A discharging system (100, 200, 300, 400, 500) for discharging liquid to pasty compounds (107, 207, 30, 507) out of cavities (106, 206, 306, 506) of at least two containers (105, 205, 305, 405, 405′, 505), comprising a delivery end (109, 209, 309, 409, 509) at which the compounds (107, 207, 307, 507) are discharged; a receiving unit (101, 201, 301, 401, 401′, 501) for at least two containers (105, 205, 305, 405, 405′, 505) comprising the cavities (106, 206, 306, 506) filled with the compounds (107, 207, 307, 507) to be discharged; for each container, a respective advancing rod (103, 203, 303, 403, 403′, 503) with a pusher element (104, 204, 304, 504) provided on that side of the advancing rod (103, 203, 303, 403, 403′, 503) facing toward the delivery end (109, 209, 309, 409, 509); for each container, a respective advancing device for advancing the advancing rod (103, 203, 303, 403, 403′, 503), with the pusher element (104, 204, 304, 504), toward the delivery end (109, 209, 309, 409, 509) in order to discharge the compounds; for each container, a respective means for determining the volume of respectively discharged compound (107, 207, 307, 507).