Transfer Pipettes And Droppers
Transfer Pipettes
Single use transfer pipettes molded for consistent draw and release.
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Transfer Pipettes And Droppers
Graduated Droppers
Droppers and transfer tubes with moulded graduation detail, for protocols where the user has to see how much was drawn.
Product Overview
What This Component Is
Droppers and transfer tubes with moulded graduation detail, for protocols where the user has to see how much was drawn. The graduation has to be legible against a coloured sample and survive handling, which rules out anything printed on afterwards.
Key Benefits
- Graduation formed in the tool so it cannot rub off
- Legibility reviewed against real sample colours before steel is cut
- Clean room molded for direct sample contact
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
- Field testing product suppliers
- Laboratory consumable brands
Problems It Solves
- Printed graduations that wear off in a kit box
- Scales invisible against dark samples
- Volume markings that are legally part of the protocol but not verified at molding
Application Scenarios
- Measured sample transfer
- Kit protocols with a stated volume step
- Field and point of care sampling
Technical Features
How It Is Engineered
- Graduation detail cut into the cavity
- Mark depth and width chosen for legibility rather than for easy molding
- Volume position verified on sampled parts against the drawing
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 | Graduated droppers and transfer tubes |
|---|---|
| Graduation | Moulded in, not printed |
| 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
| Printed graduation | Print wears, smudges and can be applied slightly off position. A moulded mark is in the same place on every part from that cavity. |
|---|---|
| Ungraduated transfer pipettes | If the protocol names a volume, the user needs to see it. An ungraduated pipette turns a specified step into a guess. |
Use Guide
How To Handle It
- Check legibility against the darkest and the clearest samples you handle
- Verify mark position on production parts, not on the drawing alone
- Discard after a single use
Questions Buyers Ask
Questions About Graduated Droppers
Are the graduations printed?
No. They are formed in the cavity so they cannot wear off inside a kit box.
Can you verify the volume at each mark?
We verify mark position against your drawing on sampled parts. Volume verification against your protocol should be repeated in your own laboratory on production parts.
Can graduation be highlighted in colour?
Colour fill is an added operation and we will tell you honestly whether it is worth the cost for your volumes.
Internal Links
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Transfer Pipettes And Droppers
Dropper Pipettes
Molded dropper pipettes for controlled drop by drop delivery.
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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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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.