Tubular Plankton Chambers are used for microscopic analysis of plankton samples. The sedimentation process is carried out inside the original inspection cylinder to avoid any falsification of the samples during handling. The chamber consists of a plexiglass tube with an unscrewable metal base ring holding a thin base plate of just 0.2 mm. Analysis of the sample is made on inverted microscopes. Our scope of delivery includes one chamber, one glass cover plate and a set of 50 glass base plates.