Custom Microfluidics from Prototype to Scale: A Manufacturing Guide

The microfluidics manufacturing journey

Most successful microfluidic products pass through three broad stages:

Prototyping — proving the design works.
Pilot / bridge volumes — validating the device in its final material.
Production at scale — manufacturing thousands to millions of identical parts.

The key to a smooth journey is choosing materials and processes early that can carry through to volume, so the design does not have to be reinvented later. (New to the terms here? See what microfluidics is and what a microfluidic chip is.)

Stage 1: Microfluidics prototypes

Early on, speed and flexibility matter most. The goal is to iterate quickly and cheaply while the design is still changing. Common prototyping routes for custom microfluidics include:

PDMS soft lithography / drop casting — liquid silicone cast over a mould, ideal for research-scale prototypes and cell-based work. We machine reusable aluminium moulds for PDMS casting.
3D printing (SLA / DLP) — the fastest route from CAD to a physical part, good for testing channel layouts in days.
CNC micromachining — cuts channels directly into thermoplastics such as COC, COP or PMMA, useful when you want to prototype in a production-representative material.

At this stage you typically need anywhere from one to a few hundred microfluidics prototypes.

Stage 2: Pilot and bridge volumes

Once the design works, the next step is to validate it in the material and format you intend to ship — before committing to expensive production tooling. CNC machining in the final thermoplastic, combined with production-style bonding, lets you build tens to thousands of parts for testing, regulatory work and early customers. This is also where design-for-manufacture (DFM) review pays off: checking wall thicknesses, draft angles, channel aspect ratios and bonding compatibility so the design is ready to mould.

Stage 3: Microfluidics at scale

For volume production, injection moulding is the dominant method. Injection moulded microfluidics offer low per-part cost, excellent repeatability and optical quality suited to diagnostics and analytical devices:

Thermoplastic injection moulding in COC, COP, PMMA or polystyrene, for tens of thousands to millions of parts.
PDMS injection moulding for elastomer devices at production volume.
Cleanroom manufacture (e.g. ISO Class 7) under ISO 9001 and ISO 13485 for medical and IVD products.
Sterile packaging (blister packs or shaped Tyvek pouches) and gamma sterilisation, when the device ships as a finished clinical product.

Producing microfluidics at scale requires a mould (tool) cut to high precision, plus careful control of moulding parameters to replicate micron-scale features shot after shot. You can see the full set of routes on our manufacturing services page.

Choosing materials that scale

A frequent and costly mistake is prototyping in a material or geometry that cannot be manufactured at volume. Thermoplastics such as COC and COP are popular precisely because they prototype well by CNC machining and then transfer cleanly to injection moulding. Our guide to COC vs COP vs PMMA explains the trade-offs, and our materials comparison lists the key parameters.

Why work with a single microfluidics supplier

Splitting a project across separate prototyping shops, machinists, moulders and packagers means repeated re-quoting, re-uploading and re-explaining — and a high risk of a design that has to be reworked when it finally reaches the moulder. Working with a single microfluidics supplier who covers the whole route — prototype, pilot and production — keeps the DFM knowledge in one place and gives you one point of contact from first part to final shipment.

That is exactly how we work: one upload, one conversation, every step from prototype to injection moulded microfluidics at scale managed under one roof.

How to get a quote

Upload your design for a written quote, usually within one working day.
Request an NDA first if you would like your design covered before you share it.
Book a call to talk through materials, volumes and timelines.

Frequently asked questions

What is custom microfluidics?

Custom microfluidics are microfluidic chips designed and manufactured to a customer's specific channel layout, material and performance requirements, rather than bought off the shelf — typically produced from a CAD design through prototyping and into volume manufacture.

How are microfluidics prototyped?

Common prototyping methods are PDMS soft lithography, 3D printing and CNC micromachining, which allow fast, low-cost iteration before committing to expensive production tooling.

What is injection moulded microfluidics?

Injection moulded microfluidics are chips manufactured by injection moulding, where molten thermoplastic such as COC or COP is forced into a precision mould to produce large numbers of identical chips at low per-part cost.

How do you scale microfluidics from prototype to production?

By moving from quick prototypes (PDMS, 3D printing) through CNC-machined validation parts in the final material, to injection moulding for volume — ideally keeping the same supplier and material path to avoid redesign.

What does a microfluidics supplier do?

A microfluidics supplier designs, prototypes, manufactures, bonds and — where needed — packages and sterilises microfluidic devices, ideally supporting the full route from prototype to volume production under one point of contact.