A NOTICE TO BUYERS

Know what
you're buying

The law puts the duty to check on you.

When a product claims to find lead by making it glow, something in the bottle is doing the work. With perovskite lead tests that something is a single chemical compound, and you have every right to know what it is and whether it was made and sold legally. It takes about thirty seconds to find out.

SEE OUR BASIS GET THE SAFETY DATA SHEET

Vintage public-notice poster: Know What You're Buying. Was it lawfully made or imported? Ask the maker to show its EPA TSCA Section 5 basis.

FS‑5

How to verify any seller in 30 seconds

Three questions. Ask them before you buy.

Ask what makes it glow

A straight answer names one compound and its CAS number. For perovskite lead tests the compound is methylammonium bromide, CAS 6876-37-5. A seller who will not name the active ingredient has already told you something.

Ask for the TSCA Section 5 basis

Methylammonium bromide is its own distinct substance, and it is not on the EPA TSCA Inventory. Under Section 5 of the Toxic Substances Control Act, a substance that is not on the Inventory cannot be manufactured or imported into U.S. commerce without a Premanufacture Notice (PMN) or an EPA-granted exemption such as a Low Volume Exemption (LVE). Ask the maker to show theirs.

Ask for the Safety Data Sheet

A compliant maker keeps a Safety Data Sheet prepared under the OSHA Hazard Communication Standard, 29 CFR 1910.1200, and hands it over at no cost. No sheet, no sale.

One question settles most of it. Ask to see the basis.

Vintage poster: Don't Say MABr. A note on careful wording. Methylamine plus hydrobromic acid react into methylammonium bromide, a new chemical under TSCA Section 5. We'll say it: MABr.

MUM'S THE WORD

Why they won't say MABr

The old notice warned that loose lips sink ships. Here, it is the sealed lips you should watch.

A seller who would rather not answer will spell out "methylamine and hydrobromic acid" a dozen ways before printing the four letters that name the salt itself. The vague words do real work. "Proprietary reagent," "perovskite precursor," and "active solution" never have to answer for themselves.

Say it or not, the bottle holds the same thing. Methylamine and hydrobromic acid react into methylammonium bromide, CAS 6876-37-5, a new chemical under Section 5 of the Toxic Substances Control Act. Naming it puts that on the table, and the next question follows on its own: who is authorized to make or import it.

We will say it. MABr. And we make it under an EPA-authorized Low Volume Exemption.

Why each maker needs its own

An EPA Low Volume Exemption is granted to one company, under specific conditions, and it is non-transferable. Buying the same compound from someone else does not place you under their authorization, and it does not place them under anyone else's. Any party that manufactures, imports, or distributes methylammonium bromide in U.S. commerce needs its own LVE, PMN, or applicable Section 5 exemption. So the only question that matters is whether this particular seller has a basis of their own, and whether they can show it.

We hold our own

We do not ask you to take this on faith. Fluoro-Spec Inc. manufactures its lead-detection reagent under an EPA-authorized Low Volume Exemption (LVE) granted under Section 5 of the Toxic Substances Control Act (40 CFR 723.50). We name the active ingredient on the label and online: methylammonium bromide, CAS 6876-37-5, at 1.5%. We publish the full Safety Data Sheet at no cost, and we keep a Safety and Compliance page that lays out our TSCA, DEA, and OSHA status in plain language. A lawful product has a basis to show. Here is ours.

Safety & Compliance

The full TSCA, DEA, and OSHA posture, in plain terms.

READ IT →

Safety Data Sheet

The complete SDS, emailed to you at no cost.

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The lead test kit

Methylammonium bromide reagent and a 365nm UV light.

SEE THE KIT →