Measuring pH in Soil
MW101 with MA918B/1 electrode for measuring pH in soil
pH is a measure of the activity of the hydrogen ion (H+) in the soil solution. If the concentration of H+ is high, the medium is said to be acid. If it is low, it is said to be alkaline.
Most agricultural soils are found between the range 4 to 10 (when measured in water). For practical purposes, soil is neutral when pH is between 6 to 8, depending on plant requirements, and it is acidic when pH is less than 6 and alkaline when it is greater than 8.
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Measuring pH in soil: 1. Collect samples of soil. Take samples from a homogeneous area per 1000m2. |
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Amount of sample: Spot of sample 2. Spread the soil on a paper and let it dry out in a shaded place, or put it into a 40C oven. |
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3. Shread the dry soil and mix the samples. You will get a homogeneous sample. It mustn’t contain rocks or organic residues. Take a sample from this mixture for the measurement. |
4. Sift the soil through a 2mm sifter. |
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5. Weigh out 1 unit soil (100g is recommended) and put 2 unit (200g, 2dl) destillated water to it.. |
6. Stir it for 30 seconds.
Wait about five minutes.
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7. Stir it again then measure the pH of the solution. |
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MW101-SOIL kit | MA918B/1 pH electrode | pH 4.01 & pH 7.01 calibration solutions |
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Milwaukee Electronics Kft.Also-Kikoto sor 11C.6726 - Szeged - HungaryTel: +36 62 428 050email: info@milwaukeeinst.com | ![]() |