Flip ‘n Fold™ Sterile Sampling Bags

Operating the bags is straightforward while maintaining a completely aseptic workflow. Simply tear away the top strip, pull the two external grip tabs to pop the mouth open without touching the interior, drop in your sample, and roll the bag over three times before bending the integrated wire tabs shut. To guarantee laboratory safety, the stainless steel wire closure is wrapped in an extended PVC tab jacket that prevents sharp wire ends from piercing gloves or scratching hands.

Key Functional Benefits:

• Contamination-Free Grip Tabs: The mechanical pull-tabs on the exterior rim mean users never have to slide fingers inside the bag opening to expand it, preserving complete interior sterility.
• Heavy-Duty 4.0 mil Option: The high-volume $55\text{ oz.}$ options (B5910 / B5911) are upgraded with extra-thick 4.0 mil walls to support heavy blended materials or dense soil and sludge samples without stretching.
• Integrated Smudge-Free Writing Panel: The white printed region on the -1 series bags bonds exceptionally well with standard laboratory markers, staying highly legible when exposed to condensation or ice.

Field & Laboratory Sampling Strategy:

• The Three-Fold Air Seal: To guarantee a true moisture-proof and airtight seal, always fold or roll the top wire band down at least three full rotations before bending the lateral wire ears flat. Under-folding can allow liquid to seep out if the bag is compressed during transport.
• Cryogenic Resilience: With an impressive lower temperature tolerance extending down to -210°C, these virgin polyethylene bags can be safely submerged into the liquid nitrogen vapor phase or ultra-low freezers for snap-freezing tissues.
• Sharp Objects Precaution: While highly resistant to stretching, avoid using the standard 2.8 mil bags for jagged environmental samples like gravel or bone shards; favor the heavy-duty 4.0 mil (B5910) series for dense or sharp materials.