurately the electrode must be stored in KCL storage solution and the electrode must be rehydrated prior to first time use, after the electrode has been in storage for a long period of time or has dried out. 
If you need to purchase extra buffer solutions for calibration they can be found here.
The rehydration method is provided in the instruction manual in the more information tab below. A probe that has dried out is the most common cause for calibration issues. If you have issues calibrating your Digital pH Meter, please rehydrate the probe with KCl Solution for 24 hours then try again.