20 mL Histo-Click™ Specimen Containers with Blue Snap-Top Caps — PPC, Non-Sterile, 500/Bag (240-7020-B80)
The Caplugs® Evergreen Histo-Click™ line delivers 20 mL polypropylene copolymer (PPC) specimen containers engineered specifically for histopathology tissue collection, formalin fixation, and cytology workflows. Part number 240-7020-B80 ships unassembled — 500 natural-body containers and 500 blue snap-top caps per bag — so each unit arrives ready for point-of-use assembly, pre-labeling, or barcode application before capping. The click-top closure engages and releases with a single thumb press, eliminating the two-handed screw-threading motion that slows throughput in gowned and double-gloved surgical or grossing environments.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-7020-B80 |
| Sub-Brand | Histo-Click™ (Caplugs® Evergreen) |
| Volume | 20 mL |
| Closure Type | Click-Top Snap Lid — one-hand operation |
| Tube Material | Polypropylene Copolymer (PPC) |
| Tube Color | Natural (clear) |
| Cap Material | Polypropylene Copolymer (PPC) |
| Cap Color | Blue |
| Formalin Compatibility | Compatible with 10% neutral buffered formalin (NBF) |
| Assembly State | Unassembled — 500 containers + 500 caps per bag |
| Sterility | Non-Sterile |
| Pack Size | 500/Bag |
| BPA / Phthalates | BPA-free; phthalate-free |
| Country of Origin | USA (California) |
Applications
- Histopathology tissue collection and 10% NBF formalin fixation of gross tissue fragments and core needle biopsies
- Cytology specimen collection, including fine needle aspirate washes, cell brushing suspensions, and lavage fluid
- Color-sorted batch processing on grossing benches, where blue caps designate formalin-fixed tissue specimens by convention
- High-volume pathology cores processing 50–500+ specimens per day, where one-hand click-top operation reduces procedural bottlenecks
- Pre-labeled or barcoded LIS workflows, enabled by the unassembled format that allows label application before capping
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| 10% Neutral Buffered Formalin (NBF) | Excellent — purpose-compatible |
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) | Good — short-term contact |
| Acetone / chlorinated solvents / aromatics | Not recommended |
Quality & Procurement
Made in USA (California), these Histo-Click™ containers are produced from BPA-free, phthalate-free polypropylene copolymer resin under Caplugs® Evergreen's quality management program. The natural tube body allows direct visual inspection of specimen volume and morphology without removing the container from the processing tray. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory; tiered pricing is available for high-volume pathology departments, hospital systems, and grant-funded research institutions. Companion SKUs with green (240-7020-G80) and white (240-7020-W80) caps are also available to support full color-coded specimen-type programs.
Frequently Asked Questions
Are these specimen containers sterile?
No — the Histo-Click™ 240-7020-B80 containers are supplied non-sterile, which is standard for formalin fixation and histopathology tissue collection workflows where sterility is not a requirement.
Why does the bag ship unassembled?
The unassembled format lets technicians apply printed labels or barcode stickers to the container body before snapping on the cap, keeping labels flat and readable throughout processing. It also allows labs to stage containers and caps separately at the collection bench.
Is polypropylene copolymer (PPC) truly compatible with 10% formalin?
Yes. PPC resists the aldehyde chemistry of 10% neutral buffered formalin at standard tissue fixation concentrations, making it the polymer of choice for formalin specimen containers. Avoid storing strong organic solvents such as acetone or chlorinated compounds in these containers.
Why are the caps blue, and can I order other cap colors?
Blue is a widely adopted convention in histopathology for identifying formalin-fixed tissue specimens, supporting color-sorted batch processing without additional labeling. If your lab uses a different color-coding scheme, companion SKUs with green and white caps are available from LabSupplies.com.