Concentration
value
Description: The numerical value of the concentration, -1 if unknown
Required: yes
Type: number (float)
unit
Description: The unit of the concentration
Required: yes
Type: enumerator (string)
Options: ('M', 'mM', 'µM', 'nM', 'pM', 'fM', 'aM',
'g/L', 'mg/mL', 'µg/mL', 'ng/mL',
'mol/kg', 'mmol/kg',
'v/v %','w/w %', 'v/w %', 'w/v %',
'U/ml','% saturated')