Tissue Embedding Rings, PS, Pink — 258-4011-P10 | 500/Bag | Caplugs® Evergreen

Tissue Embedding Rings — High Impact Polystyrene (HIPS), Pink, 500/Bag (258-4011-P10)

These pink High Impact Polystyrene (HIPS) tissue embedding rings are designed to hold the tissue cassette base in correct orientation within the embedding mold during paraffin infiltration at standard histology embedding center temperatures of 56–65°C. Supplied non-sterile in bags of 500, part number 258-4011-P10 is a high-throughput consumable for surgical pathology cores, clinical histology labs, and research pathology facilities that process large block volumes per shift. The precise dimensional fit with standard histology cassette bases ensures consistent tissue orientation and paraffin block face geometry — directly influencing section quality, ribbon continuity, and the number of diagnostic-quality levels obtainable per block.

Technical Specifications

Applications

• Surgical biopsy embedding — prostate needle cores, cervical biopsies, and skin punch specimens where the ring holds cassette-base position during paraffin infiltration
• Endoscopic biopsy processing — GI mucosal, esophageal, and gastric specimens
• Endometrial curettings and gynecologic specimens aligned with pink color-coded embedding protocols
• High-volume surgical pathology cores processing hundreds of paraffin blocks per shift
• Color-coded specimen management programs that assign ring colors by tissue category to reduce orientation errors and improve block traceability

Chemical Resistance

Quality & Procurement

Made in USA, these Caplugs® Evergreen embedding rings are manufactured from a rubber-toughened High Impact Polystyrene matrix that withstands the thermal cycling, xylene exposure, and mechanical handling forces of routine histology processing without the brittleness associated with standard polystyrene. The pink pigmentation is compounded directly into the HIPS matrix — not applied as a surface coating — ensuring permanent color retention through the full histology solvent sequence. These rings are BPA-free and contain no phthalate plasticizers. LabSupplies.com is an authorized dealer and ships from USA inventory, with tiered pricing available for high-volume surgical pathology departments and institutional procurement programs. The complete Caplugs® Evergreen embedding ring color range — White (258-4010-W10), Blue (258-4012-B10), Green (258-4013-G10), and Yellow (258-4014-Y10) — is available from a single vendor for full color-scheme procurement.

Frequently Asked Questions

Why are HIPS embedding rings preferred over standard polystyrene rings?
High Impact Polystyrene incorporates a rubber-toughened polymer matrix that resists the cracking and brittleness that standard PS can exhibit under repeated thermal cycling and xylene exposure at histology embedding temperatures. HIPS maintains structural integrity through cassette processing, paraffin embedding, and block trimming workflows.

What does the pink color signify in a color-coded embedding protocol?
Pink rings are commonly used in histology labs to designate gynecologic and genitourinary specimens — such as cervical biopsies, endometrial curettings, and prostatic needle cores — helping staff quickly identify specimen categories and reducing the risk of orientation errors during high-volume embedding runs.

Are these embedding rings compatible with all standard tissue cassette bases?
These rings are designed to fit standard histology cassette bases and maintain correct cassette orientation within the embedding mold. If your lab uses non-standard cassette dimensions, verify fit against your cassette supplier's specifications before committing to a large-volume order.

Are these rings sterile, and can they be reused?
These embedding rings are supplied non-sterile and are intended for single-use disposable workflows consistent with standard histopathology practice. Reuse is not recommended, as solvent and thermal exposure during processing may compromise dimensional integrity and color retention.