
Heavy-Duty 25-Slide Storage & Mailing Boxes — Foam-Lined, PPC, White (258-6025-W30), 5/Pack
These white, heavy-duty microscope slide boxes from Caplugs® Evergreen hold 25 standard 25 × 75 mm slides in a foam-lined base that retains each slide individually by friction, preventing slide-to-slide contact during courier transport and storage. The shell is molded from Polypropylene Copolymer (PPC), a tougher, more impact-resistant material than standard styrenic slide boxes, making part number 258-6025-W30 the appropriate choice wherever shell cracking during package sorting or postal handling would put irreplaceable tissue sections at risk. Supplied non-sterile in a convenient 5/Pack, these boxes are equally suited to cold-chain workflows and are rated for storage at -20°C.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 258-6025-W30 |
| Slide Capacity | 25 slides |
| Slide Format | Standard 25 × 75 × 1 mm microscope slides |
| Base Lining | Foam — individual position friction retention |
| Shell Material | Polypropylene Copolymer (PPC) |
| Color | White |
| Construction | Heavy-Duty — impact-resistant PPC shell |
| Cold Storage Rating | Suitable at -20°C |
| Sterility | Non-Sterile |
| Pack Size | 5 / Pack |
| Country of Origin | USA (California) |
Applications
- Pathology consultation submissions — the 25-slide capacity accommodates a complete case set of H&E plus multiple IHC stains across several levels in a single box
- Inter-laboratory slide transport via courier or postal service, where standard styrenic boxes carry unacceptable breakage risk during package sorting
- Cold-chain distribution of immunofluorescence frozen sections and cryostat sections requiring sub-zero temperatures through the shipping chain
- Archive storage of coverslipped IHC sections, FISH preparations, and immunofluorescence slides where slide-to-slide contact must be prevented
- Single-use-per-case or per-batch shipping programs in clinical, anatomic pathology, and reference laboratory settings
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| Ethanol (<70%) | Good — short-term contact |
| Frozen storage (−20°C) | Suitable — PPC retains impact resistance at sub-zero temperatures |
| Acetone / chlorinated solvents | Not recommended |
Quality & Procurement
Made in USA at Caplugs® Evergreen's California facility, these heavy-duty slide boxes are produced from impact-resistant Polypropylene Copolymer (PPC) resin. PPC construction provides meaningfully greater toughness than standard styrenic thermoplastics, reducing the shell-cracking risk that threatens irreplaceable diagnostic preparations in transit. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking 258-6025-W30 in USA inventory, with same-business-day shipping available on stocking items and tiered pricing for institutional, hospital, and reference laboratory accounts.
Frequently Asked Questions
What makes this box "heavy-duty" compared to standard slide boxes?
The shell is molded from Polypropylene Copolymer (PPC), which absorbs impact and compression forces — such as those encountered in courier sorting and postal handling — without cracking. Standard slide boxes are typically made from styrenic plastics that are more brittle under the same conditions, making PPC the preferred choice when slides are irreplaceable or when cold-chain integrity must be maintained.
Will these boxes hold slides during frozen shipping at -20°C?
Yes. PPC retains its impact resistance at sub-zero temperatures, making these boxes suitable for cold-chain distribution of immunofluorescence frozen sections and cryostat sections that must remain at or below -20°C throughout the shipping process.
Does the foam lining contact the coverslip or label surfaces on the slides?
The foam base uses individual-position friction retention — slides seat securely and release cleanly at the destination without adhesive contact, so coverslips, labels, and mounting medium are not disturbed during loading or unloading.
Are other colors available in this same heavy-duty 25-slide format?
Yes. The same PPC heavy-duty construction and foam-lined base are also available in Blue (258-6025-B30) and Red (258-6025-R30), allowing color-coding by case type, department, or priority without changing the protective format.