Abstract: A microplate system (1) comprising a microplate (2) and a plurality of containments (3). The microplate (2) has a length in a range between about 127 mm and about 129 mm and a width in a range between about 84 mm and about 86 mm. The microplate (2) has 384 or 1536 receptacles (21). Each receptacle (21) of the microplate (2) extends through the microplate (2) such that it has a first open end and a second open end. Each receptacle (21) of the microplate (2) forms a seat to hold one of the plurality of containments (3). Each of the plurality of containments (3) comprises a cap (32) and a tube (31) shaped to be held in the seat of one of the receptacles (21) of the microplate (2).

Abstract: A fluid analysis arrangement (1) comprises a particle quantifying device (4), a holder (6), a robot (3), a washing station (5) and a control unit (2). The particle quantifying device (4) has a sensor unit (42) with a sensing stick (421) to be arranged in a fluid to sense for particles in the fluid, and an evaluation unit (41). The holder (6) has a plurality of seats each configured to receive a container in which a sample fluid is arranged. The control unit (2) is connected to the particle quantifying device (4) and the robot (3). The sensor unit (42) is mounted to the robot (3).