Co pod standy : marmur czy granit?

Mart2M · 25 Czerwca 2008

That's it. Przechodze na marmur. Polecam lekture.

We’ve been doing quite a bit research into this issue & purchased a Scintillator & a Geiger counter to find out for ourselves if this is true. We run a custom cabinet & countertop shop & we don’t want to sell our customers something that could be potentially hazardous to their health. Generally if the material is radioactive it is also giving off alpha particles which lead to radon gas (do the research on this). We have found already several slabs to be extremely considered about. We have posted videos on YouTube showing our results of one slab. What it’s looking like is that the exotic granites, the “movement” types, more expensive colors, are the ones most likely to be suspect. And you can’t tell by color alone. We used to think it was confined to Bordeaux but we’re finding other colors, one that was emitting in one spot 1030 uR/hr. (microrem) or 1.03 mR/hr. (millirem per hour), the whole slab averaged about 200 uR/hr. The color is similar to

Ukryta Zawartość

Zaloguj się, aby zobaczyć treść.

Zaloguj się, aby zobaczyć treść (możliwe logowanie za pomocą ) but it is not this color. The salesman would not give our guy the correct name of the color. The one in the video is called Niagara Gold and in one spot it was emitting 409 uR/hr. (actually in a video soon to be posted from a second trip it holds at 430 uR/hr.). The whole slab averaged 150 - 200 uR/hr. These results are with a Scintillator which measures Gamma radiation only not Beta or Alpha. We haven’t had a chance to measure the 1030 uR/hr. slab with a Geiger counter but the Niagara Gold with our Geiger counter was data logged at emitting 7.5 mR/hr. The Geiger counter measures Gamma, Beta & Alpha radiation. Do some research online about what limits of radiation the government reccommends that you should be exposed to and you’ll see that normal exposure to radiation should be at 360 millirems per year. If that slab of granite was put into someone’s kitchen & if they spend 2 hours in the kitchen a day lets say for 350 days of the year, at 7.5 mR/hr they’re being exposed to 5250 millirems per year! That’s higher than occupational exposure limits, people working with radioactive materials.

Ukryta Zawartość

Zaloguj się, aby zobaczyć treść.

Zaloguj się, aby zobaczyć treść (możliwe logowanie za pomocą )

josef · 25 Czerwca 2008

ciekawe co powiedzą osoby, które mają granitowe stoliki pod audio - kilka blatów ma większą powierzchnię emisji, dodatkowo w pokoju siedzą pewnie więcej jak te dwie godziny ;)