 Olympus CX21 Asbestos Phase This system is customized for asbestos use and meets all the requirements for NIOSH. The binocular head is ergonomically inclined for comfort. A Walton-Beckett G-22 graticule along with WF 10x eyepieces is standard with the setup. An Abbe Condenser 1.25 N.A with green filter & insert for phase is included. Focusing is achieved with a low positioned co-axial coarse & fine adjustment mechanism. Two objectives for phase identification are included, one is a 10x NEA bright field, the other is a 40x Phase Plan. A graduated mechanical stage provides for precise slide movement. The light system is 6v 20w halogen w/variable intensity control. This system comes with a five year warranty and is ideal for asbestos inspection. Shipping size is 26" x 20" x 15", weight is 50LBS.
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MT6500 Series PCM for Asbestos Fiber Counting
For NIOSH 7400 & OSHA ID 160 Reference
PCM Asbestos Microscopes
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.
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.
All Meiji Microscopes come with a life time limited warranty. Box size 22" x 16" x 14" weight 30LBS |
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 Olympus CX31 Asbestos Phase
This system is customized for asbestos use and meets all the requirements for NIOSH. The binocular head is ergonomically inclined for comfort. A Walton-Beckett G-22 graticule along with WF 10x eyepieces is standard with the setup. An Abbe Condenser 1.25 N.A with green filter & insert for phase is included. Focusing is achieved with a low positioned co-axial coarse & fine adjustment mechanism. Two objectives for phase identification are included, one is a 10x NEA bright field, the other is a 40x Phase Plan. A graduated mechanical stage provides for precise slide movement. The light system is 6v 30w halogen w/variable intensity control. This system comes with a five year warranty and is ideal for asbestos inspection. Shipping size dimensions are 26" x 20" x 15" weight 50LBS.
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MT 6100 Series Asbestos PLM Microscopes
For Bulk Fiber Identification (NIOSH 9002)
Meiji Techno offers the MT6100 Series PLM ( Polarized Light) Microscopes for Asbestos fiber counting applications. These microscopes are manufactured persuant to NIOSH 9002 Reference methods. There are three models to choose from, monocular, binocular or trinocular bodies. Each model comes with SM Plan DIN brightfield POL objectives, rotatable stage with 360 degree graduations, achromatic condenser and built-in Koehler illuminator as standard equipment. All specifications of the models are identical except for the body type. Meiji microscopes are quality precision instruments engineered to provide the finest quality in the industry today.
Methodology for PLM Analysis: NIOSH 9002
This method is useful for the qualitative identification of asbestos and the semi-quantitative 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.
All Meiji Microscopes come with a life time limited warranty.
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