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VWR®, LDPE Twist-Seal Bags, Closure with 2 round wires, without write-on panel, Sterile
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RNase-, DNase-, pyrogen- and BPA-free
The wire tab keeps the bag open for filling
Specifications:
| Application | Sample Collection |
| Material | Polypropylene |
| Storage Temperature | Ambient |
| Product Type | sample Holder |
| Product Brand | VWR |
| Product Grade | Laboratory grade |
VWR® Twist-Seal Bags are sterile, flexible, and contaminant-free sample containers constructed from LDPE and designed for universal laboratory and field sampling. These opaque bags offer total light protection due to their black resin formulation, making them ideal for transporting or storing photosensitive substances such as vitamins, plant extracts, chemicals, and pharmaceuticals.
Each bag is equipped with two round wires that serve both as a seal and a mechanism to keep the bag open during filling. The double fold-over closure system provides a temporary, leak-resistant seal, ideal for short-term transport and containment of solid, semi-solid, or liquid samples. These bags are RNase-, DNase-, pyrogen-, and BPA-free, ensuring integrity for sensitive biological or chemical materials.
Key Features
- Made of LDPE with high flexibility and strength
- Opaque black resin for complete light barrier protection
- Sterile; RNase-, DNase-, pyrogen-, and BPA-free
- Double-wire twist seal and fold-over design for secure closure
- Keeps open during filling via integrated wire tabs
- Universal use across food, pharma, veterinary, and environmental labs
- No write-on panel; ideal for barcode or label application
- Supplied in packs of 500
Applications
- Environmental surface and soil sampling
- Food safety and quality control testing
- Storage of light-sensitive substances (e.g., vitamins, extracts)
- Biomedical and pharmaceutical research
- Clinical and veterinary specimen transport
- Forensics and carcass sampling
- Industrial hygiene sample collection
Product Variants
| Catalog Number | Capacity | Dimensions (L × W) | Thickness | Pack Size |
|---|---|---|---|---|
| 129-9021 | 60 mL | 76 × 127 mm | 63 µm | 500 |
| 129-9022 | 130 mL | 76 × 178 mm | 63 µm | 500 |
| 129-9813 | 355 mL | 114 × 190 mm | 63 µm | 500 |
| 129-9814 | 450 mL | 114 × 229 mm | 63 µm | 500 |
| 129-9816 | 650 mL | 140 × 229 mm | 76 µm | 500 |
| 129-9809 | 800 mL | 114 × 305 mm | 63 µm | 500 |
| 129-9810 | 1200 mL | 114 × 382 mm | 63 µm | 500 |
| 129-9815 | 1500 mL | 140 × 382 mm | 76 µm | 500 |
VWR® Opaque Twist-Seal Bags without write-on panels provide a secure, light-protective solution for laboratories needing to collect, transport, and protect sensitive samples. Their robust construction, sterile assurance, and leak-resistant seal make them ideal for a variety of sampling needs across environmental, clinical, pharmaceutical, and food testing sectors.
- Size: Capacity: 60 ml, Dimension: 76×127 mm, Thickness: 63 µm Capacity: 130 ml, Dimension: 76×178 mm, Thickness: 63 µm Capacity: 355 ml, Dimension: 114×190 mm, Thickness: 63 µm Capacity: 450 ml, Dimension: 114×229 mm, Thickness: 63 µm Capacity: 800 ml, Dimension: 114×305 mm, Thickness: 63 µm Capacity: 1200 ml, Dimension: 114×382 mm, Thickness: 63 µm