Soil pH Meter
Product Information:
Simple to use, no battery required.
Instant acid or alkaline reading.
Simple to use, no battery required. Instant acid or alkaline reading.
How does this work?
The meters purely rely on the chemical reaction between the soil and water. To help explain with a bit of science, the meter is an ion meter so it uses two wire coils to measure the electrical potential difference between the two wires. One wire is used for the reading and the other wire is used as the control measure. On a pH meter the electrical potential comes from the soil in the form of hydrogen ions which will act as the electrolyte which is effectively a weak battery. The bigger the difference in voltage between the wires inside, the bigger the difference in hydrogen ion activity between them. If there is more hydrogen ion activity in the test wire, it's more acidic and the meter shows this as a lower pH; in the same way, if there's less hydrogen ion activity in the test wire, the meter shows this as a higher pH (more alkaline).
DELIVERY CHARGES
Our standard delivery charge is £5.95 per order. For deliveries to the Highlands of Scotland, Northern Ireland and the Isle of Wight, an increased P&P charge of £14.95 will apply - see below for full details.
For orders over £100 in value after deduction of the online discount, we offer free P&P. No post code P&P surcharges apply.
Full details of delivery address post codes affected by the increased P&P charge are - AB31-35, AB36-38, AB41-54, AB55-56, BT, IV1-IV63, KW1-14, PH15-26, PH30-41, PH49-50, PA21-40, and PO30-41.