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Hanna Instruments Stock Number HI70032 Genuine Hanna Instruments 1382 ppm TDS Calibration Solution for use with the Hanna Combo Tester. Each packet contains 20 ml of pre-mixed, ready to use calibration solution. Simply tear or cut off the top of the packet and insert your Combo tester or pH meter. The Combo tester will automatically calibrate in the solution. When you're finished calibrating, you can fold over the top of the foil packet or pour it in a clean baby food jar or other small jar until you need it again. Purchase a Quantity of 1 for each 3 pack. We have other calibration buffers for your pH meter available separately, in money saving 3 packs and in combination packs. And $ 1.00 for each additional 3-pack. And $ 2.00 for each additional 3-pack. We accept Cash, Check, Money Order, Pay Pal and Purchase a Quantity of 1 for each 3-Pack. |