why Fluoro-Spec costs less than similar tests — hero image

why Fluoro-Spec costs less than similar tests

Three reasons Fluoro-Spec is priced below comparable MABr tests, plus the prior-art status of the chemistry.

By Eric Ritter · April 20, 2026 · 2 min read ← all posts

How is it possible that Fluoro-Spec is less expensive than other tests using the same chemistry?

On Amazon right now, a competing MABr-based test is priced at $79 for 19 milliliters. Fluoro-Spec is $65 for 60 milliliters.

There are a few reasons for the difference.

First, I hold the only legal authorization in the United States to commercially manufacture and sell methylammonium bromide, under TSCA Low Volume Exemption L-25-0206. That means I don't need to hide the chemical or dilute it to obscure what's in the bottle. The active ingredient is listed on the label.

Second, I own my company outright. No investors, no equity partners, no payouts to people whose contribution ended with an idea. I run the operation, manufacture the product, and price it accordingly.

Third, my goal is access. Not capturing a premium segment. Not protecting market share. I want the technology to reach as many people as possible, and that's only possible if the unit cost is as low as I can get it.

On the intellectual-property side, the underlying chemistry, reacting methylammonium bromide with lead under UV illumination to produce a fluorescent perovskite, is publicly documented in the peer-reviewed literature. Yan et al., Holtus et al., and Wang et al. all describe the relevant methods. An application attempting to claim ownership over what is, in effect, routine application of published techniques to new surfaces faces significant prior-art problems. Whether it was obvious to try the method on common surfaces is a question the patent examiner has the tools to decide.

My position has always been that this chemistry should remain a commodity, accessible to anyone who needs it. That's how a tool gets out to regular households, rather than staying in a boutique.

If you have been told by anyone that a patent is in force, or anything else about me or my company, please let me know. Misinformation on this topic has made it harder for the test to reach the people who need it.

That's what the rest of this book is going to be about.

You can catch it with a flashlight and spray bottle in your hands.

Test your stuff. Move on.

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Lead detection quiz

3 questions about how lead testing actually works.

Question 1 of 3

How does Fluoro-Spec detect lead differently from colorimetric swab tests?

Methylammonium bromide (MABr) in isopropanol reacts with lead pigment to form perovskite nanocrystals. Those quantum dots emit ~530 nm (bright green) under UV. The glow is locked to the lead surface shape, it's not a color change.
Question 2 of 3

A Fluoro-Spec test on a painted door trim comes back negative. What does that tell you?

Each test covers the exact surface swabbed. Door trim, window wells, baseboards, and floors all have independent lead status. A single negative doesn't clear the home, test room by room, surface by surface.
Question 3 of 3

What is the current CDC reference value for childhood blood lead?

3.5 µg/dL as of 2021. The CDC lowered it from 10 → 5 in 2012, then 5 → 3.5 in 2021, each time following evidence of harm at lower levels. The number keeps dropping because the research keeps finding effects.
correct

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