0.25–0.5 mL Storage Boxes, HDPE, White — 240-8281-000 | 12/Bag | Caplugs® Evergreen

81-Position Freezer Storage Boxes for 0.4 mL CryoSure® Vials — Cardboard, White, 12/Bag

Technical Narrative

The Caplugs® Evergreen 240-8281-000 is an 81-position cardboard freezer storage box designed for organized -20°C, -80°C, and liquid nitrogen vapor phase archiving of 0.4 mL CryoSure® cryo vials (Caplugs® Evergreen 300-3900 family). The 9×9 grid provides 81 individually addressed positions — 62% more specimens per box than a standard 50-position format — enabling high-density biobank and compound library archiving without proportionally increasing freezer drawer real estate. Each position is individually accessible for random-access specimen retrieval without disturbing adjacent vials — the defining operational requirement for large biorepository programs performing daily random-access sample retrieval.

Standard laboratory cardboard construction provides dimensional stability across the full cryogenic temperature range from -20°C through -196°C liquid nitrogen vapor phase — the material of choice for cryo storage boxes across biobank, pharmaceutical, and research programs worldwide. Cardboard's low thermal mass enables rapid temperature equilibration during storage and retrieval cycles, minimizing the thermal stress on neighboring vials during individual specimen access. The white surface accepts permanent marker for box-level and row-column position labeling, supporting chain-of-custody and LIS-linked specimen tracking.

At $54.41 per 12/Bag — $4.5339 per box — the delivers high-density cryo vial archiving at economics supporting single-use-per-aliquoting-event allocation in high-throughput biobank programs. Designed to pair with: 300-3900-G20 (CryoSure® 0.4 mL HDPE vials, Green, 200/Bag); 300-3900-R20 (CryoSure® 0.4 mL HDPE vials, Red, 200/Bag); 300-3900-Y20 (CryoSure® 0.4 mL HDPE vials, Yellow, 200/Bag) for complete matched vial-and-box procurement from a single vendor.

Technical Specifications — Caplugs® Evergreen

Compatible Vial Formats & Storage Applications —

The is designed for 0.4 mL CryoSure® vials (Caplugs® Evergreen 300-3900 family). The 81-position 9×9 grid maximizes specimen density per freezer drawer. Compatible workflows:

Validate vial OD against well diameter before bulk purchase if using non-CryoSure® vials. White cardboard surface accepts permanent marker for box and position labeling. Keep dry — avoid direct liquid contact.

Chemical & Environmental Resistance — Cardboard — Cryogenic Storage

Cardboard is the industry-standard material for cryogenic freezer boxes from -20°C through liquid nitrogen vapor phase. Maintain dry storage conditions to preserve structural integrity.

Clinical & Research Laboratory Applications

The serves biobank and biorepository programs archiving 0.4 mL CryoSure® vials at -80°C and liquid nitrogen vapor phase; pharmaceutical drug discovery compound libraries requiring high-density cryo storage; molecular biology and genomics labs archiving extracted nucleic acid panels; cell biology programs storing cell line and glycerol stock cryo vials; microbiology reference culture collections; and clinical research programs managing longitudinal biospecimen cohorts.

U.S. Manufacturing, Quality & Institutional Procurement

Every Caplugs® Evergreen lot is precision-molded or manufactured at our California facility and subject to rigorous dimensional inspection and material purity verification. We supply reference laboratories, hospital systems, biotech firms, and federal procurement offices under institutional pricing programs with blanket-order support and same-day shipping on stocked inventory. Request a compatibility sample below to validate fit with your workflow before committing to volume.

Frequently Asked Questions — Caplugs® Evergreen

What vial sizes fit the 81-position freezer box?

The is designed for 0.4 mL CryoSure® cryo vials — the Caplugs® Evergreen 300-3900 family (available in Green, Red, and Yellow HDPE caps). Always validate vial OD against well diameter with a sample box before bulk purchase if using a different vial brand.

Is the compatible with liquid nitrogen storage?

Yes. Standard laboratory cardboard freezer boxes are compatible with liquid nitrogen vapor phase storage at -196°C. For liquid nitrogen submersion (immersion phase), polypropylene boxes are recommended — cardboard is rated for vapor phase only. Confirm your storage configuration (vapor vs immersion phase) before selecting this format.

Can I use the box for vials other than CryoSure®?

Yes, provided the alternative vial OD matches the well diameter of the 9×9 grid. The is designed for 0.4 mL format vials. Request a free sample box to validate fit with your specific vial brand and OD before committing to volume purchase.