Where sterile techniques are required for collection of samples, these gas sterilized spoons are ideal for use with Whirl-Pak® Sterilized Closure bags. These easy-to-use spoons are made of sturdy, durable polystyrene. The procedure for contamination-free use is to open the bag, push one spoon up, pull it out, and re-close the bag. Spoons are packed 20 per bag. Box of 100.