... sure task is finished in stipulated time6. 10~60s adjustable time of dropping liquid,shaking basket,and drop liquid above cylinder ... this way, service time of reagent can be prolonged,aviod dirty on the table7. 0~6times /min adjustable stirring times(0 ... cylinder) ,0~24 H (other cylinder)4. Time of exchange cylinder,delay,leachate:10~60s (adjustable),and leachate ,basket shaking work above cylinder5 ...