Seward blender bags are manufactured using high-grade, food-quality polyethylene. Strongest and most durable bags available—2.75 mil thick. Gamma-irradiated—sterility certificate available upon request.

Closure Bags – can be securely closed with the wire closure strip across the top of the bag. These bags also feature rounded corners for optimal sample recovery.

Strainer Bags – have an inner plastic mesh bag that retains larger particles of your sample to help prevent your pipet from getting clogged.