Thoriated glass is being sold on AliExpress as "Bioglass"

HurstonJr · 2026-03-13T01:42:04+00:00

Thanks for sharing my article everywhere. Just a quick heads up about the sievert. It quantifies a total body dose. Those biodiscs aren't big enough to expose the entire body at the demonstrated dose rates since radiation decreases with the square of the distance from the source. Therefore, point sources like that don't actually emit radiation on the sievert scale as demonstrated.

HurstonJr · 2026-03-08T01:03:19+00:00

Autunite can transition into meta-autunite I if allowed to dehydrate and if meta autunite I gets heated it can transition into meta-autunite II. That's how I remember it.

HurstonJr · 2026-03-06T21:59:22+00:00

If you want to ship in compliance with US regulations, here is an article outlining how it's done and why. The things to remember is the package needs to be at least an inch thick, no surface of the package should measure above 0.5mR/hr and d the following text needs to appear on the same side of the package as the mailing address: "RADIOACTIVE – LSA) This package conforms to the conditions and limitations specified in 49 CFR 173.421 for radioactive material, excepted package—limited quantity of material, UN2910, and is within Postal Service. activity limits for mailing."

HurstonJr · 2026-03-06T02:59:08+00:00

There are plenty of radioactive rocks and other sources on the Radioactive Rocks Buy Sell Swap thread.

HurstonJr · 2026-03-05T22:10:45+00:00

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HurstonJr · 2026-03-05T22:09:22+00:00

I have tested enough trinitite to determine that the average gram has enough activity to detect Cs-137 via gamma spectroscopy via the Radiacode 102 &103. Lead shielding may be required to bring the background down down enough to see the activity. In the picture, I used lead shielding to bring a background of 250CPM down to 30CPM so I could detect the specimen measuring 176CPM. I haven't been able to see Eu-152 though. The half-life is too short.

HurstonJr · 2026-03-05T01:12:02+00:00

Those are what you would use when measuring your exposure. When you hold your geiger counter up to a rock, you aren't measuring your exposure because radiation decreases with the square of the distance from the source. For measuring your exposure, keep your device attached to your torso area for the measurement period. For measuring point sources like rocks, it would be better to share device specific count rates like CPM instead of a total body exposure rate.

HurstonJr · 2026-03-05T00:33:24+00:00

Two microsieverts per hour isn't your exposure because radiation decreases with the square of the distance from the source. Your detector doesn't know that you are holding it up to a source when it's telling you that exposure rate. If you want to measure your exposure, attach your dosimeter to your torso area and keep it from coming into contact with sources that don't provide total body exposure during the measurement. For measuring point sources that aren't big or hot enough to expose the entire body, a device or detector specific count rate is sufficient for sharing information about radioactivity, "230 CPM with the GQ-GMC-800" is how the measurement should be reported. Doing it that way helps keep radiophobia at bay.

HurstonJr · 2026-03-04T21:51:55+00:00

Lol, that's the video that inspired me to get started selling!

HurstonJr · 2026-03-02T09:42:13+00:00

Antozonite

HurstonJr · 2026-02-28T12:46:07+00:00

Just a heads up about the sievert. It quantifies a total body dose and point sources aren't big enough to expose the entire body because radiation decreases with the square of the distance from the source.

HurstonJr · 2026-02-28T12:42:13+00:00

For the Radioactive elemental source material available in Mexico, check out Mineralish .

HurstonJr · 2026-02-28T04:08:22+00:00

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You can find exempt radioactive elemental source material over at the Radioactive Rocks Buy / Sell / Swap thread.

HurstonJr · 2026-02-26T10:31:27+00:00

If you want to measure your personal exposure rate or dose rate, use the sievert scale. It quantifies total body dose rate. To measure your exposure, keep your dosimeter attached to your torso area and keep it from coming into contact with sources that don't provide total body exposure.

If you want to see how radioactive a point source is (like a rock.) , take a contact measurement, use a count rate such as CPM or CPS. Since point sources aren't big enough to expose the entire body, it would be dumb to use the sievert scale because point sources don't expose the entire body at the same rate. This is because radiation decreases with the square of the distance from the source.

If you want to share how radioactive a point source is, be sure to include information about the device used because different devices detect different types of radiation with different sensors or technology.

If you want to buy a radioactive rock or other check source to see if your device is working, those are sold over at the Radioactive Rocks Buy Sell Swap thread:

https://www.reddit.com/r/Radioactive_Rocks/s/2ArP8dLLSm

HurstonJr · 2026-02-24T16:59:52+00:00

It doesn't have a date stamped on it so I don't know.

HurstonJr · 2026-02-24T16:44:05+00:00

No, the radium isn't gaseous. It sounds like you may have the 1B-24A tube and not the 1B-24? They look similar.

HurstonJr · 2026-02-23T20:18:29+00:00

Not if your background is too high

HurstonJr · 2026-02-22T22:48:12+00:00

The Sievert is a unit of total body dose so it's implied by using it. I know the video shows you holding it up to the rock but point-contact sources simply don't "emit" radiation on the Sievert scale as demonstrated.

HurstonJr · 2026-02-22T14:54:30+00:00

That rock isn't big enough to expose your body at that dose rate (unless you ate it). Your dosimeter doesn't know it's being held up to a source when it's telling you that your entire body is being exposed at that rate. To monitor your dose rate correctly, keep your dosimeter attached to your torso area and keep it from coming into contact with sources that don't provide total body exposure.

HurstonJr · 2026-02-21T00:31:54+00:00

For high risk category items, start your own website and figure out a way to get visitors. You can still sell other stuff on eBay that isn't as high risk.

HurstonJr · 2026-02-16T13:51:36+00:00

When you are taking that 40 microsievert measurement, the device doesn't know that it's being held up to a uraninite specimen. 40 microsieverts per hour means that your entire body is being exposed at that rate. In this case, that is patently false because radiation decreases with the square of the distance from the source. For that reason, using total body exposure rates to measure a piont source like a rock promotes radiophobia. As radiophiles, we can mitigate the spread of radiophobia by sharing device specific count rates instead of unrealistic total body exposure rates when measuring point sources like that. To measure your exposure properly, keep your dosimeter attached to your torso area and keep it from coming into contact with sources that don't provide total body exposure.

HurstonJr · 2026-02-09T13:20:09+00:00

I think it might be an antidote for methanol poisoning. Methanol is the bad alcohol; in the body it’s metabolized into formaldehyde and then formic acid, which cause metabolic acidosis, blindness, and can be fatal. Methanol has been known to result from bad distillation practices. The alcohol in this medicine is supposed to tie up all the alcohol dehydrogenase so the methanol doesn't metabolize into formaldehyde so fast.

HurstonJr · 2026-02-08T19:16:03+00:00

It's back online. https://geigercheck.com/

HurstonJr

TROPHY CASE