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Special Applications
These are just a few examples of the special applications available.
Contact us to discuss your specific requirements and applications.
Asbestos Determination
PLM (Polarized Light Microscopy)
For Bulk Fiber Identification
Methodology for PLM Analysis: NIOSH 9002
This method is useful for the qualitative identification of asbestos and the semi-quantative determination of asbestos in bulk samples. This method measures the percentage of asbestos as perceived by the analyst in comparison to standard projections, photographs and experience. The quality of the results are dependant upon the skill and judgment of the operator.
Required Microscope Equipment
 Polarized Light Microscope 100X thru 400X with 10X Dispersion Staining Objective (see below)
 Stereo microscope 10X thru 45X.
Dispersion Staining Objectives
Dispersion staining is a process by which color is imparted to colorless objects with the refractive index measured and used to identify the object being tested. The Meiji Dispersion Staining Objective is a 10X pre-centered central stop objective for 160mm tube length microscopes with RMS mounting threads. The technique differentiates between the refractive indices of the particulate solid and the liquid medium in which the solids are immersed. This method is most commonly used in asbestos fiber testing. The central stop positioned inside the Dispersion Staining Objective achieves certain colors at the perimeter of the fibers depending on the refractive indices between the fiber and the suspension medium.
Asbestos Fiber Counting by
Phase Contrast Microscopy
Methodology for PCM Analysis: NIOSH 7400 & OSHA ID160
Phase contrast microscopy is the method that is primarily used for estimating asbestos concentrations of airborne fibers. This method is quick and can be performed on-site for a rapid determination of concentrations of asbestos fibers in the air. Phase contrast microscopy does not positively differentiate between asbestos and other fibers. Positive identification of asbestos fiber must be performed using PLM (Polarized Light Microscopy) or Electron Microscopy (Method 7402)
Required Microscope Equipment
Positive phase contrast microscope with 10X Brightfield and 40X Phase objectives, GIF (Green Interference Filter), Walton & Beckett reticle Type-22G and a stage micrometer with 0.01mm divisions.
Required Test Slide
The HSE/NPL Mark II Phase Shift Test Slide checks or standardizes the visual detection limits of the phase contrast microscope. The HSE/NPL Test Slide consists of a conventional glass microscope slide with seven sets of parallel line pairs of decreasing widths. The microscope must clearly resolve line pairs 1 thru 3. Line pairs 4 and 5 must be at least partially visible. Line pairs 6 and 7 must be invisible. A microscope which fails to meet these requirements is either too low or too high in resolution and cannot be used for asbestos detection.
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New Models from Meiji Techno
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PLM - PCM Combined Asbestos Microscopes
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Meiji Techno offers the MT6800 Series Combo PLM - PCM (Polarized Light and Phase Contrast) Microscopes for Asbestos fiber identification applications. Meiji Techno manufactures these microscopes pursuant to NIOSH 9002 Reference methods and NIOSH 7400 and OSHA ID 160 Reference methods.
Each model comes with Strain free Plan DIN brightfield POL objectives, rotatable stage with 360 degree graduations, POL/PHASE/Dispersion Staining Abbe condenser and built-in Koehler illuminator as standard equipment.
VIEWING HEADS
Model MA952 is the Siedentopf-type binocular head and Model MA953 is the trinocular head for camera integration. Each head has the 23.2mm eyetubes inclined at 30 degrees with the left eyetube having graduated diopter settings.
The interpupillary distance is adjustable between 53mm - 75mm. An 80/20 beamsplitter for the trinocular tube can be engaged for photo work.
Each head has the new integrated reticle angle compensation system. When the IP distance or number is changed, the crossline reticle remains perpendicular in the FOV.
EYEPIECES
10X Widefield High Eyepoint eyepiece F.N. 20, 10X Widefield High Eyepoint focusable eyepiece that has a 21mm crossline reticule and guide pin, and 10X Widefield High Eyepoint Compensating Focusing eyepiece, F.N. 20 with Walton & Beckett reticle are standard.
STAGE
Ceramic coated 360 degree rotatable fully indexed stage with vernier and stage clips.
CONDENSER
Strain free Abbe condenser, N.A. 1.25 with centerable annuli for 10X, 20X, 40X phase or 10X, 20X, 40X dispersion staining objectives in sliding mount, with iris diaphragm and dovetail mount.
ILLUMINATION
Powerful 30 watt transmitted light Koehler halogen illumination provides enhanced image quality and brightness for the observation of specimens.
ACCESSORIES
All MT6800 Series models come with a first order red compensating plate (also called Gypsum or Sensitive Tint Plate), an analyzer in sliding mount, Bertrand lens, Blue Clear and Green Interference filters, Centering Telescope, and Stage Micrometer.
The specifications table below shows the features of each model.
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Combined PLM / PCM Asbestos Microscope
Model
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Head
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Eyepieces
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Objectives
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Stage
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Condenser
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Illumination
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MT6820
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Binocular
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(1) KHW10XCP Focusing with guide pin and crossline reticle, (1) KHW 10X, F.N. 20 O.D. 23.2mm
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DIN Strain Free Plan 10x, 20x, & 40x, & 10x Dispersion Staining, & U. Plan 40x Phase
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Rotatable with 360 degree graduations and vernier
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Strain Free Abbe N.A. 1.25 w/ slider for dispersion staining and phase objectives
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Transmitted light Koehler Illuminator 6V 30W halogen auto voltage sensing with intensity control.
