Caplugs® Evergreen
4 mL Sample Cups, LDPE, Natural, Roche/Beckman Compatible — 300-1999-020 | 1000/Bag | Caplugs® Evergreen
4 mL Sample Cups, LDPE, Natural, Roche/Beckman Compatible — 300-1999-020 | 1000/Bag | Caplugs® Evergreen
Couldn't load pickup availability
Perforated Top Sample Cup Caps, LDPE, Natural — 300-1999-020 | 1000/Bag
| Quick Reference — 300-1999-020 | |
|---|---|
| Cap Type | Perforated Top |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural |
| Cup Compat. | Fits Caplugs® Evergreen 4 mL round-bottom sample cups |
| Probe Access | ✓ Direct probe aspiration through cap |
| Sealing | Partial — perforations allow evaporation control |
| Sterility | Non-Sterile |
| Pack Size | 1000 / Bag |
| Price | $33.33 / Bag ($0.0334 / cap) |
Technical Narrative
The Caplugs® Evergreen is a natural Low-Density Polyethylene (LDPE) perforated top sample cup cap — the direct-aspiration closure for Caplugs® Evergreen 4 mL sample cups in auto-analyzer and high-throughput clinical laboratory workflows where removing the cap before every probe aspiration creates a throughput bottleneck and increases aerosol exposure risk. The perforated top allows analyzer aspiration probes to pierce directly through the cap into the sample cup contents — eliminating the decapping step in probe-based auto-analyzer loading workflows including Roche Cobas, Beckman AU/DxC, Siemens Atellica, and Abbott Alinity chemistry analyzer series. The perforations also provide controlled evaporation during refrigerated staging — reducing sample concentration change during pre-analytical hold times versus fully open cups without the complete evaporation prevention of a flat cap.
LDPE construction provides the flexibility required for consistent snap-on retention across the full temperature range of clinical laboratory sample cup handling — room temperature processing, 4°C refrigerated staging, and -20°C frozen storage. LDPE flex retention is the defining property for sample cup caps: rigid materials crack under the repeated snap-on/snap-off cycles of high-volume clinical workflows, while LDPE maintains flexible snap engagement across thousands of cap applications without fracture or retention loss. LDPE's chemical inertness to urine, serum, plasma, and standard assay diluents ensures no cap material leaching into specimen contents.
At $33.33 per 1000/Bag — $0.0334 per cap — the delivers perforated probe-pierce cap coverage at per-cap economics for high-volume auto-analyzer programs. For workflows requiring complete sealed closure before probe aspiration, see flat top caps: 300-1006-020 (Flat Top Natural, $25.96/1000); 300-1006-B20 (Flat Top Blue, $25.96/1000).
Technical Specifications — Caplugs® Evergreen
| Specification | Value |
|---|---|
| Part Number | |
| Caplugs Item # | 3001999020E1 |
| Cap Type | Perforated Top |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural |
| Cup Compat. | Caplugs® Evergreen 4 mL round-bottom and flat-bottom sample cups |
| Probe Access | ✓ Perforated top — probe-pierce without removal |
| Sealing | Partial closure — perforations control evaporation |
| Sterility | Non-Sterile |
| Pack Size | 1000 / Bag |
| BPA/Phthalate | BPA-free; no phthalate plasticizers |
| Country of Origin | Made in U.S.A. (California) |
Perforated Top Cap Application Compatibility —
The perforated top LDPE cap fits Caplugs® Evergreen 4 mL sample cups for the following workflows:
| Application | Specimen / Use | Notes |
|---|---|---|
| Direct analyzer aspiration | Probe-based auto-analyzers (Cobas, Roche, AU) | Perforated top allows probe aspiration without cap removal |
| Sealed probe-pierce workflow | Aspirating probes that pierce through the cap | Eliminates uncapping step — analyzer probe pierces directly |
| Evaporation-controlled storage | Capped cups with limited evaporation during storage | Perforations allow controlled evaporation for analyzer compatibility |
| Refrigerated cup staging | Pre-loaded sample cups staged for analyzer run | Perforated cap reduces carryover vs fully open cups during staging |
| Biofluid specimen handling | Urine, serum, plasma in closed analyzer workflow | Perforated cap supports closed-tube workflow without open cups |
| Middleware workflow integration | Sample cup with cap in LIS-integrated batch runs | Perforated cap compatible with auto-loader cup-handling systems |
| Reduced contamination workflow | High-throughput lab with covered sample staging | Perforated cap reduces aerosol exposure vs fully open sample cups |
| CAP/CLIA accreditation workflows | Closed-system specimen handling documentation | Perforated cap supports closed-system pre-analytical documentation |
Perforated caps allow probe aspiration without cap removal — confirm probe tip diameter against perforation diameter before use.
Chemical Resistance — Low-Density Polyethylene (LDPE)
LDPE provides excellent flexibility, snap-on retention, and broad aqueous specimen compatibility. Not autoclave-compatible.
| Reagent / Condition | Compatibility |
|---|---|
| Urine (all types) | ✓ Excellent |
| Serum / plasma | ✓ Excellent |
| Aqueous buffers | ✓ Excellent |
| Dilute acids (<10%) | ✓ Good |
| Dilute alkalies (pH <12) | ✓ Good |
| Short-chain alcohols (brief) | ✓ Good |
| DMSO (≤10%) | ✓ Good |
| Concentrated organic solvents | ✗ Not recommended |
| Autoclave (121°C) | ✗ Not compatible — LDPE softens |
| UV sterilization | ✓ Compatible |
Laboratory Applications
The serves clinical chemistry and immunoassay laboratory programs using probe-based auto-analyzers with 4 mL sample cups; high-throughput clinical laboratory programs reducing decapping throughput bottlenecks; laboratories running CAP/CLIA-accredited closed-system specimen handling protocols; reference labs running batch auto-analyzer loads with refrigerated pre-staged capped sample cups; and any auto-analyzer workflow where probe-pierce-without-removal capability is a workflow requirement.
U.S. Manufacturing, Quality & Institutional Procurement
Every Caplugs® Evergreen lot is precision-molded at our California manufacturing facility and subject to rigorous dimensional inspection and material purity verification. We supply reference laboratories, hospital systems, 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 the perforated top cap and the flat top cap?
Flat top caps (300-1006-020 Natural, 300-1006-B20 Blue, 300-1006-R20 Red) provide complete sealed closure — probe aspiration requires cap removal first. Perforated top caps have pre-made perforations that allow analyzer aspiration probes to pierce directly through the cap without removal. Choose perforated caps for probe-pierce auto-analyzer workflows where eliminating the decapping step increases throughput. Choose flat caps for complete evaporation prevention and storage/transport workflows where probe access is not required.
Which auto-analyzer probe sizes are compatible with the perforated cap?
The perforation diameter in the is designed for standard auto-analyzer aspiration probe sizes in the 1.5–2.5 mm diameter range — the standard for Roche Cobas (c, e, p series), Beckman AU/DxC, Siemens Atellica, and Abbott Alinity chemistry analyzers. Always validate probe-to-perforation fit with a sample cap before large-volume purchase if your analyzer uses non-standard probe dimensions.
Are the perforated caps compatible with pneumatic tube transport of sample cups?
LDPE perforated caps are compatible with pneumatic tube transport of sample cups — LDPE flex retention maintains snap-on engagement through the acceleration and deceleration forces of pneumatic tube systems. The perforations may allow minor evaporation during extended transport — for long pneumatic tube runs where evaporation is a concern, flat top caps provide better evaporation prevention during transport, with perforated caps applied before analyzer loading.
Share
