1.0 mL Tethered-Cap Sample Cups for Roche / Hitachi Analyzers — HDPE, Natural, 1,000/Bag
These 1.0 mL tapered flat-bottom sample cups are precision-molded from virgin High-Density Polyethylene (HDPE) and feature a permanently attached hinged cap that can never be misplaced during high-throughput rack handling. Manufactured to the dimensional specification of Roche / Hitachi autoanalyzer flat-bottom cup positions, part number 127-1758-020 ships in bags of 1,000 and is supplied non-sterile for clinical chemistry and open-system analyzer workflows. The natural HDPE color provides direct visual sample volume assessment while the material's inherent rigidity maintains consistent tapered flat-bottom geometry under centrifugation and repeated rack cycling.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 127-1758-020 |
| Volume | 1.0 mL |
| Geometry | Tapered Flat Bottom |
| Cap Style | Tethered — permanently attached, hinged closure |
| Material | High-Density Polyethylene (HDPE) |
| Color | Natural |
| Sterility | Non-Sterile |
| Pack Size | 1,000 / Bag |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA |
Applications
- Clinical chemistry sample preparation and presentation on Roche / Hitachi autoanalyzers
- Open-system chemistry analyzers requiring tapered flat-bottom cup geometry
- High-throughput laboratory workflows where tethered caps eliminate cap-loss events and reduce sample identification errors
- Serum, plasma, and EDTA whole-blood aliquoting prior to automated analysis
- Color-coded sample routing when used alongside the blue (127-1758-B20) and yellow (127-1758-Y20) variants in the same 127-1758 family
Compatibility
These cups are engineered to the Roche / Hitachi tapered flat-bottom cup specification, with primary compatibility confirmed for the Hitachi 717, 736, 737, and 747 autoanalyzers. They are also a verified fit for the Roche cobas c 111, cobas c 311, cobas c 501, and cobas c 502 platforms, where the tethered cap design specifically prevents cap-loss incidents during high-throughput rack loading and unloading. The tapered flat-bottom geometry has also been reported to fit flat-cup positions on Beckman Coulter CX3, CX4, CX5 Delta, DxC 600i, and DxC 700i analyzers; Siemens Healthineers Dimension RxL, XL, and Vista instruments (where flat-bottom cup positions are available); and Olympus / Beckman AU400, AU600, and AU640 platforms. Laboratories switching from OEM supply should verify cup-well dimensions against their specific instrument configuration prior to full deployment.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| EDTA and standard clinical preservatives | Excellent |
| Ethanol and isopropanol | Good — short-term contact |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen sample cups are molded from virgin HDPE resin that is BPA-free and free of phthalate plasticizers, supporting compliance with laboratory reagent-contact material requirements. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered volume pricing available for clinical laboratories, hospital systems, and institutional procurement programs. The 127-1758 family spans three colors — Natural, Blue, and Yellow — enabling single-vendor color-coded workflow procurement without introducing multi-source dimensional variability on the same analyzer.
Frequently Asked Questions
What makes the tethered cap worth specifying over a separate loose cap?
The cap is permanently hinged to the cup body and cannot be separated, which eliminates cap-loss events during high-volume rack loading and unloading. On busy clinical chemistry benches processing hundreds of samples per shift, lost caps are a real source of delays, contamination risk, and potential sample mix-up — the tethered design removes that failure mode entirely.
Are these cups compatible with Roche cobas analyzers as well as the older Hitachi platforms?
Yes. The tapered flat-bottom geometry targets the Hitachi 717, 736, 737, and 747 series as the primary specification, and compatibility has also been confirmed for the Roche cobas c 111, cobas c 311, cobas c 501, and cobas c 502. For any platform not listed, verify the cup-well dimensions against your instrument manual before transitioning from OEM supply.
Are these cups sterile, and can they be autoclaved?
These cups are supplied non-sterile, which is appropriate for the vast majority of clinical chemistry autoanalyzer applications. HDPE is generally not recommended for autoclave sterilization; if sterile sample vessels are required for your workflow, please contact our technical team for guidance on alternative formats.
Can I mix Natural, Blue, and Yellow cups from the 127-1758 family on the same analyzer?
Yes. All three colors — Natural (127-1758-020), Blue (127-1758-B20), and Yellow (127-1758-Y20) — are produced to the same dimensional specification from the same HDPE material. Sourcing all three through LabSupplies.com as a single authorized dealer eliminates the dimensional variability risk that can arise when mixing cups from different manufacturers or product lines.