Features:

• Easy to use, already made fresh pH buffers for calibration 
• Helpful table printed on the pouch shows what the pH value should be vs. the temperature of the buffer solution  
• Rinsing solution used for cleaning off the pH electrode after taking the next measurement from a different solution to prevent contamination 
• Convenient 20 mL pouch eliminates the need for a cup to store buffer or rinsing solution 
•  Includes 6 Paks of 4, 7, 10 pH Buffers, 2 Rinse Solutions