ML6520 Halogen Binocular Asbestos PCM Microscope [REPLACED BY MT6520]

Description

The ML6500 Series features include:

DIN standard eyepieces HWF 12.5X and DIN HWF 12.5X-F focusing eyepieces with Walton & Beckett reticle (Type G-22 with 3:1 aspect ratio)
Mechanical X-Y stage with attached finger assembly
Achromatic condenser N.A. 1.25 with iris, filter tray and 40X positive Phase annulus in sliding mount
Coaxial coarse and fine focus adjustment with graduation, reading 2 microns per division with tension adjustment and safety auto focus stop
Built-in Koehler illuminator with 6V 30W halogen lamp & variable intensity control
GIF ( Green interference Filter) 546nm, 29.8 diameter
Centering Telescope
Stage micrometer 1mm divided into 100 units (each division= 0.01 mm)

PCM (Phase Contrast Microscopy):
Methodology for PCM Analysis – NIOSH 7400 & OSHA ID 160
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)

Phase contrast microscopy, which was discovered by F. Zernike in 1932, is used to help the microscopist who has to observe sample preparations which give low contrast objects. The method enables the phase differences in a specimen to be converted to amplitude differences to give an image of good contrast. It requires the use of phase plate in the objective back focal plane and a phase ring in the condenser system and is usually used with a particular form of illumination.

Required Microscope Equipment: ML6500, MT6500 & MT6800
Series Positive phase contrast microscope with 10X Brightfield and 40X phase objective, GIF (Green Interference Filter), Walton & Beckett Reticle Type-22G, and 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 consist of conventional glass microscope slide with seven sets of parallel line pairs of decreasing widths. The microscope must clearly resolve line pairs 1-3. Line pairs 4-5 must be at least partially visible. Line pairs 6-7 must be invisible. A microscope which fails to meet these requirements is either too low or high in resolution and cannot be used for asbestos identification. Meiji Techno does not sell this slide. In day to day operations it should be remembered that after checking the system for test slide visibility the microscope will need to be correctly adjusted for viewing the membrane filter deposit; this should only require a slight refocusing of the field iris image.

