Features:

Easy to use, already made fresh pH buffers for calibration

6ea. of 4, 7, 10pH plus 2 Rinsing solutions

Helpful table printed on the pouch shows what the pH value should be vs. the temperature of the buffer solution measured

Rinsing solution for cleaning the electrode before taking the next measurement to prevent contamination

Convenient pouch eliminates the need for a cup to store buffer or rinsing solution