Lensless SPR, Better Data,
and a Transatlantic Adventure.

US Patent Granted for Lensless SPR.

The US Patent Office has granted Affinité Instruments a patent for our lensless SPR architecture — the core innovation that makes our instruments compact, affordable, and genuinely different from everything else on the market.

Traditional SPR systems rely on precise optical alignment — lenses, prisms, and complex mechanics that add size, cost, and fragility. Our architecture achieves the same measurement by eliminating the lens entirely. The result: a smaller instrument, a simpler workflow, and a path to miniaturization that conventional optics simply can't follow.

"Simplicity here isn't a compromise — it's a consequence of getting the physics right."

This patent protects the foundation of everything we build — and sets the stage for the next generation of instruments that will extend lensless SPR to workflows that have never been accessible before.

Precision Antibody Kinetics with the P4PRO.

We ran a Protein A–IgG binding assay on the P4PRO to show what flow-controlled SPR delivers when everything is dialled in. AffiCoat sensors with reference channels. AffiPump fluidics for stable, reproducible flow. Kinetics fitting that matches published literature values — with better curve quality than expected.

"Kinetic constants matching literature values — with superior data fitting. Achievable results, directly on your bench, in under two hours."

The full application note walks through the surface preparation, injection protocol, and fitting approach — with all raw data and parameters included.

The Carry-On Test.

We packed a P4PRO into a carry-on. Checked it in, flew across the Atlantic, unpacked it at the destination. Powered it on. Ran a binding assay.

It worked. Flawlessly.

"Powerful SPR can also be compact, robust, and deliver high-quality kinetic data directly to your bench — wherever that bench happens to be."

The P4PRO fits in a carry-on. Our service model fits your schedule. Whether you're running experiments in your home lab or setting up at a collaborator's site — the instrument travels with you, and it's ready when you are.