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A citizen measured beta ray from chocolate

A Japanese citizen (Tatoo artist) tweeted that he measured beta ray from chocolate.

The chocolate is a type of snack in a tube, made in Ishioka, Ibaraki.


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The background radiation (beta ray) was 0.000 microSv/h.

It picked 0.004 microSv/h on the chocolate. The max reading was 0.005 microSv/h.

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It is likely to be from strontium contained in the chocolate.

The person who conducted this measurement analyzes water in eastern Japan is contaminated already.

Following up test is expected.

Mochizuki
Mochizuki
The writer of Fukushima Diary.
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3 Comments

  1. I would rather have a video of the full testing for this. Because using a Terra MKS-05 (bluetooth) against some morinaga milk chocolates I also have a reading up to 0.008microSv/H. But after few seconds of stabilisation the reading went to 0 and stayed there. Also, I’m pretty sure that the Terra manual state that beta measurement need to ne done with the back cover of the probe tube removed and the counter as close to the source as possible.

    So while I’m open to any possibilities these days. The measurement protocol seems to be flawed… Maybe it would be nice of you to provide ‘how to s’ on the proper procedure for radiation measurement at home.

    Yours, and thanks for your work.

  2. I live in Tokyo, Koto-ku (you can check with my IP).

    The post about the chocolate is really wrong. I myself check for radioactivity near my place and recently I tried to check food.

    My conclusion is that there is no way to check radioactivity in food with a Geiger counter, mainly because of potassium.

    Potassium is absolutely safe, but it is emitting so any Geiger counter will pick it.

    I tested many things, always using a 1 hour average to reduce the influence of background radiation (in my place, background radiation, on a 1 hour average, is always between 26 and 28 counts per minute)
    Now I can tell you that foreign products from Europe (locally produced vegetables and cheese sent to me by my family) had bigger amount of radiation than (for example) cheese from Hokkaido (42 counts per minute for French cheese vs 34 counts per minute for Hokkaido cheese).
    I really do believe this is because of potassium and that actually, neither the Hokkaido cheese or the French one has any cesium or strontium in it.

    That said, I do take care like every one should…I don’t even test any vegetable from Tohoku and Kanto because I’m not buying them anyway.

    Anyway, I hope you good, but really, I think you should reconsider the post I’m commenting on because this info way uncertain and it can make you less convincing on other subjects.

  3. Is it just me or is Ibaraki setting some records, across the board? They are in so many reports from so many sources, both official and amateur. I’ve never been there, but I now recognize “Ibaraki” as a danger zone based on the gathering evidence. Maybe the residents will mutate and adapt though???… It’s quite an experiment in Japan!

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About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.

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