3 Best
Hm Digital Digital Pens
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Product Highlights- Hold function: saves measurements for convenient reading and recording.
- Measurement range: 0-9990 ppm. from 0-999 ppm, the resolution is in increments of 1ppm. from 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. fun, translucent blue housing that's very strong and durable.
- Economy model that is ideal for end-users. highly efficient and accurate due to its advanced microprocessor technology.
- Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. display: large and easy-to-read lcd screen.
- Tds-ez meters are calibrated with a 342 ppm nacl solution. meters can be recalibrated with a mini-screwdriver. includes a tds chart sticker on the back of the meter that explains tds values.
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Product Highlights
- Range: 0.0- 14.0 ph, temprange: 1-80degcelsius/33-176degfahrenheit
- Auto-off function, data-hold function and low-battery indicator includes storage solution in a sponge embedded in a translucent cap includes a cap, batteries, storage solution, and ph 7.0 buffer
- Measures ph and temperatureatc- yes, resolution- 0.1 ph;0.1degc/f
- Accuracy: -2% to + 2%, calibration: auto-ranging to 4,7 or 10 ph
- Size: 6 x 1.3 x 0.7 inches, weight: 53.9g
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