Whirl-Pak B01490 Write-On Bags - 13 oz. (384 ml) - Box of 500

These sterile write-on sampling bags are commonly used for collecting, storing, and transporting laboratory or field samples, including food, environmental, water, and microbiological samples. Their sterile design helps maintain sample integrity during testing and analysis.

Each bag includes a white labeling strip that allows users to write directly on the bag using a pen, marker, or pencil. This feature makes it easy to record sample information, dates, or batch numbers for proper traceability during laboratory workflows.

Yes. The bags are sterilized after manufacturing, helping reduce contamination risk and making them suitable for laboratory testing, food safety monitoring, and environmental sampling applications.

These bags are made from virgin polyethylene film, which provides excellent clarity, durability, and flexibility while remaining safe for food and laboratory sample handling.

The sampling bags can withstand a wide temperature range—from cryogenic temperatures around −346 °F (−210 °C) up to about 180 °F (82 °C). This allows samples to be frozen or stored under various laboratory conditions without damaging the bag.