Re: Litre/dm3

[Brian_Gaulke@hc-sc.gc.ca]

According to the 1970 edition of the Rad Health Handbook:

1 cm3 = 0.99997 ml

This has to do with the definitions being different at that time.  If they are
now equal, it is because the definition of one or the other changed.  It seems
most likely that the definition of the ml would change to agree with the cm3,
since the definition of the meter makes for easier reproduction.

Since the revised edition of the Health Physics and Radiological Health
Handbook, 1992, says:

1 cm3 = 1.0000 ml

the definitions now agree and the change occurred sometime between 1970 and
1992.

Brian R. Gaulke, CHP
Head, Dosimetry Section
Radiation Protection Bureau
Health Canada
brian_gaulke@hc-sc.gc.ca


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