Diagnostic Consumables
Centrifuge Tubes
Molded centrifuge tubes and closures for sample preparation, where the part has to hold its shape under spin load and still seal afterwards.
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Diagnostic Consumables
Sample Tube Assemblies
Multi part sample tube assemblies combining a tube, an insert and a closure.
Product Overview
What This Component Is
Multi part sample tube assemblies combining a tube, an insert and a closure. The individual parts are simple, and the whole value of the program sits in whether the three of them fit each other every single lot.
Key Benefits
- Every cavity of the assembly held in one plant
- Fit checked on assembled parts rather than on individual dimensions
- ERP records tie each shipped lot to the tool and machine that made it
Molded on tooling we cut ourselves in Shenzhen. Certification covers the site doing the work: ISO 9001:2015 and ISO 13485:2016.
Who It Is For
- Diagnostic kit assemblers
- Sample logistics suppliers
- OEMs consolidating a multi part consumable
Problems It Solves
- Three suppliers and no single owner of the fit
- Assemblies that pass part inspection and fail at the filling line
- Traceability that stops at the shipment rather than the cavity
Application Scenarios
- Sample collection kits
- Reagent packaged assemblies
- Transport and storage of prepared samples
Technical Features
How It Is Engineered
- Tolerance stack reviewed across the assembly before any steel is cut
- Assembly fit sampled as a set at tool release
- Lot, tool and machine recorded for every shipment
Materials
- Medical grade resin selected against your specification rather than substituted by us
- Customer nominated grades accepted where a device master record already fixes the material
- Colourants and additives confirmed in writing before the first sampling run
Specifications
Documented Figures
| Part Family | Multi part tube assemblies |
|---|---|
| Traceability | Lot, tool and machine recorded in ERP |
| Process | Injection molding on in house built tooling |
| Mold Machining Accuracy | 0.002-0.005 mm on ground surfaces |
| Molding Environment | ISO 8 clean room or conventional workshop |
| Quality System | ISO 9001:2015 and ISO 13485:2016 |
| Country Of Manufacture | Shenzhen, China |
Figures above are plant and tooling capabilities recorded on our own site. Part level tolerances are confirmed against your drawing at mold flow review rather than quoted as a blanket number.
Manufacturing Process
- Mold design review
- Steel machining and EDM
- Mold trial and cavity sampling
- Clean room or conventional molding
- In process dimensional check
- Clean room packing
Quality Control
- Cavity by cavity dimensional sampling before a tool is released
- In process checks during the molding run rather than only at the end
- ERP system records the lot, tool and machine behind every shipment
Customization Options
- Cavitation sized to your annual forecast instead of a fixed standard tool
- Colour and resin grade to your specification
- Clean room packing format and labelling agreed before the first shipment
Comparison
Compared With Other Routes
| Assembling parts from three molders | Three tolerance stacks that have never met. One plant reviews the stack once and corrects it in one place. |
|---|---|
| Buying a finished assembly from a trader | A trader cannot change a cavity. Owning the tooling relationship means a fit problem has an actual fix. |
Use Guide
How To Handle It
- Qualify the assembly as a set, not part by part
- Record the tool number from the carton label in your incoming inspection
- Re qualify after any tool repair, however minor it sounds
Questions Buyers Ask
Questions About Sample Tube Assemblies
Can you hold all parts of an assembly?
Yes, and we ask for it. Splitting an assembly across plants is the single most common reason these programs go wrong.
What traceability do you provide?
Our ERP system records the lot, the tool and the machine behind every shipment, so a question about a specific carton has an answer.
Do you assemble the parts before shipping?
We can pack components together in the clean room. Full assembly scope is agreed in writing per project rather than assumed.
Internal Links
Related Components
Diagnostic Consumables
Specimen Containers
Graduated specimen containers with printed scales and biohazard marking, molded for collection and transport of clinical samples.
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Diagnostic Consumables
Vial Caps And Seals
Small molded caps and seals for vials and sample tubes.
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Cases And Guides For This Component
Case Study
Water Tightness Validation On A Container And Closure Pair
A container and a closure can each pass dimensional inspection and still leak together, because the seal is a property of the pair and not of either part alone.
Read The Case →Quote This Component
Send the drawing, the annual volume and the resin your device file specifies. You will get a feasibility review rather than a price with conditions buried in it.