would you help Jack off the horse?
1. Wear safety goggles during any activity that is potentially harmful to the eyes. 2. Dress properly. Avoid bare feet or sandals. Confine all loose clothing and long hair. Wear a lab apron. 3. Avoid drinking or eating in the laboratory. 4. Exercise care when noting the odor of fumes. Always waft odors toward your nose with your hand. 5. Avoid tasting any chemical in the laboratory. 6. Perform only authorized experiments. 7. Avoid inserting spatulas or pipets into reagent bottles. Transfer, instead, an approximate amount of the reagent to a beaker or other suitable container, and use from the container. 8. Avoid pouring excess chemicals back into a reagent bottle, to prevent contamination. 9. Clean up spilled materials immediately. Dispose of these as directed by the lab instructor. 10. Keep your working surface clean at all times.
I refuse to use dry powder. I work on electronics, and the damage from the powder can do more damage than the fire, so I insist on using CO2 for electrical. No one has mentioned that cost at all, and I need hydro pressure testing, and a new blow out relief disc in one, thanks to APS and their 70 year old transformer that spewed flaming oil all over the place.
the cost to refill a small extinguisher is more than the price of a new on. the main reason is that the extinguisher has to emptyed, pressure tested, refilled and certified. the best thing to do would be to buy a new one. if unused, they last 2-3 years. if you have a large number of mixed use extinguishers which hold 20-25 lbs of foam, co2 abc, water etc type extinguishers, then you would be better off having them checked by a certified firm which inspects, and recharges extinguishers. large businesses will have a contract with such a firm fore annual checks and refills for the units they have, but they are also going to have a large number of spares of each type which can replace any they may have to use, or which may have lost their charge which is a common occurrance for some types.
yougoddabekidding. A new 5lb at home depot costs less that your recharge fee.
A typical recharge will run you about $18 for a 5lb. unit and about $25 for a 10Lb. unit, if it is the rechargeable type. (I work for a company that recharges them all the time.) ABC Fire extinguishers DO NOT NEED TO BE PRESSURE TESTED to recharge them. Where are all of you people getting this? Stored Pressure fire extinguishers of the dry chemical type in decent condition are only subject to a hydrostatic pressure test at a 12 year interval. (NFPA 10). New units of the good rechargeable type are about $35 for a 5 lb. unit and about $50 for a 10 lb. unit. So it makes sense to recharge them unless they are coming due for thier test. In that case, it's about a wash on a 5lb. unit, the 10 lb. is worth testing and a recharge, that would only be about $40. I never heard of a fire department recharging their own stored pressure dry chemicals. In fact, most of the area fire departments bring us their dry chemical units for recharging. But apparently they do where nixmaster lives. Even if they had the capability, I wouldn't think they'd want the liability of doing the work for the public.
