English to Portuguese Tech/Engineering Chemistry; Chem Sci/Eng

All measured hexane and higher hydrocarbons are combined and input as hexane in the calculation regardless if their individual component amounts are less than 0.1 %.
If the measurement reported a value for hexane-plus hydrocarbons, then that value should be input as hexane.
If the measurement reported a value for heptane-plus hydrocarbons, then that value should be input as heptane.