9 Scientific apparatus and instruments, namely, optical devices, namely, optical probes with cables for measuring speed; photographic, optical, weighing, measuring, checking, supervision, and signalling apparatus, namely, apparatus for technical institutes, namely, laboratory apparatus, included in this class, namely, magnetic stirrers, overhead stirrers, laboratory dispersers, laboratory mills, laboratory heating hot plates, rotary evaporators, laboratory heating hot baths, vortex creating shakers, orbital shakers, horizontal shakers, test tube shakers, incubator shakers, nutating shakers, rocking shakers, roller mixers, test tube rotators, rocking shakers, and centrifuges, all of the aforementioned for stirring, mixing, shaking, blending, dispersing, homogenizing, emulsifying, dissolving, diluting, sifting, gasifying, removing, extracting, thickening, distilling, evaporating, drying, milling, comminuting, sharpening, grating, grinding, kneading, pumping, heating, tempering, cooling, annealing and calcining, for mechanical and chemical separation; apparatus, namely, temperature probes, thermometers, thermo couples, torque and viscosity readers, laboratory thermostats, and laboratory calorimeters for measuring, analysing and determining reaction parameters, in particular reaction heat, for determining explosion heat, determining heating value and calorific value, for oxidation decomposition, for electrolysis and for reaction acceleration; apparatus, namely, rheometers for measuring the rheological parameters of substances; apparatus included in this class, namely, vicosimeters, torque monitors, speed monitors, and rheometers for measuring torque, torsional moment, power and viscosity; scientific and/or laboratory apparatus, namely, magnetic stirrers and overhead stirrers for stirring, mixing, kneading and simultaneously measuring the viscosity of the goods to be stirred, mixed and/or kneaded included in this class; scientific and/or laboratory apparatus, namely, rotary evaporators for generating, controlling, regulating and monitoring of vacuums included in this class and apparatus, namely, rotary evaporators for monitoring distillation by means of evaporation; electric and electronic apparatus, namely, torque monitors, temperature monitors, and speed monitors; assemblies for use with optical apparatus, weighing apparatus, and measuring apparatus, namely, optical probes, lab scales and balances, temperature probes, thermometers, thermo couples, and torque and viscosity readers for respectively measuring, controlling, regulating and monitoring of apparatus, machines and laboratory apparatus, namely, for use in production processes, included in this class; electric laboratory apparatus, namely, shakers for laboratory vessels and connectable holders for laboratory vessels, which are detachable and interchangeable with electric laboratory apparatus, in particular for single or multiple test tubes, centrifuge tubes, Eppendorf tubes, petri dishes, microtiter plate, Erlenmeyer flasks; optical laboratory apparatus and instruments, namely, optical probes with cables for measuring speed; laboratory receptacles of glass, synthetic material and metal included in this class; apparatus for the recording, compilation and analysis of data included in this class, namely, laboratory software programs used to collect, receive, and assimilate information; calibration software, recorded computer software; machines for monitoring of vacuums for use in laboratories; laboratory reactors, namely, reduced-scale stirred tank reactors for research and development applications in laboratories and engineering rooms; bioreactors for cultivating microorganisms or cells under pre-defined conditions on a breeding ground, in order to obtain the cells themselves, parts thereof and/or one of the metabolic products thereof