Multi-prime can be used over unsanded e-coat and gives excellent final appearance even in wet-on-wet primer mode. Easy to use and easy to spray, 9101, 9104 and 9106 give all the advantages in terms of process efficiency from a wet-on-wet primer, but with improved hold out leading to better quality of finish. HP Multi-Prime can also be used as a holding primer helping to push jobs through the booth quicker. With multi-substrate capability, these new primers offer optimum final appearance making it the right choice for the repairer. HP MULTIPRIME can be applied over:- New panels in good quality electrocoat, without sanding. GRP and Fibre glass prepared with P120/P240 and finished with P320. Polyester filler prepared with P120/P240 and finished with P320. Original finishes in sound condition, after sanding with P400 Dry. Bare Plastic Substrates that have been prepared according to TDS 228V and 499V Mixing Ratio by Volume : HP MULTIPRIME 2: HARDENER (4000) 1:. THINNER: 0.5 (6051)