Transfer Pipettes And Droppers
Transfer Pipettes
Single use transfer pipettes molded for consistent draw and release.
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Transfer Pipettes And Droppers
Dropper Pipettes
Molded dropper pipettes for controlled drop by drop delivery.
Product Overview
What This Component Is
Molded dropper pipettes for controlled drop by drop delivery. Where a transfer pipette moves a sample, a dropper doses it, so drop volume consistency is the specification the whole part is built around.
Key Benefits
- Drop forming geometry cut in steel so every cavity doses alike
- Orifice detail produced by EDM rather than by post molding operations
- Clean room molded where the dose reaches a patient or a reagent
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 makers
- Ophthalmic product brands
- Laboratory reagent suppliers
Problems It Solves
- Drop volume drifting so a stated drop count no longer matches a dose
- Orifices that block or deform during molding
- Droppers that stream instead of dropping when squeezed quickly
Application Scenarios
- Reagent dosing in diagnostic kits
- Topical and ophthalmic dosing
- Controlled addition in laboratory protocols
Technical Features
How It Is Engineered
- Orifice size and land length controlled in the cavity
- Squeeze response reviewed with the intended liquid viscosity
- Cavity to cavity drop volume sampled at tool release
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 | Dropper pipettes and dosing tips |
|---|---|
| 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
| Transfer pipettes used for dosing | A transfer pipette moves a volume. A dropper delivers a repeatable drop, which is a different geometry problem entirely. |
|---|---|
| Assembled dropper and insert designs | One moulded dropper removes an assembly step and an interface that can leak. |
Use Guide
How To Handle It
- Qualify drop volume with your actual liquid, not with water
- Check behaviour under fast squeeze as well as slow
- Store upright and bagged before use
Questions Buyers Ask
Questions About Dropper Pipettes
Can you match a specified drops per millilitre?
Send the target and the liquid. Drop volume depends on orifice geometry and viscosity together, so we sample against your liquid rather than against water.
How is the orifice made?
It is formed in the cavity, with EDM detail where the feature is below conventional cutter size.
Can you supply a matching bottle closure?
We can tool matching parts. Holding both in one plant is how the fit stays reliable.
Internal Links
Related Components
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.
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Surgical And Specialty Devices
Ophthalmic Booster
An ophthalmic delivery component carried over from the original product catalogue, molded as a body and cap assembly.
View Component →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.