To check the quality of cement during purchase we can check following things at shop and site to ensure that the quality of cement is good.
If you are bulk purchaser of cement; then laboratory testing is also convenient and economical for you. You can test your cement sample in National test House or any approved governed lab by the method of IS 4031 (Method of physical testing of hydraulic cement Part1 to Part 15) and IS 4032 (Method of chemical testing of hydraulic cement).