Posted By Diane Thomason Hi Gavin Have been talking with some of the lab managers here about this. A couple said that they do leave the solvent in the wash bottle. The bottles should be stored in a flammables cabinet overnight. When "in use" they should be left in a fume cupboard e.g. if used from time to time throughout the day. It's possible that leaching of contaminants from the plastic bottle might be a problem in some types of work if the solvent is left in it a long time. I would never advise pouring any chemical back into a stock bottle because of the danger of mistakes or contamination. Hope this helps. Diane

Posted By GavinR Hi, Thank you for your replies and advice. We are using a flammable liquid in an engineering assembly shop as a heavy duty cleaner for threads and the chemical is used frequently and in varied amounts on large and small products. We have instructed the guys to place them in flammable storage containers after use and to make this easier are buying a few small flammable cabinets to place along the work benches so as to reduce the inconvience of them continually walking back and forward to main storage units. With regard fume cupboards this is not practicable due to size of equipment but they are working in well ventilated and open planned areas so don't think it is required. The bottles are LDPE so as far as i undestand that is very suitable material for chemical storage. If you have any other advice or feedback i appreciate your comments. Cheers, Gav