Caplugs® Evergreen
Cryo Vial Caps, Screw Caps, HDPE, Yellow — 300-3900-Y2K | 1000/Bag | Caplugs® Evergreen
Cryo Vial Caps, Screw Caps, HDPE, Yellow — 300-3900-Y2K | 1000/Bag | Caplugs® Evergreen
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CryoSure® Cryogenic Vial Caps, HDPE, Yellow — 300-3900-Y2K | 1000/Bag
| Quick Reference — 300-3900-Y2K | |
|---|---|
| Sub-brand | CryoSure® (Caplugs® Evergreen) |
| Material | High-Density Polyethylene (HDPE) |
| Color | Yellow |
| Cryo Rating | ✓ LN₂ vapor phase (-196°C) and immersion |
| Color Use | Yellow CryoSure® caps correspond to the CLSI H3 SPS/ACD conv |
| Yellow pair | 300-3900-Y20 — same color, 200/Bag ($17.71) |
| Autoclave | ✓ Compatible (121°C) |
| Pack Size | 1000/Bag |
| Price | $84.87 / Bag ($0.0849 / cap) |
Technical Narrative
The Caplugs® Evergreen CryoSure® is a yellow HDPE screw cap for CryoSure® cryogenic vials, rated for LN₂ vapor phase (-196°C), LN₂ immersion, and -80°C mechanical freezer storage. Yellow CryoSure® caps correspond to the CLSI H3 SPS/ACD convention — designating blood culture and ACD-preserved cryogenic specimens.
This 1000/Bag bulk format ($84.87, $0.0849/cap) saves ~4% per cap versus the 200-count trial pack (300-3900-Y20, 200/Bag ($17.71)). Order the 200-count format first to confirm fit and routing protocol.
At $84.87 per 1000/Bag — $0.0849 per cap.
Technical Specifications — Caplugs® Evergreen
| Specification | Value |
|---|---|
| Part Number | |
| Caplugs Item # | 3003900Y2KE1 |
| Sub-brand | CryoSure® (Caplugs® Evergreen) |
| Material | High-Density Polyethylene (HDPE) |
| Color | Yellow |
| Cryo Rating | LN₂ vapor + immersion (-196°C) |
| Storage | ✓ -80°C and -196°C |
| Autoclave | ✓ 121°C / 15 psi |
| Pack Size | 1000/Bag |
| BPA/Phthalate | BPA-free; no phthalate plasticizers |
| Country of Origin | Made in U.S.A. (California) |
CryoSure® Cap Compatibility — Yellow
The yellow CryoSure® cap fits CryoSure® cryogenic vials for:
| Application | Use / Storage | Notes |
|---|---|---|
| Cryogenic vial capping | CryoSure® cryogenic vials | HDPE for LN₂ vapor + immersion |
| LN₂ vapor phase | -196°C biobank archive | CryoSure® grade thread integrity |
| -80°C archive | Mechanical freezer biorepository | HDPE cryo stability |
| Color-coded routing | Multi-specimen cryo box programs | 12 CryoSure® colors |
| Cell line cryo | DMSO-protected cell line archives | HDPE DMSO compatible |
CryoSure® caps are for LN₂ archive. Do not use standard HDPE tube caps at LN₂ temperatures.
Chemical Resistance — HDPE — CryoSure® Grade
CryoSure® HDPE maintains integrity from +121°C autoclave through -196°C LN₂.
| Reagent / Condition | Compatibility |
|---|---|
| Liquid nitrogen (-196°C) | ✓ Engineered for LN₂ vapor + immersion |
| Storage at -80°C | ✓ Excellent — HDPE cryo-toughened |
| DMSO (cryoprotectant conc.) | ✓ Good — 5–10% standard cryo media |
| Aqueous cryoprotectants | ✓ Excellent (FBS, glycerol, Bambanker) |
| Autoclave (121°C) | ✓ Compatible |
| Concentrated organic solvents | ✗ Not recommended |
Complete CryoSure® Cap Range
| Part Number | Color | Pack | Price |
|---|---|---|---|
| 300-3900-020 | Natural | 200/Bag | $17.71 |
| 300-3900-B20 | Blue | 200/Bag | $17.71 |
| 300-3900-DG2K | Dark Green | 1000/Bag | $81.98 |
| 300-3900-E20 | Orange | 200/Bag | $17.71 |
| 300-3900-G20 | Green | 200/Bag | $17.71 |
| 300-3900-G2K | Green | 1000/Bag | $84.87 |
| 300-3900-L20 | Lavender | 200/Bag | $17.71 |
| 300-3900-R20 | Red | 200/Bag | $17.71 |
| 300-3900-R2K | Red | 1000/Bag | $84.87 |
| 300-3900-W20 | White | 200/Bag | $17.71 |
| 300-3900-Y20 | Yellow | 200/Bag | $17.71 |
| Yellow | 1000/Bag | $84.87 |
Laboratory Applications
CryoSure® serves biobank programs archiving yellow color-designated cryogenic vials; cell biology and clinical biorepository programs; and any program requiring yellow HDPE cryo vial caps rated for -196°C LN₂.
U.S. Manufacturing, Quality & Institutional Procurement
Every Caplugs® Evergreen lot is precision-molded at our California manufacturing facility. We supply reference laboratories, hospital systems, and federal procurement offices under institutional pricing programs. Request a free sample below to validate fit before committing to volume.
Frequently Asked Questions — Caplugs® Evergreen
What is the convention for yellow CryoSure® caps?
Yellow CryoSure® caps correspond to the CLSI H3 SPS/ACD convention — designating blood culture and ACD-preserved cryogenic specimens. CryoSure® caps are engineered for -196°C LN₂ — not interchangeable with standard HDPE tube caps.
What is the difference between (1000/Bag) and 300-3900-Y20 (200/Bag)?
Both are identical Yellow CryoSure® HDPE caps. The only difference is pack size.: 1000/Bag at $84.87 ($0.0849/cap). 300-3900-Y20: 200/Bag at $17.71. ~4% savings vs 200-count. Validate fit with 200-count before bulk purchase.
Are CryoSure® caps compatible with LN₂ immersion storage?
Yes. CryoSure® caps are engineered for both LN₂ vapor phase (-196°C) and direct LN₂ immersion. Standard HDPE caps (300-3010, 300-3532, etc.) may not be rated for LN₂ immersion. Do not substitute standard tube caps for LN₂ archive — use CryoSure® caps on CryoSure® vials.
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