Whirl-Pak plain bag
Whirl-Pak plain bag Whirl-Pak plain bag Whirl-Pak plain bag Whirl-Pak plain bag

Nasco Whirl-Pak plain bags are sterilized specimen containers designed for reliable sample collection in veterinary clinics, farms, dairies, and laboratories. Made from a blend of linear low and low-density virgin polyethylene (2.25 mils thick), the film is FDA approved for food contact, making it suitable for feed, water, or food samples. The patented aluminum wire closing tab with plastic tape covers wire ends and forms a leak-proof seal when closed, while Tyvek pull tabs provide easy handling. Manufactured under an ISO 9001 certified quality system and available in multiple sizes, these sterile sampling bags support livestock and poultry operations, including cattle, swine, sheep, goats, and equine facilities. Sold in a bulk 500-count pack for high-volume use.

Whirl-Pak plain bag

By: Nasco

Whirl-Pak plain bag

Subtotal: $254.73
Subtotal with Autoship: $241.99
✓ Free shipping on orders over $100
🚚 Usually delivered in 1-5 days

Nasco Whirl-Pak plain bags are sterilized specimen containers designed for reliable sample collection in veterinary clinics, farms, dairies, and laboratories. Made from a blend of linear low and low-density virgin polyethylene (2.25 mils thick), the film is FDA approved for food contact, making it suitable for feed, water, or food samples. The patented aluminum wire closing tab with plastic tape covers wire ends and forms a leak-proof seal when closed, while Tyvek pull tabs provide easy handling. Manufactured under an ISO 9001 certified quality system and available in multiple sizes, these sterile sampling bags support livestock and poultry operations, including cattle, swine, sheep, goats, and equine facilities. Sold in a bulk 500-count pack for high-volume use.

About This Item

  • Specimen container for collecting and holding samples in veterinary, farm, dairy, and lab settings; suitable for food-contact applications.
1 x 500-unit pack

Are these Whirl-Pak plain bags sterile?

Yes. They are sterilized with ethylene oxide gas.

Are the bags food-safe?

Yes. The film is FDA approved for food contact, suitable for food, feed, and water samples.

How do the bags seal to prevent leaks?

They use a patented aluminum wire closing tab covered with plastic tape that forms a leak-proof seal when closed.

What temperature limits apply?

Do not use above 180°F (82°C). The bags can be frozen to any temperature, including liquid nitrogen; careful handling is required after freezing.

What are the bags made of?

A blend of linear low and low-density virgin polyethylene, 2.25 mils thick, with Tyvek pull tabs.

What sizes and pack format are available?

Available sizes include 3 in x 5 in, 3 in x 7.25 in (4 oz/120 ml capacity), 4.5 in x 9 in, and 6 in x 9 in. Sold as a 500-unit pack.

Pet Health Benefits

Every product we carry at PetMeds Direct is selected with care to support your pet's health from nose to tail.

Pain Relief

Vet-approved medications to reduce inflammation and ease joint or post-surgery pain

Heart Health

Supplements and meds that help manage blood pressure and support cardiovascular function

Disease Prevention

Vaccines and immune-boosting supplements help reduce the risk of serious illness

Skin & Coat Care

Dermatology products and omega-rich formulas promote healthy skin and a shiny coat

Happy Pet Parents

Not sure how to get started with PetMeds Direct? We make caring for your pet easier than ever — whether it's managing prescriptions, stocking up on supplements, or getting expert advice. Explore below for helpful ways pet parents use PetMeds Direct to stay on top of their pets' health. At PetMeds Direct, we're proud to serve pet lovers all across Canada.

About PetMeds Direct

PetMeds Direct was founded with one simple mission: to make pet healthcare easier, faster, and more compassionate for Canadian pet parents. What started as a small idea — helping busy families manage their pets’ prescriptions — has grown into a trusted nationwide pharmacy serving dogs, cats, and everything in between. We believe pets are family, and every tail wag and purr deserves top-tier care. That’s why we work closely with vets, offer fast shipping, and make prescriptions and wellness products more accessible than ever. At PetMeds Direct, we’re not just delivering meds — we’re delivering peace of mind.

Healthy Pets, Happy Homes

Caring for your pet’s health has never been easier. With just a few clicks, PetMeds Direct delivers trusted medications and wellness products right to your door — fast, affordable, and vet-approved. Say goodbye to last-minute pharmacy runs and hello to peace of mind.

Trusted & Certified

PetMeds Direct is a licensed and certified pharmacy, committed to providing safe, authentic medications for your pets.

Accreditation No. 311012