Science Hunter

Can anyone tell me what the best means is to detect a precipitate in an aqueous solution using visual and non-visual methods? Thanks.

Hello All, I am trying to identify the proper method in which antibiotic powders should be stored long-term. Does anyone have a GLP procedure denoting this or can you state the proper method to store antibiotic powders long-term? When desiccating antibiotic powders, what is the best method in which to store them... place them in a desiccator with the antibiotic container lid tightly closed or loosely closed? Any source/reference material is greatly appreciated? Thanks.