If the liquid is clean of debris; you can place the liquid in a receptacle of meter and determine the pH and electrical conductivity immediately in the field.

However, if debris is present, you must pour the liquid through a coarse filter paper to obtain a clean sample.

After filtering, immediately place liquid in receptacle of meter.

Determine the pH and electrical conductivity value from the position of the needle on the meter.

Make a note of the pH and electrical conductivity measurements for future reference.

If additional analyses such as nitrate nitrogen are desired, send filtered samples immediately to a commercial laboratory.

Samples should remain cool during storage and transport.