Rotary Microtome HM 355 S
MICROM International GmbH
Robert-Bosch-Str. 49
D- 69190 Walldorf
PART 1 INTRODUCTION
1-1 DESCRIPTION OF THE ROTARY MICROTOME HM 355 S
The Rotary Microtome HM 355 S from MICROM International GmbH is a universal heavy duty microtome
for especially sophisticated paraffin, hard- and semi-thin sectioning techniques in biology, medicine and
industry.
The HM 355 S sets new ergonomical standards concerning operation and comfort. The instrument is
equipped with a section waste tray with integrated arm rest, which is built around the knife carrier for direct
collection of section waste.
This model can be equipped with all specimen clamps and knife carriers of the rotary microtome
HM 300 series. This also includes segment arc, universal specimen holder and glass knife carrier S for glass
and diamond knives. In addition, the stereomicroscope, the large field magnifier, the Histo Collimator and the
backlighting system can be adapted.
Further additional equipment for the HM 355 S are the storage unit with cooling insert for cassettes, brushes
and tweezers as well as the automatic approach system.
The HM 355 S will cut sections in a range from 0,5 up to 100 microns. For the protection of knife and
specimen, the instrument retracts the specimen at the end of the cut. If desired, the function <retraction> can
be turned off.
The electronically controlled motor drive with precision tachogenerator guarantees an extremely fast
adjustment to section force variations and constant cutting speed. It also ensures optimal section quality in
each field of application. This results in a constant cutting speed over the entire cutting stroke.
The motorized coarse feed system allows both the continuous and graduated specimen forward and
backward travel with three different speed settings. This way specimen and knife edge distance can be
adjusted quickly.
A trimming function with defined steps from 5 to 500 microns permits the fine adjustment up to the first cuts
and results in larger section thicknesses when trimming.
The operating panel is placed on the left side of the microtome. It can be removed and used separately, also
on the left side of the instrument. For this, the operating knobs can be removed and installed on the other side
of the operating panel. The touchpad keyboard is clearly arranged for easy and safe operation. The selected
section thickness, trimming thickness, section counter, sum of section thicknesses and remaining travel to the
front end position as well as the speed of the coarse feed and the speed of the cutting movement are
indicated on the display of the operating panel.
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