We have just begun to learn how to use nature's pH meter. Modi, S. et al. A DNA nanomachine that maps spatial and temporal pH changes inside living cells. Nat. Nanotechnol. 4, 325–330 (2009).

pH meters are electric appliances used for measuring the- alkalinity or acidity of a solution. pH is measured using potentiometric methods or pH indicators such as indicator solutions or strips ...

Soil pH provides various clues about soil properties and is easily determined. The most accurate method of determining soil pH is by a pH meter. A second method which is simple and easy but less ...

The image at right shows the pH scale labeled with common substances. pH measurements are typically conducted using a pH meter. This device uses a glass electrode connected to an electronic meter. pH ...

It is also possible to recharge them on the road on a car cigarette lighter using an adapter. Also, these meters are two in one in the sense that they can measure on two channels at once. This implies ...

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Measures moisture levels from 0 to 100% Measures soil pH levels from 3. 5 to 8. 0 Number of items: 2 Included components: HB-2 and 12 condition films ...