Liquid sample bags with sponge, Whirl-Pak®, 115 x 230 mm, 540 ml, 100 unit(s)Liquid sample bags with sponge, Whirl Pak, 115 x 230 mm, 540 ml Material: LDPE. Sterile For sampling of laboratory benches, furniture, devices and other areas where testing for pathogens such as listeria, salmonella and E. coli is required. The sponge is sterile and not growth inhibiting. After the sample has been collected, return the sponge to the bag. Add medium and, if necessary, incubate directly in the bag. With wire ties and large labelling