Heavy-Duty 25-Slide Storage & Mailing Boxes — PPC, Red, Foam-Lined Base (258-6025-R30), 5/Pack
These heavy-duty 25-slide storage and mailing boxes are constructed from Polypropylene Copolymer (PPC) with a foam-lined base that holds each standard 25 × 75 mm microscope slide in an individual friction-retention pocket. Designed for pathology consultation submissions, inter-laboratory slide transport, and cold-chain archive programs, the PPC shell delivers significantly greater impact resistance than standard styrenic plastic slide boxes — protecting irreplaceable tissue sections through the drop and compression forces of courier sorting and postal handling. The red color provides high-visibility identification for priority, STAT, or urgent consultation cases in pathology routing systems.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 258-6025-R30 |
| Slide Capacity | 25 slides |
| Slide Format | Standard 25 × 75 × 1 mm microscope slides |
| Shell Material | Polypropylene Copolymer (PPC) |
| Base Lining | Foam — individual slide position friction retention |
| Color | Red |
| Construction | Heavy-Duty — impact-resistant PPC shell |
| Cold Storage Suitability | Yes — suitable at -20°C |
| Sterility | Non-Sterile |
| Pack Size | 5/Pack |
| Country of Origin | USA (California) |
Applications
- Pathology consultation submissions — 25-slide capacity accommodates a complete case set of H&E plus multiple IHC stains across several levels
- Inter-laboratory and courier slide transport where shell breakage of standard styrenic boxes is an unacceptable risk for irreplaceable tissue sections
- Cold-chain distribution of immunofluorescence frozen sections and cryostat sections requiring sub-zero temperature maintenance through the shipping chain
- Frozen slide archive storage at -20°C for cryostat and immunofluorescence preparations
- Transport of fragile FISH preparations, coverslipped IHC sections, and immunofluorescence slides where coverslip-edge chipping or reagent transfer between slides would compromise the diagnostic preparation
- Priority or STAT case identification and routing within pathology departments — red shell provides immediate visual triage
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) | Good — short-term contact |
| Cold storage at -20°C | Suitable — PPC retains impact resistance at sub-zero temperatures |
| Chlorinated solvents (xylene, chloroform) | Not recommended |
| Aromatic solvents (toluene) | Not recommended |
Quality & Procurement
Made in USA (California), these Caplugs® Evergreen slide boxes are manufactured under ISO 9001 quality management from BPA-free, phthalate-free PPC resin. The heavy-duty PPC construction is the defining upgrade over standard styrenic slide boxes — the shell resists cracking under the drop and compression loads common in courier and postal sorting environments. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, typically same business day for stocking items, with volume pricing available for institutional pathology departments, reference laboratories, and biobank programs.
Frequently Asked Questions
Why choose PPC over a standard polystyrene slide box for courier submissions?
Polypropylene Copolymer is significantly more impact-resistant than standard styrenic thermoplastic slide boxes. PPC absorbs the drop and compression forces typical of courier sorting without shell cracking — critical when the slides inside are irreplaceable diagnostic tissue sections or archival preparations.
What does the foam-lined base actually do for the slides?
The foam base holds each slide in an individual friction-retention pocket, preventing slide-to-slide contact during transport. Slides seat cleanly and release at the destination without label abrasion, coverslip disturbance, or mounting medium transfer — particularly important for fragile FISH preparations, IHC sections, and immunofluorescence slides.
Are these boxes suitable for frozen slide storage or cold-chain shipping?
Yes. PPC retains its impact-resistant properties at -20°C, making these boxes suitable for frozen slide storage and cold-chain distribution programs for cryostat sections and immunofluorescence frozen sections that must be maintained at sub-zero temperatures through the shipping chain.
What does the red color indicate, and are other colors available?
Red is conventionally used in pathology routing systems to designate priority, STAT, or urgent consultation cases requiring expedited review. These boxes are also available in blue (258-6025-B30) and white (258-6025-W30) for color-coding by case type, department, or priority level.