miceuz and ioch were measuring pH of soil samples from miceuz parents’ garden today.

They took 20g soil samples from several locations – a compost pile, upper and lower parts of a slope, potting soil and a swamp.

Then they mixed it with 40ml 1M CaCl2 solution. CaCl helps release H+ ions from soil constituents.

Then they washed the soil in the ultrasound bath for 20 minutes.

Calibrated the pH meter:

And proceeded with the measurements.

Plants thrive between 6 and 7.5 pH. What they measure below is pretty important – the soil is alkaline everywhere except the peaty swamp.