To be mixed with ProntoFix Resin and ProntoFix Hardener. To accelerate the ProntoFix system if curing time with the ProntoFix Hardener is too long. 70 ml accelerator must be mixed with 275 ml ProntoFix Hardener. The mixture corresponds to 1.3 l ProntoFix Resin. Empty bottle for premixing Hardener and Accelerator is available