Whirl-Pak B00736 Bags - 18 oz. (532 ml) - Box of 500

Whirl-Pak B00736WA bags are sterile laboratory sample bags designed for collecting, transporting, and storing liquid or solid samples. They are widely used in food safety testing, environmental sampling, microbiology labs, and agricultural analysis where contamination-free sample handling is critical.

Each bag has a capacity of 18 oz (532 mL) and measures approximately 4.5 × 9 inches (11.5 × 23 cm). This size is commonly used for medium-volume laboratory samples such as milk, soil, water, and food products.

The bags use a wire-tab closure system that allows the user to fold and twist the top of the bag several times, then bend the wire tabs to lock the seal. This design provides a secure, leak-resistant closure while allowing the bag to be opened and resealed when necessary.

Yes. These sampling bags are sterilized after manufacturing, typically using ethylene oxide gas, to ensure they are free from microbial contamination. This makes them suitable for microbiological analysis, food testing, and laboratory sample transport.

The bags can typically be used in environments up to 82 °C (180 °F) and can also be frozen to extremely low temperatures, including liquid nitrogen conditions, with careful handling. This makes them useful for both refrigerated and frozen sample storage.