Speci-Sponge is a sterile environmental sampling sponge. Low cost, effective, and convenient absorbent sponge designed specifically for testing laboratory surfaces and equipment for the presence of Listeria, Salmonella, etc. In its dry state, the sponge is approximately 1-1/2 " x 3". The "Speci-Sponge" comes in a sterile, 18 ounce Write-On Whirl-PakŪ bag. Package of 100.