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MT6830
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Trinocular
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PLM - Polarized Light Asbestos Microscopes
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Meiji Techno offers the MT6100 Series PLM (Polarized Light) Microscopes for Asbestos fiber identification applications. Meiji Techno manufactures these microscopes pursuant to NIOSH 9002 Reference methods.
Each model comes with Strain free Plan DIN brightfield POL objectives, rotatable stage with 360 degree graduations, achromatic condenser and built-in Koehler illuminator as standard equipment.
The specifications table below shows the features of each model.
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Model
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Head
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Eyepieces
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Objectives
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Stage
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Condenser
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Illumination
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MT6120
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Binocular
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(1) KHW10XCP Focusing with guide pin and crossline reticle, (1) KHW 10X, F.N. 20 O.D. 23.2mm
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DIN Strain Free Plan 10x, 20x, & 40x, & 10x Dispersion Staining
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Rotatable with 360 degree graduations and vernier
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Strain Free Abbe N.A. 1.25 w/ slider for dispersion staining objectives
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Transmitted light Koehler Illuminator 6V 30W halogen auto voltage sensing with intensity control.
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MT6130
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Trinocular
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PCM - Phase Contrast Asbestos Microscopes
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Meiji Techno offers the MT6500 Series PCM (Phase Contrast Microscopes) for Asbestos fiber counting applications. Meiji Techno manufactures these microscopes pursuant to NIOSH 7400 and OSHA ID 160 Reference methods.
Each model comes with centering telescope, 1mm stage micrometer, GIF 546nm filters and built-in Koehler illuminator as standard equipment.
The specifications table below shows the features of each model.
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Model
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Head
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Eyepieces
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Objectives
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Stage
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Condenser
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Illumination
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MT6520
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Binocular
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(1) KHW 10X Focusing E.P. F.N. 20, with W&B Reticle, (1) KHW 10X, F.N. 20
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DIN U. Plan brightfield 4x, 10x and U. Plan positive phase contrast objective 40x
NA: 0.65
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Ceramic coated flat-top stage with attached finger assembly
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Abbe condenser NA 1.25 with iris, centerable 20X & 40X positive phase annulus, dovetail mount
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Transmitted light Koehler Illuminator 6V 30W halogen auto voltage sensing with intensity control.
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MT6530
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Trinocular
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Mineralogy
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Petrographic Microscopes from Meiji Techno
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Optional Point counting stage
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MT9000 Series. Meiji Techno's brand new transmitted and incident light polarized microscopes. The MT9000 Series employs all new and improved strain free S.Plan optics. Meiji Techno's ICOS™ (Infinity Corrected Optical System) makes the study of thin sections and other mounted samples fast and easy while delivering an excellent cost-to-performance ratio. The MT9000 Series features include:
 Computer Aided Design
 Ergonomically positioned controls
 Comfortable Siedentopf viewing heads
 30W Transmitted Koehler Halogen Illuminator
 30W Vertical Incident Koehler Halogen Illuminator (MT9920 & MT9930)
 Strain Free Optics Throughout
Brightfield and Polarized Light observation modes
Optional Point Counting Stage
MT9200 Series Transmitted light only
Model
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Head
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Illumination
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Eyepieces
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Objectives
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Stage
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Condenser
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MT9200
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Bino.
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Transmitted 30W Koehler
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KHWF10XCP FN20
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Strain Free S.Plan 4x, 10x, 40xS
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Rotatable 360 degree, graduated with vernier
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Strain Free Abbe NA 1.25 with iris in dovetail mount
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MT9300
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Trino.
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MT9900 Series Incident and Transmitted Brightfield Models with Focusable Bertrand lens, Rotatable Analyzer, and 3-Position Slider with 1st Order Red, 1/4 Wave Plate, Brightfield Position.
Model
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Head
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Illumination
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Eyepieces
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Objectives
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Stage
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Condenser
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MT9920
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Bino.
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Transmitted 30W Koehler & 30W Vertical Koehler Incident
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KHWF10XCP FN20
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Strain Free S.Plan 4x, 10x, 40xS
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Rotatable 360 degree, graduated with vernier
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Strain Free Abbe NA 1.25 with swing-out top lens, with iris in dovetail mount
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MT9930
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Trino.
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MT9930 with Transmitted and Reflected Light and Optional Camera system.
Protein Crystallography
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This setup for Protein Crystallography,
consists of ;
Microscope base with tiltable mirror for direct or oblique illumination,
Fiberoptic light source for cold light, no heat gets to the specimen,
Polarizer and rotatable Analyzer to maximise viewing conditions,
Stereozoom body, 7x to 45x magnification, SWF 10x eyepieces
Eyepiece reticle for measurement
Camera port for 35mm, Video or Digital cameras.
Other models with different heads are also available.
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Micro Measurement
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An example of a Microscope setup for micro measurement, complete with Digital micrometers and x,y stage, fiberoptic illumination.
Let us know your requirements, we can tailor a system for your specific application.
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Surface Mount Devices
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Setup for SMD Inspection ( Surface Mounted Devices)
For examination of surface mounted devices on large or small circuit boards.
Contact us to discuss your requirements.
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