Microbiology-PTM-OMA_Modules_1-5

Swiping of Surfaces

• Swipe 12” x 12” and 4” x 4” surface areas using sponges • Swipe 1” x 1” areas using swabs • Premoisten sponge or swab with neutralizing buffer as specified in  each method • Swipe entire surface area by swabbing/sponging back and forth 10  times horizontally and 10 times vertically • Hold sponges in sterile bags or swabs in sterile tubes with neutralizing  buffer for 2 h at room temperature before initiating enrichment