Senior Precision Rotary Microtome is the most precise and uniform sectioning equipment for Medical Colleges. Universities, Research Laboratories, Hospitals and Educational Institutions. The internal mechanism and knife holder rests on a heavy-duty and rigid base to render a shake proof operation. A protective aluminium cover is hinged to the base and swings back so that the interior parts are completely exposed for convenient setting. cleaning, lubrication etc. Feed mechanism is dependent upon the vertical movement of the object block. With every complete revolution of the counter balanced drive wheel, the feed pawl engages with the teeth of the ratchet gear which moves towards and advances the object holder through a cone inclined plane mechanism in precise increments so that the tissues can be sectioned even to a thickness of one micron. When the limit of the feed reaches at the end, a safety device automatically disengages the feed mechanism to prevent jamming and avoid damage to the feed screws.

The feed indicator, graduated in microns, is conveniently located in the front for instant references and its setting is controlled by a knurled knob at the back of the microtome. The sturdy knife holder in addition to knife elevating and levelling provides lateral movement for complete use of knife edge. The angle adjustable up to 30° is indicated on a reference scale. The knife supplied with the Microtome is fabricated from high carbon fine grain tool steel which is heat-treated for proper temper & tested for Micro structures.

A lever is provided to lock counter balanced drive wheel and specimen block is stopped at the top of its excursion, providing ample clearance space for safety insert and removal of knife and block holders. A quick flip of the lever releases the drive wheel.

Feed adjustments :  1-50 microns

Overall Dimensions :  40 x 38 x23 cms.

Minimum Thickness :  One micron

Total Feed excursions :  28 mm

Net Weight : 30 Kgs. approx.

Gross Weight : 42 Kgs. approx.

The complete unit packed with the following accessories in a wooden case:

• Object Holders (3 Nos.) 1 Set
• Knife 120mm in a box 
• No. Dust Cover 1 No.
• Honing Stone 1 No.
• Operating Manual 1 No

Optional Accessories : Razor Attachments, Microtome Razors/Knives, L-moulds, Object Holders, Honing Stones, Leather Straps, Micro abrasives, Knife backs and handles Lubricating Oil • Razor/knife Sharpeners etc. 

OPERATING AICRCITCIM

The Microtome is actuated by turning the lever inside the  Microtome. A head locking arrangement wheel lock is provided to lock the wheel for preventing undesired movement of teed mechanism. The Rotary Microtome's should not be run fastest than sixty cuts per minute. Each material sectioned on the microtome has an optimum cutting speed which should be determined experimentally; as it depends, on the nature of the material, The cutting edge of the knife and the thickness of the section. Sections should be made at the best technical results. The distortion of the section depends on the nature of the knife edge, the tilt of the knife the temperature, material section, and embedding.

POSITONING THE KNIFE IN THE MICROTONE

The angle between the two cutting facets is established by the honing back. The knife must be tilted so that there is clearance between the cutting facet next to the block of tissue and the surface of the block of tissue. If the tilt is not adequate, no section results. Skipping of a section, or the cutting of alternate thick and thin section is usually due to insufficient or to excessive tilt. The tilt angle between the straight edge and the surface of block is the clearance angle. All of the materials so far Investigated suggest that the tilt angle ranges between 30 to 80 knife clearance. Within this limited ranges to resistance to cutting is minimal. Also the angle between the outer facet and the line perpendicular to the block at the point of cutting, called the Rake angle, is also important. For hard tissues, rake angles of 22-25 are used, and for soft tissues the rake angle may be increased to 45.

DISENGAGE AND RE-ENGA% EEDING MECHANISM

When the limit of the feed has been reached the feed block pushes against the pin and this disengages the feeding mechanism. To re-engage, simply rotate the Reversing Handle clockwise upto the limit and pull the lever up. The friction on the feed screw may become less after considerable use and gives irregular thickness cut. Tighten the friction collar against bracket to increase the tension of feed screw. Then increase the friction against the ratchet wheel by turning the square headed screw clockwise, not more than one turn at time. The instruments are well made and, with reasonable care, will last a long time before any adjustment is required. If these simple adjustments do not correct the difficulty, the Microtome should be sent to the factory for re-adjustments, where proper tools and testing methods are available. The latest designed protective cover is hinged to the base and swings back to completely expose the interior parts, thus permitting easier access for cleaning an lubrication. The feed indicator is conveniently located in the front and feed setting is controlled by a knurled knob at the back of the Microtome. The sturdy Link elevating and levelling adjustment provide lateral movement for complete. 

SPECIFICATIONS :

Section Thickness Setting Range: 0.25um-100um 0.25um-2um in increment .25um and gum-5um in increment 0.5um and 5um-10um in  increment lum and 10um-30um in increment gum and 30um-60 um in  increment 5um and 60um-100um increment 10um. 

Trimming Thickness Setting Range: 1-600um 1-10um increment 1 I 1um, 010-020um increment 2um, 020050um increment 05um-150um increment 10um 150-600um increment 50um.

Retraction Setting Range: 0-50 in step off lum

TECHNICAL SPECIFICATIONS :

• Horizontal Feed 25mm.
• Vertical Specimen Stroke 70mm.
• Specimen Holder Rotation at angle within 360 degrees.
• Movement range of the base of specimen holder 65mm (front to back).
• Specimen clamp rotation at any angle within 360 degree.
• Specimen orientation XY-8'.
• Minimum setting of sectioning thickness 0.25um.
• I Maximum specimen size 70x70mm.
• Precision error-1%.
• Working voltage AC 220V=10% 50Hz (standard model) AC 110V - 
• 10% 60Hz.
• Power 150W. 

