Lets say I have a table emp_details with columns as emp_id and in_time. E1 10/1/2009 10:34:00 AM. E2 11/3/2009 10:32:00 AM. E3 1/12/2010 10:19:00 AM. E4 1/4/2010 10:19:00 AM. E5 1/5/2010 10:26:00 AM. E1 1/6/2010 10:22:00 AM. E3 1/13/2010 9:59:00 AM.
Analytical Chemists require a bachelor's degree in chemistry, physics, or other related field just to obtain entry-level positions. Obtaining extensive lab experience through work-study programs or internships is highly recommended.
The American Chemical Society (ACS) Committee on Analytical Reagents sets the specifications for most chemicals used in analytical testing. Currently, ACS is the only organization in the world that sets requirements and develops validated methods for determining the purity of reagent chemicals. These ACS chemical specifications have also become the de facto standards for chemicals used in many high-purity applications.