On 11/18/2010 01:07 PM, Igor Chudov wrote: > > Karl, what sort of Lysol did you use, there are so many Lysol products.
http://www.amazon.com/Lysol-Brand-Concentrate-Original-Scent/dp/B0012ZAOGC Lysol is based on breaking the cell walls of any growth. It doesn't take much - say 1/4 as much as for mop water.. The problem is that a lot of these coolants are based on lanolin - basically animal fat - and that presents itself as an excellent growth media for anaerobic bacteria. You might notice that the stench is similar to a grease barrel that has been sitting to long. (I also had it plug up mist heads with bacterial slim ). Running the pump aerates the coolant so anaerobic beasts can't grow, but there are other beasts (that don't smell ) that can grow and pose at least a theoretical risk. Some brands of coolent have some antibacterial stuff already added, but this stuff is not blended to last long term for the weekend machinist where it might sit for a few months - dare I say years?. One other issue - it is possible to grow things that are bad for us - molds can trigger allergies, but there are putrefying anaerobic bacteria that can get in a nick or cut on one's hand and do bad things. I think less harmful bacteria/molds are the common problem, but your coolant can act as a petri-dish and grow most anything if the PH is right (so it won't irritate your skin) and there is a supply of food ( lanolin ). Now that mist cooling is common, we even end up breathing a bit of this stuff. Legionnaires has been spread by air-conditioning coils where the drain was plugged and it formed a mist. http://en.wikipedia.org/wiki/Legionnaire_disease ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