Senior Precision Rotary Microtome is the most precise and uniform sectioning equipment for Medical Colleges. Universities, Research Laboratories, Hospitals and Educational Institutions. The internal mechanism and knife holder rests on a heavy-duty and rigid base to render a shake proof operation. A protective aluminium cover is hinged to the base and swings back so that the interior parts are completely exposed for convenient setting. cleaning, lubrication etc. Feed mechanism is dependent upon the vertical movement of the object block. With every complete revolution of the counter balanced drive wheel, the feed pawl engages with the teeth of the ratchet gear which moves towards and advances the object holder through a cone inclined plane mechanism in precise increments so that the tissues can be sectioned even to a thickness of one micron. When the limit of the feed reaches at the end, a safety device automatically disengages the feed mechanism to prevent jamming and avoid damage to the feed screws.

The feed indicator, graduated in microns, is conveniently located in the front for instant references and its setting is controlled by a knurled knob at the back of the microtome. The sturdy knife holder in addition to knife elevating and levelling provides lateral movement for complete use of knife edge. The angle adjustable up to 30° is indicated on a reference scale. The knife supplied with the Microtome is fabricated from high carbon fine grain tool steel which is heat-treated for proper temper & tested for Micro structures.

A lever is provided to lock counter balanced drive wheel and specimen block is stopped at the top of its excursion, providing ample clearance space for safety insert and removal of knife and block holders. A quick flip of the lever releases the drive wheel.

Feed adjustments :  1-50 microns

Overall Dimensions :  40 x 38 x23 cms.

Minimum Thickness :  One micron

Total Feed excursions :  28 mm

Net Weight : 30 Kgs. approx.

Gross Weight : 42 Kgs. approx.

The complete unit packed with the following accessories in a wooden case:

• Object Holders (3 Nos.) 1 Set
• Knife 120mm in a box 
• No. Dust Cover 1 No.
• Honing Stone 1 No.
• Operating Manual 1 No

Optional Accessories : Razor Attachments, Microtome Razors/Knives, L-moulds, Object Holders, Honing Stones, Leather Straps, Micro abrasives, Knife backs and handles Lubricating Oil • Razor/knife Sharpeners etc. 

OPERATING AICRCITCIM

The Microtome is actuated by turning the lever inside the  Microtome. A head locking arrangement wheel lock is provided to lock the wheel for preventing undesired movement of teed mechanism. The Rotary Microtome's should not be run fastest than sixty cuts per minute. Each material sectioned on the microtome has an optimum cutting speed which should be determined experimentally; as it depends, on the nature of the material, The cutting edge of the knife and the thickness of the section. Sections should be made at the best technical results. The distortion of the section depends on the nature of the knife edge, the tilt of the knife the temperature, material section, and embedding.

POSITONING THE KNIFE IN THE MICROTONE

The angle between the two cutting facets is established by the honing back. The knife must be tilted so that there is clearance between the cutting facet next to the block of tissue and the surface of the block of tissue. If the tilt is not adequate, no section results. Skipping of a section, or the cutting of alternate thick and thin section is usually due to insufficient or to excessive tilt. The tilt angle between the straight edge and the surface of block is the clearance angle. All of the materials so far Investigated suggest that the tilt angle ranges between 30 to 80 knife clearance. Within this limited ranges to resistance to cutting is minimal. Also the angle between the outer facet and the line perpendicular to the block at the point of cutting, called the Rake angle, is also important. For hard tissues, rake angles of 22-25 are used, and for soft tissues the rake angle may be increased to 45.

DISENGAGE AND RE-ENGA% EEDING MECHANISM

When the limit of the feed has been reached the feed block pushes against the pin and this disengages the feeding mechanism. To re-engage, simply rotate the Reversing Handle clockwise upto the limit and pull the lever up. The friction on the feed screw may become less after considerable use and gives irregular thickness cut. Tighten the friction collar against bracket to increase the tension of feed screw. Then increase the friction against the ratchet wheel by turning the square headed screw clockwise, not more than one turn at time. The instruments are well made and, with reasonable care, will last a long time before any adjustment is required. If these simple adjustments do not correct the difficulty, the Microtome should be sent to the factory for re-adjustments, where proper tools and testing methods are available. The latest designed protective cover is hinged to the base and swings back to completely expose the interior parts, thus permitting easier access for cleaning an lubrication. The feed indicator is conveniently located in the front and feed setting is controlled by a knurled knob at the back of the Microtome. The sturdy Link elevating and levelling adjustment provide lateral movement for complete. 

SPECIFICATIONS :

Section Thickness Setting Range: 0.25um-100um 0.25um-2um in increment .25um and gum-5um in increment 0.5um and 5um-10um in  increment lum and 10um-30um in increment gum and 30um-60 um in  increment 5um and 60um-100um increment 10um. 

Trimming Thickness Setting Range: 1-600um 1-10um increment 1 I 1um, 010-020um increment 2um, 020050um increment 05um-150um increment 10um 150-600um increment 50um.

Retraction Setting Range: 0-50 in step off lum

TECHNICAL SPECIFICATIONS :

• Horizontal Feed 25mm.
• Vertical Specimen Stroke 70mm.
• Specimen Holder Rotation at angle within 360 degrees.
• Movement range of the base of specimen holder 65mm (front to back).
• Specimen clamp rotation at any angle within 360 degree.
• Specimen orientation XY-8'.
• Minimum setting of sectioning thickness 0.25um.
• I Maximum specimen size 70x70mm.
• Precision error-1%.
• Working voltage AC 220V=10% 50Hz (standard model) AC 110V - 
• 10% 60Hz.
• Power 150W.