Bitran S-Series 12×12 Long-Term Specimen Storage Bag — Saranex Vapor Barrier, 1000/Case
The Globe Scientific Bitran® Series S 12×12 Bag (4745) is not a specimen transport bag — it is a long-term specimen storage bag engineered for archival applications where specimens must be held for extended periods without fixative vapor loss, odor transmission, or specimen degradation. The 3-mil Saranex construction provides a genuine vapor barrier that standard polyethylene bags cannot match, and the double-track zipper creates an airtight seal that maintains specimen integrity through months or years of storage in specimen archives, biorepositories, and long-term accession files. Appropriate for use as a primary container per CAP and OSHA specimen storage guidelines.
Key features
- 3-mil Saranex construction provides a true vapor barrier against formaldehyde, glutaraldehyde, and specimen odors — unlike standard PE specimen bags that allow vapor transmission over extended storage periods, causing fixative concentration loss and odor permeation in specimen archive rooms
- Double-track zipper creates an airtight seal with exceptional holding force compared to single-track zippers — maintaining the closed seal through the compression and repositioning events of long-term archive storage where bags are handled repeatedly over years
- 12×12 square format is optimal for square specimen containers and multi-container specimen sets — the square geometry provides a better fit and more even support for square jar formats than rectangular bags that leave corner gaps
- Approved for use as a primary container per accreditation guidelines for specimen storage — eliminating the secondary packaging steps required when standard PE bags are used for long-term storage applications that exceed their vapor containment performance
Specifications
| Material | 3-mil Saranex |
|---|---|
| Dimensions | 12" × 12" |
| Closure | Double-track zipper (airtight) |
| Vapor barrier | Yes — Saranex construction |
| Primary container | Yes — approved for primary use |
| Sterility | Non-sterile |
| Pack size | 1000/Case (250/Bag × 4 Bags) |
| Country of Origin | USA |
| Category | Bags |
Applications
Used in anatomic pathology archives, biorepositories, medical examiner offices, and forensic labs for long-term storage of formalin-fixed specimens, paraffin blocks, and biological archives requiring vapor containment over extended holding periods. The Bitran S-Series bag is the standard choice when labs need to upgrade from standard PE bags in specimen archives after formaldehyde air monitoring reveals fixative vapor levels associated with PE bag vapor transmission in closed storage rooms.
Academic and Institutional Pricing
LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.