Amazon.com: Customer reviews: Uranium Ore

Top positive review

Exactly as expected.

Reviewed in the United States 🇺🇸 on August 26, 2022

Comes in at a spicy 4000+ cpm depending on orientation of Geiger counter against the specimen. Also trace fluorescence under UV light at 365nm.

2 people found this helpful

Top critical review

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Joe S.

2 out of 3 were very small, all are very weak, 500cpm-600cpm only.

Reviewed in the United States 🇺🇸 on August 10, 2022

I ordered 3 samples, 2 of them were very small, all 3 are very weak, 500cpm-600cpm only.
Very disappointed in these, I suggest you buy elsewhere.
Also, no one else tells you, so let me say it here.
These are “NOT” returnable!

2 people found this helpful

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From the United States

Jason

Exactly as expected.

Reviewed in the United States 🇺🇸 on August 26, 2022

Verified Purchase

Comes in at a spicy 4000+ cpm depending on orientation of Geiger counter against the specimen. Also trace fluorescence under UV light at 365nm.

2 people found this helpful

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Joe S.

2 out of 3 were very small, all are very weak, 500cpm-600cpm only.

Reviewed in the United States 🇺🇸 on August 10, 2022

Verified Purchase

2 people found this helpful

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Clayton E. Cramer

Alpha Particles Will Not Be Useful for Your Civil Defense Survey Meter

Reviewed in the United States 🇺🇸 on March 28, 2022

Verified Purchase

If you have a Civil Defense radiation survey meter, this will not be useful for verifying that it works. Those survey meters are sensitive to gamma radiation, not alpha particles. My bad. I am sure for the sort of low risk science class stuff, this is a fine choice. Why anyone would rate this for "sheerness" eludes me.

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James

Im no chemist but....

Reviewed in the United States 🇺🇸 on March 26, 2022

Verified Purchase

I bought this just so I could say I bought Uranium on Amazon. The sample is small but it is Uranium. I gave the sample to a High School chemistry teacher. For testing or education this sample will be more than enough. If you are looking to make something sinister, then you will have to go talk with the Ayatollah.

4 people found this helpful

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E. Lee

Geiger Counter Clicks and Beeps

Reviewed in the United States 🇺🇸 on April 8, 2022

Verified Purchase

Uranium ore comes with a certificate of authenticity. I tested it using my geiger counter. The geiger counter began to click and beep registering over 130 CPM. My understanding is that since this is a small amount of naturally occurring ore, it is legal to possess.

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Kindle Customer

Ignore those who say this is no good.

Reviewed in the United States 🇺🇸 on December 19, 2021

Verified Purchase

Just checked this with my four counters and the readings were as expected. Not as hot as a collection of raw Uranium ore that I have, but still provides the readings that should be expected. Great product for educational purposes. Fast shipping...I would highly recommend for those with the right gear and expectations! Note that the beta and gamma release on this item is low, the alpha is much higher which is expected. You need the right detecting gear to measure them all. Good luck!

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Jessica B.

More than I expected

Reviewed in the United States 🇺🇸 on March 1, 2022

Verified Purchase

What can I say? I took a chance and ordered some as a bday gift to myself. Advertisement picture was showing in the 900scpm and i was like cool it’s hot. Was not expecting a 3108cpm to arrive at my door. Best bday gift ever! I’m so excited and settled it right in with my uranium glass collection.

One person found this helpful

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Christophe

A surprisingly hot little source.

Reviewed in the United States 🇺🇸 on April 23, 2021

Verified Purchase

I am a "Radiation Worker" in the U.S. so I have experience working with radioactive sources. I bought a geiger counter for personal use (GQ GMC-600+) and I wanted to get an idea of its function. I ordered the Uranium sample, which did take a bit longer to arrive than I anticipated, but it was worth the wait.

As you can see from the picture I attached, with direct contact to the Uranium sample my GC indicated a high of 6.874 Milli-Roentgens/hour of Gamma decay, and 24,060 Counts Per Minute of Alpha decay! The label on the can and bag the sample comes in says 2697 CPM when it was tested, so the technician must have found the weakest part of the sample when testing. This sample is stronger than I expected, but is still perfectly safe.

5 people found this helpful

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Tennessee Phil

Since uranium for geiger counter testing

Reviewed in the United States 🇺🇸 on September 12, 2019

Verified Purchase

This is a nice, very active uranium sample that's useful for testing geiger counters. It came in a metal container with a certification document from "Images SI Inc." stating that they tested the sample and measured 1,682 CPM using their GCA-07W geiger counter.

To avoid contamination, I left the sample in its plastic bag while I tested it with my S.E International Ranger Alert and my GQ GMC-600Plus. Both the Ranger and the GMC-600+ have open windows with pancake detectors. Here are my results:

Ranger readings:
Direct contact with the plastic bag = 9,400 CPM
Separated by a piece of paper = 6,400 CPM
With plastic cap covering detector hole = 1,650

GQ GMC-600+
Direct contact with the plastic bag = 6,700

The Ranger has a fine grid over the detector opening. The GMC-600+ has a plastic mesh covering a screen. So the sample was about 5 mm further from the GM tube and partially covered by the plastic grid.

My conclusion is that both the GMC-600+ and the Ranger are much more sensitive than the GCA-07W. The Ranger is the most sensitive probably due to the fine mesh protector and the proximity of the grid to the GM tube.

Btw, Amazon provided a star rating for "flavor" for this product. I didn't evaluate that.

91 people found this helpful

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ce54r

The best useless product I've ever purchased.

Reviewed in the United States 🇺🇸 on June 1, 2013

Verified Purchase

So after a few weeks I finally had the balls to open the container and see what's inside. The item came in white cardboard container which displays the radioactivity symbol and the warnings about the product, and it's probably the best part because of its semi-menacing look. Inside that container was a smaller metal container which was very well protected in bubble wrap and foamy things. This metal container has no labels of any kind. Inside the metal container is the uranium inside a plastic bag surrounded by more foamy things. The uranium looks just like any other little rock, and when I say little, I mean little. It was disappointing it didn't glow like kryptonite, because I don't have a Geiger counter to check it and see if it's really radioactive, so this could be just a little rock and not uranium.

So, I paid $7 for the right to say I ordered uranium on the internet, I guess, not bad, better than $40.

One thing, on the white container the warning says that the "specimen emits alpha, beta and gamma rays", I'm not sure about the beta or gamma, but I definitely feel the alpha rays because immediately after opening the container I got this impulse to drink beer and watch sports.

326 people found this helpful

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5 star		76%
4 star		13%
3 star		5%
2 star		1%
1 star		6%

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