Hello oyewale,
I am a chemist, and the volumes that I work with are quite large. As an example, I work (on a daily basis) of no less than one million gallons of material per day. Yes, I perform analysis and create new products that are either gaseous, liquid or solid (organic or inorganic), and require a great deal of interpretation in very complex situations (computer modelling programs have not been created for this - due to the complexity of the model).
Just my $0.02,
Eugene