The Fizz Test is an adapted field method to assess soil on-farm for potential neutralising value (carbonate content).

Method key points

1. Collect and prepare a small sample of soil in a saucer or glass vessel;

2. Add drops of hydrochloric acid to the sample. The acid must be the appropriate concentration, (see Part 1, Step 2 in this fact sheet);

3. Observe any reaction and record the results; a proforma Excel data sheet can be found on GRDC’s website; and

4. Rate the reaction (fizz) based on the effervescence and noise sometimes produced.

Acid is used in this method, which means that appropriate safety precautions must be followed.