Bests & Worsts Reviews from Amazon

This ph meter came with the calibration powder and a instructions on how to calibrate and use this meter. I love this thing it is accurate and very easy to use. To test the accuracy when I got it I ran it through testing vinegar, lemon juice, milk, and then I made a batch of bbq sauce. After it was finished o tested my measuring, re calibrating and measuring again, and tested several different jars a third time and everytime they read with a range of 3.20 ph to 3.26 ph. So it is very accurate. And it is worth it's weight in gold for me.