Whirl-Pak B01062 Write-On Bags - 4 oz. (118 ml) - Box of 500 - Yellow Tape

This Whirl-Pak write-on bag holds approximately 4 oz (118 mL) of sample and measures about 3″ W × 7¼″ L (7.5 × 18.5 cm), making it suitable for small to medium sample collection needs.

The white write-on strip is designed for clear sample identification and labeling. You can easily write on it with a ballpoint pen, pencil, or marker, helping improve traceability and organization during sample collection and testing.

Yes — these bags are post-manufacturing sterilized, providing a contaminant-free container ideal for collecting and storing samples for microbiological, environmental, food, water, or clinical analysis.

Made from blended virgin polyethylene, these bags are strong, clear, and leak-resistant. They include puncture-proof closure tabs and Tyvek® pull tabs for secure sealing and easy opening.

These Whirl-Pak bags are suitable for freezing down to liquid nitrogen temperatures (as low as –210 °C / –346 °F) with careful handling. However, they should not be used above 82 °C (180 °F) to avoid compromising the material integrity.