Chemistry contains a complete periodic table into which have been described all the proprieties of all elements and includes two elements:
“Assay” that describe how to prepare and a solution with a pre-indicate concentration, how determinate the assay of it, how to collect all the date for the determination of the factor.
“Calculator” is an automatic calculator to determinate all the concentration: molarity, normality, ppm, percentage the a solution without problems.
Visit the dedicate web site or watch on YouTube the video:
http://www.youtube.com/watch?v=3bd-f0HgHUs&feature=feedwll&list=WL