Convert CPM (Count per minute) to REM

Disscussing old, rare, very specific or otherwise uncommon units and measurements


Convert CPM (Count per minute) to REM

Postby zainali » Thu Sep 18, 2008 11:03 pm

our instruments measure everything in CPM. is there any way to convert this to REM (Roentgen equivalent Man)

CPM to Rem

Postby rad » Tue Jul 07, 2009 3:27 am

Since CPM is used to measure particulate radition such as alpha you don't need to convert it. Alpha is only dangerous if you inhale, swallow, or absorb it through open wounds. Rem is the dose of raditation your body is getting. With alpha (assuming you are protected) you shouldn't be exposed to any rem.

Re: Convert CPM (Count per minute) to REM

Postby hottung » Thu Apr 21, 2011 7:48 pm

CPM is also used RIGHT NOW to measure GAMMA radionucleides. An EPA gamma detection station, RadNet, near here, is measuring 5000 Counts per minute constantly for the past month of a particular radionucleide, and also 8 other radionucleides that range from 100 to 2000 cpm.

These high counts started after the nuclear explosions at the Fukushima Nuclear Power Plant in Mid March 2011.

We have a right to know what the meaurements are of radioactive isotopes existing in our foods, and what the safe limit is, TECHNICALLY, there is no safe limit when it comes to radioactive isotopes because a single atom can begin an irreversible reaction within our bodies leading to various cancers.

Re: Convert CPM (Count per minute) to REM

Postby Blicker » Tue Oct 11, 2011 7:07 pm

I make use of Geiger-Mueller detector. In general it depends on the kind of detector being used and on the type of radiation being measured.
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