Additional information

Weight	1.0000 kg
Components & Accessories	Included: • ML6520: Binocular PCM (Phase Contrast) Microscopes for Asbestos fiber counting applications. Meiji manufactures these microscopes pursuant to NIOSH 7400 and OSHA ID 160 Reference methods. Built in Koehler illuminator with 6V 30W Halogen lamp and variable intensity control. Equipped with Phase contrast objectives, GIF filter, Walton & Beckett reticle and a centering telescope • MA602: Inclined Binocular head, 30° inclination, rotatable through 360°, dual graduated diopter eyetubes with interpupillary adjustments of 52mm to 72mm • MA489: DIN HWF 12.5X eyepiece, FN 15mm (ea) • MA488W: DIN Focusing HWF 12.5X eyepiece with Walton & Beckett reticle (Factory installed) • MA254: Walton & Beckett reticle, 19mm diameter, 3:1 aspect ratio (Installed in MA413W) • Objective Changer: Smooth operating , ball bearing mounted ergonomic, forward facing quadruple nosepiece (Factory Installed) • MA613: 10X/0.25 SM Semi Planachromat objective, W.D. 6.23mm • MA698: BF S. Plan Achromat Phase objective 40XS/N.A. 0.65 • MA458: Centering Telescope • Stage: Mechanical X-Y stage with attached finger assembly and drop down post, attached stage is 120mm x 140mm rectangular mechanical stage with movements of 75mm X and 40mm Y and is graduated with Vernier readings to 0.1mm, equipped with low positioned drop down coaxial controls. (Factory Installed) • Focusing Adjustment: Coaxial coarse and fine focusing controls with graduation reading 2 microns power division. Incorporates tension adjustment and safety Auto-focus stage stop lever • MA461/10: Achromatic Condenser N.A. 1.25 with iris diaphragm, filter tray and centerable 40X phase annulus in sliding mount • MA759: G.I.F. (Green Interference filter 546nm, 29.8mm diameter) • MA285: Stage micrometer, 1mm divided into 100 units (Each division = 0.01mm) • MA326: Halogen bulb 6V 30W, replacement (Factory installed) • MA327: Fuse 3A, replacement (Factory installed) • MA712: Dust cover for ML6500 Series • Manual: Meiji Techno America ML6500 Manual OPTIONAL COMPONENTS & ACCESSORIES BELOW Viewing Heads: • MA403: Inclined monocular head (Included in ML6510) • MA603: Inclined trinocular head (Included in ML6530) Eyepieces: • MA406: DIN HWF 10X eyepiece, F.N. 15mm (each) • MA413W: DIN focusing HWF 10X eyepiece with Walton and Beckett reticle (Factory Installed) Brightfield Objectives: • MA614: 20X/0.40 SM Semi Planachromat objective, spring loaded, W.D. 3.13mm Phase Condenser & GIF: • MA461/05: Achromatic condenser N.A. 1.25 with iris diaphragm, filter tray and non-centerable 40X phase annulus in sliding mount Bulbs and Fuses: • MA326: Halogen bulb 6V 30W, replacement • MA327: Fuse 3Amp, replacement
Downloads	Double click to read at full screen Download Brochure (PDF) Double click to read at full screen Download Manual (PDF)
Magnification	Eyepieces: • MA406: DIN HWF10X eyepiece, FN 18mm (each) (INCLUDED) • MA413W: DIN focusing HWF 10X eyepiece with Walton & Beckett reticle (INCLUDED) Brightfield Objectives: • MA613: 10X/0.25 SM Semi Planachromat objective, W.D. 6.23mm (INCLUDED) • MA614: 20X/0.40 SM Semi Planachromat objective, spring loaded, W.D. 3.13mm Phase Objectives: • MA698: BF S. Plan Achromat Phase objective 40XS/N.A. 0.65 (INCLUDED)
Specifications	Includes: • ML6520: Binocular PCM (Phase Contrast) Microscopes for Asbestos fiber counting applications. Meiji manufactures these microscopes pursuant to NIOSH 7400 and OSHA ID 160 Reference methods. Built in Koehler illuminator with 6V 30W Halogen lamp and variable intensity control. Equipped with Phase contrast objectives, GIF filter, Walton & Beckett reticle and a centering telescope • MA602: Inclined Binocular head, 30° inclination, rotatable through 360°, dual graduated diopter eyetubes with interpupillary adjustments of 52mm to 72mm • MA489: DIN HWF 12.5X eyepiece, FN 15mm (ea) • MA488W: DIN Focusing HWF 12.5X focusing eyepiece with Walton & Beckett reticle (Factory installed) • MA254: Walton & Beckett reticle, 19mm diameter, 3:1 aspect ratio (Installed in MA413W) • Objective Changer: Smooth operating , ball bearing mounted ergonomic, forward facing quadruple nosepiece (Factory Installed) • MA613: 10X/0.25 SM Semi Planachromat objective, W.D. 6.23mm • MA698: BF S. Plan Achromat Phase objective 40XS/N.A. 0.65 • MA458: Centering Telescope • Stage: Mechanical X-Y stage with attached finger assembly and drop down post, attached stage is 120mm x 140mm rectangular mechanical stage with movements of 75mm X and 40mm Y and is graduated with Vernier readings to 0.1mm, equipped with low positioned drop down coaxial controls. (Factory Installed) • Focusing Adjustment: Coaxial coarse and fine focusing controls with graduation reading 2 microns power division. Incorporates tension adjustment and safety Auto-focus stage stop lever • MA461/10: Achromatic Condenser N.A. 1.25 with iris diaphragm, filter tray and centerable 40X phase annulus in sliding mount • MA759: G.I.F. (Green Interference filter 546nm, 29.8mm diameter) • MA285: Stage micrometer, 1mm divided into 100 units (Each division = 0.01mm) • MA326: Halogen bulb 6V 30W, replacement (Factory installed) • MA327: Fuse 3A, replacement (Factory installed) • MA712: Dust cover for ML6500 Series • Manual: Meiji Techno America ML6500 Manual • Warranty: Limited Lifetime Warranty Card • Product Information: • Manufactured: 100% MADE IN JAPAN • Warranty: LIMITED LIFETIME WARRANTY • Customer Support: 1-(800) 832-0060 (U.S.A Based) • Package Information: • Weight: 28.0 lbs (7.7 kg) • Box Size: 22 x 16 x 14 inches • Footprint: 254mm (D) x 203mm (W) • Monocular head type: 255 mm(D) x 395 mm (H) x 195mm(W) 28.0 lbs. (7.7 kg) • Binocular head type: 255 mm(D) x 395 mm (H) x 195mm(W) 28.0 lbs. (7.7 kg) • Trinocular head type: 255 mm(D) x 440 mm (H) x 195mm(W) 30 lbs. (8.27 kg) Model Head Illumination Eyepieces Objectives Stage Condenser ML6510(DISCONTINUED) Monocular Koehler Illuminator 6V 30W halogen with variable intensity control HW12.5-F DIN Focusing eyepiece with Walton & Beckett reticle SM Plan DIN brightfield 10X and BF S.Plan Achromatic positive phase contrast objective 40XS NA.0.65 Mechanical X-Y stage with attached finger assembly Achromatic condenser NA 1.25 with iris filter tray and 40X positive phase annulus in sliding mount GIF (Green Interference Filter) 546nm, 29.8mm diameter ML6520(DISCONTINUED) Binocular HWF12.5X and HW10X-F DIN Focusing eyepiece with Walton & Beckett reticle ML6530(DISCONTINUED) Trinocular

ML6520 Halogen Binocular Asbestos PCM Microscope [REPLACED BY MT6520]

Description

Additional information

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