RBP DX-45 Plus one-part concentrate is for developing fully aqueous dry-film photoresists and photoimageable solder masks. For use in feed and bleed systems. Is said to require less frequent replenishment than more dilute carbonate solutions. Reportedly enhances loading, keeps equipment clean, and ensures straighter sidewalls by cleaning the foot of underdeveloped resist.
RBP Chemical Technology, www.rbpchemical.com