Hi, I am currently looking for a replacement solvent to remove RMA flux from Hybred Ceramic Substrates after reflow. We are currently using Dichloromethane in a Crest AVD500 wash. This solvent carries an R40 risk phrase, hence we are on a drive for a suitable substitue solvent which carry `lesser` risk phrases. * due to the nature of our product we cannot use ultrasonic energy. Also due to space constraints we must stick with the AVD wash. Any suggestions would be greatly appreciated!