A unit related to the SCCM is the SLM or SLPM which stands for Standard litre per minute.  Their conversion is 
and
Another unit is the SCFM which stands for standard cubic feet per minute.
Yet another unit related to SCCM (and SLM) is the PCCM (and PLM) which stands for Perfect Cubic Centimeter per Minute (Perfect Litre per Minute).  One PCCM is one SCCM when the gas is ideal.  In other words, one PCCM is exactly the same as one SCCM if and only if  in the above relationships.