purely white,no any color change;good for LED related products. it is a high class white photoimageable solder mask ink.It has high reflectance rate,low heat discoloration degree and excellen coverage;no color change.So,it’s good to be used to LED related products. Color: Purely whiteMix ratio:75:25Viscosity:180~ 280ps±20ps 25oC ,VT-04 viscometer