Friday, August 13, 2010
soda lime contains a colour indicator which tells the user when it is already saturated with carbon dioxide (in this case, from WHITE to PURPLE) & therefore needs to be changed. so when it turns purple, the whole cannister is emptied & fresh white-coloured ones refilled. something akin to changing your domestic water filter when it turns brown.
another manufacturer makes RED-coloured soda lime which turns WHITE when saturated with carbon dioxide. it really doesn't matter which manufacturer you source the soda lime from, as long as you are aware of the colour change.
so what happens when you decide to change from one manufacturer to another? surely, you'd completely exhaust your existing stock before using the new supply, or else the colour change will be confusing, and dangerously so.
this is what happens when people get careless & therefore set the stage for a medical catastrophe.....
this lackadaisical attitude happens everywhere though :
in school, when wrongs facts are taught;
in construction, when wrong angles are calculated;
on the roads, when overtaking on double-lines;
& even at home, leaving the gas stove burning with a curious child on the loose.
i seriously think a lot more things didn't get a lot more worse because of divine intervention.
btw, it's friday 13th today but do have a good and SAFE weekend!