Automated Rotary Microtome M-250

for paraffin-embedded tissue sectioning

The M-250 microtome from Myr uses state-of-the-art technology and embodies the company´s commitment to quality and excellence in the microtomy. It provides the operational convenience and the stability required for outstanding sectioning in routine, research and industry applications.

Documentation

User friendly interface

Full color TFT 7” display with PCAD (projected capacitive) touchscreen. Size and tilt of the display allow an easy and effortless selection of the parameters and increase user safety.

All required parameters and functions are available on the main screen: section mode, speed, section and trimming thickness, section counter, section sum, remaining travel, retraction, coarse feed, memory function and cutting window.

Memory function

MEM key for higher productivity, to retrieve previous cuttings settings when working with uniform paraffin blocks. By simply pressing a key, the specimen moves into the stored MEM position.

Specimen orienting head

Thanks to a blocking mechanism the easy to operate change system allows to work with different specimen clamps.

Indication of 0-position in x and y direction by palpable “click” for the precise alignment of the specimen.

Motorized specimen feed

Precise, motorized coarse feed in two modes, continuous and step. In continuous mode, speed is selectable between slow and fast to ensure a controlled specimen approach.

Quick release specimen clamp

Cutting-edge design of the specimen clamp that prevents building up of dirt and facilitates operations with the microtome.

The retraction function selectable between 5 -250μ, which can turn off, prolongs the life of the blade. (Default value 40 μ)

Spacious waste tray

Special antistatic coating prevents paraffin adhesion and minimizes the cleaning time. Ergonomic design with surface for arm rest. Wide area on the top of the microtome for the storage of tools.

Knife carrier system

Blade holder slides sideways in both directions allowing the use of the entire cutting edge. It accepts low- and high-profile blades.

All blade holders are equipped with finger guard for safety reasons.

Electronic brake

Once the automatic sectioning mode is paused, the electronic brake automatically activates, or alternatively, when sectioning manually, it can be activated by pressing the brake key on the touchscreen.

Sectioning

The instrument is equipped with a simple and intuitive interface for quick learning.

The high cutting quality helps to obtain precise sections while the smooth-working handwheel minimizes user fatigue, allowing you to improve your performance and have greater productivity.

Lateral button

Embedded in the left side of the automatic microtome for speed/start-stop functions. It is possible to adjust the cutting speed while the motorized cut is running.

Control panel

The entire touch screen functions are integrated into the external control panel for higher adaptability to technicians’ preferences. Optionally available.

Smooth and ergonomic handwheel

The handwheel is perfectly balanced thanks to an innovating counterweight system and can
be locked in any angular position. Cutting can be done by turning the handwheel clockwise or counterclockwise, and its motion smoothness minimizes user’s fatigue.

Technical Data Microtome M-250

Section thickness
Total range in (μm)	0,5 – 100
Thickness settings in (μm)
	0,5 – 5 in increments of 0,5
	5 – 20 in increments of 1
	20 – 60 in increments of 5
	60 – 100 in increments of 10
Trimming
Total range in (μm)	1 – 600
Thickness settings in (μm)
	1 – 10 in increments of 1
	10 – 20 in increments of 2
	20 – 50 in increments of 5
	50 – 100 in increments of 10
	100 – 600 in increments of 50
Specimen feed (mm)	28 ± 1 mm
Vertical stroke (mm)	72 ± 1 mm to allow sectioning of mega-cassettes
User interface	7” capacitive touchscreen display
Operating modes	Rotational or Rocking (selectable)
Specimen retraction	Optional function that can be deactivated
Total range in (μm)	5 – 250 μm (selectable in 1 μm increment)
	5 predefined values: 20, 30, 40, 60, 80 μm
	Default value: 40 μm
Motorized coarse feed (μm/sec)
	300 (slow speed forward)
	800 (fast speed forward)
	1800 (ultrafast speed backward)
	Additional function for forward/backward coarse feed in step mode
Blade Holder Type	Two in One for high- and low-profile blades
Sectioning Speed	0,5 – 450 mm/sec
Max. specimen size	50x60x40 mm (w x h x d) Super cassette clamp 68x48x15 mm
Specimen orientation	± 8º horizontal and vertical
	Rotational capability: 360º
	Indication of 0-position by means of click (x and y direction)
Power requirements	100-240 VAC / 50-60Hz
Consumption	40 VA
Dimensions
Width	465 mm
Depth with tray	540 mm
Height	298 mm
Weight	39,00 kg

Optional accessories

M250-1000	Footswitch
M250-2200	External Control Panel
M240-2100	Standard specimen clamp 55×50 mm
M240-2200	Universal specimen clamp (Quick Release Clamp)
M240-2300	Universal specimen clamp (Super mega-cassettes)
M240-4002C	Knife carrier for disposable blades, model MR
M240-4101	Knife carrier for disposable blades, model ME

Ordering information

M250-01	Microtome with knife carrier MR (for High and Low profile blades, lateral adjustment), quick release clamp.
M250-02	Microtome with knife carrier MR, (for High and Low profile blades, lateral adjustment), standard specimen clamp.
M250-03	Microtome with knife carrier ME (for High and Low profile blades, lateral adjustment), quick release clamp.
M250-04	Microtome with knife carrier ME, (for High and Low profile blades, lateral adjustment), standard specimen clamp.