what to do, what to do????
[FONT=geneva,Helvetica,Arial,sans-serif][SIZE=-1][FONT=geneva,Helvetica,Arial,sans-serif][SIZE=-1][FONT=geneva,Helvetica,Arial,sans-serif][SIZE=-1][FONT=geneva,Helvetica,Arial,sans-serif][SIZE=-1]Technical grade chemicals are less pure than reagent grade chemicals, and are usually used in applications where there are no official standards for impurity levels. Commercial grade chemicals are prepared in volume for general industrial use. Purity levels vary but they're often comparable in purity to technical grade chemicals.
http://antoine.frostburg.edu/chem/senese/101/safety/faq/tech-vs-commercial-grades.shtml[/SIZE][/FONT][/SIZE][/FONT]
what to do, what to do????