Reliable pH meter by Hanna Instruments, providing automatic temperature compensation and pH readings to 0.01 resolution and +/- 0.05 % accuracy. It provides automatic calibration at 1 or 2 points.
It offers ease-of-use in combination with its affordability, making it possible for non-technical and technical personnel alike to measure pH on the spot, accurately and inexpensively.
NOTE: This unit will only measure the pH of liquids; it cannot be used to measure curds or finished cheeses.
Meter comes with one packet of each of the following:
pH 4.01 Buffer
pH 7.01 Buffer
WARRANTY: Meter is warranted for one year against defects in workmanship and materials when used for it's intedned prpose and maintained according to instructions. The electrode/probe is warranted for a period of 6 months. This warranty is limited to repair or replacement. Damages due to accident, misuse, tampering or lack of prescribed maintainence are not covered.
For more information about using a pH meter, see our blog article "Using a pH Tester."
- Range pH -2.0 to 16.0 pH
- Range Temperature -5.0 to 60.0°C / 23.0 to 140.0°F
- Resolution pH 0.01 pH
- Resolution Temperature 0.1°C / 0.1°F
- Accuracy pH ±0.1 pH
- Accuracy Temperature ±0.5°C / ±1°F
- pH Calibration automatic, at 1 or 2 points with 2 sets of memorized buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
- Temperature Compensation Automatic
- Battery Type / Life 4 x 1.5V with BEPS / approx. 300 hours of continuous use; auto-off after 8 minutes of non-use
- Environment -5 to 50°C (23 to 122°F); RH max 100%
- Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0")
- Weight 100 g (3.5 oz.)
For technical questions on this pH meter please call: 800-426-6287
The meter does come with a small packet of both pH buffers 7.01 and 4.01.
You can use the pH7.01 as a storage solution.
We also suggest you order the bottle of storage solution as well as a couple of packs (or a bottle) of the cleaning solution (milk proteins are tough to remove from the probe).
The pH buffer packs included with the meter do not last long so perhaps you might consider getting the bottles of those as well.
Cleaning the meter and storing it well with the storage solution is essential to good pH readings. The calibration with buffers should be done every day before you begin using the meter.
Q. I recently purchased the Hanna pH meter and am trying to use
it (first time) and it will not calibrate and it will not read any
measurement below 7.0. I have tried to calibrate following the
directions and the 1 point will calibrate but will not read any
measurement below 7.0 and tried two point calibration and it will always
say wrong with the pH 4 buffer. If you use the pH 4 buffer first when
it says 7.01 it will also accept it as 7.01 which is pretty weird since
it is supposed to recognize the buffer solutions. What should I do now?
All pH readings come in the range of 7.3 and 7.1. Baking soda and
water is 7.2. Vinegar is 7.1.
A. I sometimes find that the new meter needs some time to
rehydrate. Have you tried soaking the probe for 30-60 min in the
cleaner, rinsing, and then in the 7.0 buffer? If you do use the wrong
buffer the meter is incorrectly calibrated and will then not read
correctly until a successful calibration is done. I have had meters that
took a few hours to rehydrate before they calibrated correctly. It is
pointless to try to measure pH until you get a good calibration.