A box of 10 sachets. 5 of pH 4.01 buffer solution and 5 of pH 7.01 buffer solution. Each sachet contains 20ml of solution and can be used for calibrating any pocket pH meter, or any pH meter with a conventional pH electrode.
* Care of your pH meter
There are currently no reviews for this product. Be the first to review this product!
Your orders support book donation projects
EXCELLENT SERVICE FROM NHBS. I will continue to choose them wherever possible for future purchases. Good service deserves to be rewarded.
Search and browse over 110,000 wildlife and science products
Multi-currency. Secure worldwide shipping
Wildlife, science and conservation since 1985