Hello CS list, l know l can make cs myself and l have all the instructions
but my husband would rather we buy a cs generator with a calibrator(sp?) so
we get consistent ppms on the cs we make. If anyone knows the best available
as far as accuracy of ppm produced, and quality of cs and value, please
advise us if you have personal experience with any particular brands. Please
advise with the web address and your personal testimony if possible. l need
to make a purchase right away as we are out of cs! and l hate to not have
some around the house. Thankyou in advance, sincerely teri.