The Whirl-Pak® Speci-Sponge® bag is designed for environmental surface sampling of work areas, equipment, animal carcasses, and any other place where testing for Listeria, Salmonella, E. Coli, coliforms, and other foodborne pathogens, or anthrax is required.
The special dry sponge is free of bactericides and has been tested to be non-inhibitory. It measures approximately 1½” x 3” x 5/8” (3.8 x 7.6 x 1.5cm) thick when wet, and is sterilized inside a Whirl-Pak® bag. Wearing a sterile glove when wiping with the sponge is recommended to help prevent contamination. After the sample has been collected and the sponge returned to the bag, it can be sent to a lab for testing. In the lab, media may be added directly to the bag, and the sample incubated inside the bag for a +/- test, or the sample may be squeezed out of the sponge, pipetted, and plated out.
- The 55oz bag is designed to be used in a homogenizer blender for thorough mixing of the sample and media for USDA-ARS standard procedure to identify foodborne pathogens
- Available with a sterile, ambidextrous, large size polyethylene glove attached in a bottom compartment
Environmental surface sampling can be faster and easier by using the Whirl-Pak® pre-moistened Speci-Sponge® bag. The sponge is ready to use and is hydrated with 10ml of neutralizing buffer that will neutralize several surface sanitizers including quaternary ammonium compounds, phenolics, iodine preps, chlorine preps, mercurials, formaldehyde, and glutaraldehyde. To use, squeeze out excess buffer from the sponge - this can be done by squeezing the sponge from the outside with two hands or squeezing the sponge with a sterile gloved hand after opening the bag. Wipe the surface to be tested, return the sponge to the bag, close, and send to the lab for analysis.
The buffer has a 24 month shelf life from date of manufacture and each carton is marked with an expiration date; no refrigeration is necessary. The bags are packaged in a foil liner bag to prevent evaporation of the buffer. Buffer contains monopotassium phosphate, sodium thiosulfate, and aryl sulfonate complex.