Boxes, PPC, Blue — 258-6025-B30 | 5/Pack | Caplugs® Evergreen

Heavy-Duty 25-Slide Storage Mailing Boxes with Foam Lined Base, PPC, Blue — 258-6025-B30 | 5/Pack

Technical Narrative

The Caplugs® Evergreen is a heavy-duty 25-slide storage and mailing box constructed from Polypropylene Copolymer (PPC) with a foam-lined base — the step up from standard styrenic plastic slide boxes for pathology consultation submissions, inter-laboratory slide transport, and archive programs where shell breakage during courier handling is an unacceptable risk for irreplaceable tissue sections. PPC construction provides significantly greater impact resistance than standard styrenic thermoplastic slide boxes — the defining "heavy-duty" characteristic. PPC absorbs package drop and compression forces without shell cracking, protecting slides from the breakage events that standard plastic slide boxes are vulnerable to in courier sorting and postal handling environments. Blue is widely used to designate active consultation cases, current accession batches, or specific diagnostic categories in multi-color slide box systems. The foam base provides individual slide position friction retention without adhesive contact — slides seat cleanly and release at the destination without label abrasion, coverslip disturbance, or mounting medium transfer.

25-slide capacity matches the typical complete pathology consultation case set — H&E plus multiple IHC stains across several levels. The foam liner's individual slide pockets prevent slide-to-slide contact during transport — critical for fragile FISH preparations, coverslipped IHC sections, and immunofluorescence slides where any coverslip-edge chipping or reagent transfer between slides would compromise the diagnostic preparation. PPC's low-temperature stability makes this box suitable for -20°C frozen slide storage, supporting cold-chain slide distribution programs for immunofluorescence frozen sections and cryostat sections where glass slides must be maintained at sub-zero temperatures through the shipping chain.

At $17.26 per 5/Pack — $3.4519 per box — the delivers heavy-duty PPC slide protection at a per-box cost that supports single-use-per-case or per-batch shipping programs. Also available: 258-6025-R30 (Red, $17.26/Pack); 258-6025-W30 (White, $17.26/Pack). For higher-volume batch shipping, see the 100-slide format (258-6188 family).

Technical Specifications — Caplugs® Evergreen

Slide Transport & Storage Workflow Compatibility —

25-slide capacity matches the typical complete pathology consultation case set — H&E plus multiple IHC stains across several levels. The blue shell color supports blue is widely used to designate active consultation cases, current accession batches, or specific diagnostic categories in multi-color slide box systems. Compatible workflows:

Fits standard 25 × 75 mm microscope slides. Foam base provides individual slide position retention without adhesive. For biological specimen postal compliance, confirm IATA P650 secondary containment requirements for your specimen type.

Chemical & Environmental Resistance — Polypropylene Copolymer (PPC)

PPC shell provides good resistance to incidental reagent contact from stained slides. Foam lining is inert to standard aqueous staining reagents. Not intended for solvent immersion.

Pathology & Research Laboratory Applications

The serves anatomic pathology practices submitting single-case consultation sets to academic and subspecialty pathologists; cytopathology and hematopathology slide transport programs; FISH and molecular cytogenetics slide distribution; IHC panel outsourcing and second-opinion shipping; forensic pathology chain-of-custody slide transport; tumor board and multidisciplinary team slide preparation; research cohort slide distribution programs; and any pathology setting requiring heavy-duty PPC shell protection for irreplaceable tissue sections during courier and postal transit.

U.S. Manufacturing, Quality & Institutional Procurement

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

Frequently Asked Questions — Caplugs® Evergreen

What is the difference between this heavy-duty PPC box and a standard styrenic thermoplastic slide box?

The key difference is shell construction. Standard styrenic thermoplastic slide boxes (like the Caplugs® Evergreen 258-5811) are adequate for routine consultation shipping but can crack under the compressive forces of courier sorting equipment and package drop testing. PPC (Polypropylene Copolymer) provides significantly greater impact resistance — the shell flexes under impact rather than fracturing. Choose the heavy-duty PPC format for high-value or irreplaceable tissue sections, FISH preparations, fragile IHC sections, and any shipment where slide breakage inside the box would be unrecoverable.

What slide sizes fit the box?

Designed for standard 25 × 75 × 1 mm microscope slides — the universal format for histopathology, cytology, IHC, FISH, and research. Non-standard dimensions (50 × 75 mm large-format, 25 × 50 mm small-format) will not fit. The foam base is dimensioned for standard 1 mm thick slides — thicker slides (e.g., some electron microscopy grids or mounted sections) should be validated with a sample box before bulk purchase.

Can the box be used for cold-chain or frozen slide transport?

Yes. PPC construction maintains structural integrity at -20°C, making the suitable for cold-chain slide distribution — including immunofluorescence frozen sections, cryostat sections, and slides that must be maintained at frozen temperatures during transport. Standard styrenic thermoplastic becomes brittle at sub-zero temperatures and is not recommended for frozen slide shipping. For liquid nitrogen temperature slide transport, use purpose-built cryogenic slide containers.