Generally speaking, heating a platform alone is a good strategy only for very slow or non-flow conditions. The solution loses most of its heat enroute to the chamber.

Under the more common flow conditions of 2-10 ml/min, an inline heater is a better way to deliver heated solution to a chamber.

Combining the two approaches yeilds the most effective strategy: The inline heater heats the solution and the platform reduces heat loss in the chamber.