A system for processing a biological sample can include a droplet generation assembly comprising a plurality of first reservoirs configured to contain an aqueous sample and a plurality of second reservoirs configured to contain a carrier fluid immiscible with the aqueous sample. The plurality of first reservoirs and the plurality of second reservoirs can be arranged to be in respective flow communication in pairs of reservoirs comprising a first reservoir of the plurality of first reservoirs and a second reservoir of the plurality of second reservoirs constituting a plurality of pairs of reservoirs. The droplet generation assembly can further include a flow control system configured to control a pressure in the plurality of pairs of reservoirs so as to generate a flow of a series of volumes of the aqueous sample separated by the carrier fluid. The system can further include a thermocycling system.

Manifold for a medical/surgical waste collection assembly. A shell includes a proximal end base, and a lip extending proximally from the proximal end base. The lip extends around an outlet opening defined in the proximal end base that is off-centered to a longitudinal axis of the shell. A cap including a cap head is coupled to a side wall of the shell. A drip stop may be seated within a space defined by the lip to cover the outlet opening. An arcuate section of the lip may be flush with an adjacent section of the side wall. The cap head may define a through hole, and a flapper valve unit may be coupled to the cap head with another component having ears extending through the through hole. A fence may extend from the cap head and configured to be grasped by a user.

Provided is a gas exhaust apparatus for expelling a gas in a treatment space of a wafer treatment apparatus to outside, the gas exhaust apparatus including a main exhaust line connected to the treatment space, and an auxiliary exhaust line having an end connected to the main exhaust line to supply an external air current to the main exhaust line, wherein an automatic closer is disposed at another end of the auxiliary exhaust line to close the other end of the auxiliary exhaust line in a specific situation.