It is important to use good technique when taking environmental samples to reduce the chance of cross contamination. Wearing gloves and changing them frequently, or spraying with a 70% solution of alcohol between samples, is strongly recommended.
- Swab a surface of approximately 1 ft x 1 ft using both sides of the sponge. (When swabbing drains and irregular or smaller surfaces, use the corners and sides of the sponge to get into any crevices)
- Return the sponge to the bag by pulling open the white tabs and place the sponge inside, leaving the stick outside of the bag.
- Grip the sponge through the bag and twist the stick counterclockwise. The stick should twist off without much force. Discard the leftover handle.
- Close the bag by rolling the top of the bag at least three times and secure it by bending the blue tabs inward.