25 mL Hematology Dilution Vials — Polystyrene, Natural, Open Top, 50/Bag (201-5266-01S)
These 25 mL open-top polystyrene dilution vials are designed for automated and manual CBC/DIFF pre-dilution workflows on high-throughput hematology analyzers, supplied non-sterile in 50/Bag format without caps for labs that manage closures separately through their dispenser system or independent cap sourcing. The natural (clear) polystyrene construction provides the optical clarity needed for visual sample inspection before aspiration, while the 25 mL capacity delivers adequate headspace for inversion mixing without spillage and accommodates the aspiration dead volume required by platforms running 60–120 samples per hour. Part number 201-5266-01S is a direct match to the open-top vial format specified by Beckman Coulter, Abbott, and other major hematology analyzer platforms.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 201-5266-01S |
| Capacity | 25 mL |
| Geometry | Cylindrical, Open Top |
| Material | Polystyrene (PS) |
| Color | Natural (clear) |
| Sterility | Non-Sterile |
| Pack Size | 50/Bag (Vials only — no caps included) |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- CBC/DIFF pre-dilution: receives a precisely metered blood aliquot and isotonic diluent (typically 1:224 to 1:500 depending on the analyzer and panel) prior to automated aspiration
- High-throughput clinical hematology labs running 60–120 samples per hour where caps are dispensed or managed by the analyzer's dilution arm
- Manual bench dilution and inversion-mixing protocols requiring a 25 mL cylindrical vial format
- Cost-optimized procurement workflows where vials and caps are sourced independently or caps are reused within the dilution rack system
- Pre-dilution sample preparation for impedance-based cell-counting platforms where PS minimizes background optical interference
Compatibility
These 25 mL open-top dilution vials are compatible with a broad range of automated hematology platforms. The table below lists confirmed compatible instrument families; always verify diluent dispensing volume and carrier/tube-rack dimensions against your specific analyzer model and site SOP before switching from OEM supply.
| Manufacturer | Platform / Series | Notes |
|---|---|---|
| Sysmex | XN-1000 / XN-2000 / XN-3000 / XN-9000 series | Standard dilution vial position; verify dispenser arm clearance |
| Sysmex | XE-2100 / XE-5000 (legacy) | Compatible with pre-dilution tube format |
| Beckman Coulter | DxH 500 / DxH 800 / DxH 900 | 25 mL vial for manual pre-dilution workflow |
| Abbott | CELL-DYN Ruby / Sapphire / Emerald | Manual dilution prior to CELL-DYN aspiration |
| Mindray | BC-5000 / BC-6000 / BC-6800 / BC-6900 | Pre-dilution workflow; verify tube-carrier fit |
| Horiba | Yumizen H550 / H560 / H1500 / H2500 | 25 mL sample preparation vial |
| Nihon Kohden | Celltac G MEK-9100 | Standard pre-dilution format |
| Manual Bench | Any inversion-mixing protocol | Any 25 mL vial-based workflow |
Chemical Resistance
The following compatibility reference applies to polystyrene (PS) at typical clinical concentrations and short-term contact exposures. Verify compatibility for any novel reagent before routine use.
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous isotonic diluents (saline-based) | Excellent |
| Hematology lysing reagents (aqueous, dilute) | Good — short-term contact |
| Mild aqueous detergent washes | Good — short-term contact |
| Ethanol >70% / isopropanol | Not recommended |
| Acetone / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Autoclaving | Not recommended — PS is not autoclavable |
Quality & Procurement
Made in USA, these Caplugs® Evergreen dilution vials are produced from FDA-compliant, food-contact-grade polystyrene resin under ISO 9001 quality management controls, and are certified BPA-free, phthalate-free, and latex-free. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory — most stocking SKUs ship the same business day. Sibling pack formats are available: 201-5266-050 (50/Tray with caps assembled) and 201-5266-05K (144/Bag with caps unassembled), giving procurement teams flexibility to match pack format and cap-management strategy to their workflow. Volume pricing is available for institutional, hospital, and grant-funded laboratories purchasing ten or more bags.
Frequently Asked Questions
Do these vials come with caps?
No — the 201-5266-01S pack format is vials only (50/Bag, no caps included). This is intentional for labs where closures are dispensed automatically by the analyzer's dilution arm, or where caps are sourced separately for cost optimization. If you require vials with caps pre-assembled, the 201-5266-050 (50/Tray with caps) format is available.
Are these vials compatible with Sysmex XN-series analyzers as well as Beckman Coulter DxH platforms?
Yes — this 25 mL open-top PS vial format is used across multiple hematology platforms including Sysmex XN-series, Beckman Coulter DxH 500/800/900, Abbott CELL-DYN, Mindray BC-series, Horiba Yumizen, and Nihon Kohden Celltac G instruments. Always verify diluent dispensing volume and tube-carrier dimensions for your specific analyzer model before switching from OEM consumables.
Can these vials be autoclaved or reused after sample contact?
No — polystyrene is not autoclavable and these vials are intended for single-use sample dilution. Reuse after blood or reagent contact is not recommended, as PS is not resistant to the alcohols or detergents typically used for decontamination at effective concentrations.
What dilution ratios are these vials designed to support?
The 25 mL capacity accommodates the typical 1:224 to 1:500 blood-to-diluent ratios used in CBC/DIFF pre-dilution workflows, providing sufficient headspace for inversion mixing without spillage and adequate dead volume for high-throughput analyzer probe aspiration.