Thinner 419

AcromaPro Thinner 419 (Slow) is a HAPS-free, high-performance thinner engineered for all AcromaPro acid-curing and nitrocellulose products. With an evaporation rate slower than Thinner 219, Thinner 419 extends open time to deliver exceptional flow and leveling, reducing the risk of orange peel, air popping, and spray defects. The proprietary blend of esters and alcohols offers precise viscosity control while supporting a safer work environment. Ideal for larger or more complex projects, Thinner 419 helps finishers achieve smooth, professional results—even under challenging conditions.