The SIGETA MB-303 40x-1600x LED Trino is a versatile bio microscope with a trinocular optical head. Designed for histological, bacteriological and cytological examination of biomaterial, it allows a camera installation for photo-fixation of laboratory experiments. The optics of the microscope generates a detailed, full colour and bright picture, making the MB-303 suitable for educational purposes as well.
The microscope is supplied with a set of 4x, 10x, 40x, 100x Extra Achromat class achromatic objectives (with improved field curvature correction). The lenses are made to German DIN standard, with a parfocal height of 45mm. The SIGETA MB-303 40x-1600x kit also includes 2 pairs of 10x and 16x wide-angle eyepieces: depending on the lens and eyepieces combination the total magnification of the optical system can be from 40 to 1600x.
The trinocular microscope head can be freely rotated to either side so that the results can be shown to external observers. The observation tubes are tilted at a 45° angle and the camera adapter is mounted vertically in the head on a threaded mount. The distance between the observation tubes is adjustable between 55-75 mm with the binoculars shift/break.
The SIGETA MB-303 Biological Microscope has a precise and reliable focusing system. The coarse/fine focus assemblies are located on the sides of the housing. The same shaft, coaxial to the focus wheels, features an adjustment locking ring on the left side of the housing and a tension control mechanism on the right. Sharpness is brought into focus by changing the height of the objective table with an adjustment range of 0...25mm.
The stage for the slides is of considerable size - 14 x 15.5 cm. The slide is moved mechanically along the stage table using micrometric slide calipers. The movement limits are 7x5 cm.
The microscope illumination system consists of a 1W LED lamp, a manifold and a N.A. 1.25 condenser with a ring for a light filter. The aperture diameter of the iris aperture diaphragm ranges from 2 to 30 mm.
The list of technical specifications indicates that the SIGETA MB-303 trinocular microscope is one of the most successful models in terms of functionality, optical quality and easy adjustment, capable of productive work in any laboratory.