Hanna Instruments pH 4.01 Buffer (20 mL sachet) HI70004 KNO3 Once a reading stabilized the

Once a reading stabilized the indicator disappears and a reading can be recorded

The housing of the HALO2 GroLine Soil pH Tester is rated IP65 meaning it has a high level of protection against particles and dust

Energy x 1unit

single button operation

Hanna Instruments pH 4.01 Buffer (20 mL sachet) HI70004 KNO3 Once a reading stabilized theHI70004P is a premium quality pH 4. 01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hannas line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI70004P is for 25 sachets containing 20 mL of buffer. Accuracy of + 0. 01 pH @ 25C