Cyberiade.it Anonymous Remailer wrote:

The soil type pH meters are not accurate in most situations. You should get a real pH meter (Daigger has good prices) or some soil test kits. If you get a pH meter, you need a calibration standard too.

Calibration procedure in details:

http://www.ph-meter.info/pH-electrode-calibration

You can mix your soil with about 2x amount of water thouroughly, let the soil settle, and measure the pH of the water.

As described he

http://www.ph-meter.info/pH-measurem...her-procedures

Note that final result of measurement IS procedure dependent.

Mr.pH