calibration

hello as the title suggests i have a query about calibrating this new ph pen i got by healthwiser, it came with those powder solutions 4.00, 6.86 and a 9.18 now heres my issue the manual says use distilled water to calibrate and the packet say used deionised? will either one be ok to use ? will...

Hello! I had been using a liquid pH test kit for years and finally decided to splurge on a pH pen. It is definitely more convenient than the drops and I am glad that I did it. I do have one question about the pH pen, though, and I am hoping that some of you with more experience can help me out...