As Technology advances and the utilization of smaller components becomes more prevalent, we are reminded that you only have one chance to solder and coat your boards correctly. ROHS has added new challenges and questions. Questions require answers and SELECTIVE CONFORMAL COATINGS INC of Bolton, Ontario now offers Ionic testing of PWBs using Resistivity of Solvent Extract (ROSE). Solvent Extract Resistivity is and excellent way of measuring bulk ionic contamination that can impact long term circuit integrity and is an excellent means to monitor process, evaluate solder fluxes and degredation from environmental impact of ionic residues. more... See more text