I'm pretty new to screen printing and am trying to get a little shop set up at home to screen print but have a problem already. I ordered Ulano UL925WR (since I used water-based inks) but I can't seem to wash off the emulsion with just water. I'm using a 500 watt halogen bulb to expose and have tried different times but none allowed me to get ANY of the emulsion off with just water and a brush. (note: I'm also using a home hose for cleaning) I tried applying the emulsion without exposing it and then took it outside to clean it off, but still no luck. Could the sun be hardening the emulsion w/in seconds? Also I left the emulsion containter in my garage the other day and it was hot...like 80's or so...could that have ruined the emulsion? It still seemed to change color when I took it outside the last time w/o exposing it first. (changed from brownish to violet) Anybody with any ideas/experience would be a great help. I hate to have to waste the emulsion cause I can't get if off my screen. (P.S. The emulsion comes off easily when I used emulsion remover) Thanks in advance.