The Whirl-Pak® Write-On Bag (2721 mL / 92 oz) is a large-volume, sterile sampling bag designed for secure collection, transport, and storage of environmental, food, and laboratory samples. Constructed from blended virgin polyethylene film, this bag delivers excellent clarity, durability, and leak resistance while remaining FDA approved for food contact applications.

A built-in white write-on strip allows for clear, smear-resistant labeling using ballpoint pens, pencils, or felt-tip markers, helping maintain accurate sample identification throughout handling and transport. The puncture-proof wire closure system with inner and outer tabs provides a reliable seal for easy opening, pouring, and reclosing, while a continuous perimeter seal offers maximum protection against leaks and cross-contamination.

This large-capacity format is ideal for bulk samples, composite sampling, and situations requiring higher sample volumes across food safety, environmental monitoring, and quality control workflows.