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Kern & Sohn OBF 121 Binocular Microscope Achromatic 4x/10x/40x/100x WF10x18 20W Halogen Specs
| Brand | Kern & Sohn |
| Full Model Code / SKU | OBF 121 |
| Country of Origin | Germany |
| Microscope Type | Advanced Clinical and Laboratory Brightfield Binocular Compound Microscope System |
| Optical System Type | Finite 160mm Corrected Optical Pathway Lens Design System |
| Observation Tube Type | Binocular Head Unit with ergonomic structural layout finish |
| Tube Inclination & Rotation | 30° inclined viewing track, 360° rotatable head, adjustable individual interpupillary controls 50-75mm; diopter adjustment on left tube eye socket |
| Eyepiece / Field of Number | WF 10x / 18 mm (Paired set, standard configuration alignment) |
| Nosepiece Design | Revolving quadruple (4-position) reverse-facing objective turret housing for comfortable specimen access |
| Objectives Classification | Achromatic Corrected Objective Lens Line (Anti-fungus treated) |
| Objectives Magnification Breakdown | Achromatic series tracking: 4x/0.10, 10x/0.25, 40x/0.65 spring-loaded, and 100x/1.25 spring-loaded oil-immersion micro pathways |
| Total Magnification Range | 40x, 100x, 400x, and 1000x standard optical calculation limits |
| Focusing Type & Graduation | Coaxial coarse and fine adjustment block knobs operating a heavy internal alignment pathway; fine tracking graduation 2 micrometers |
| Stage Dimensions & Surface Coating | Oversized double-layer mechanical stage platform measuring approx. 145 x 130 mm with hard protective surface coating and dual slide specimen holder clips |
| Stage Travel Range & Controls | Precision coaxial X-Y axis mechanical translation range approx. 75 x 40 mm with low-positioned right-hand controls |
| Condenser Type & Numerical Aperture | Abbe Condenser NA 1.25 equipped with adjustable iris diaphragm, focus adjustment rack mechanics, and filter slot track structure |
| Illumination Transmitted Type | Adjustable 6V 20W Halogen sub-stage transmitted light module tracking classic high-render bottom brightfield paths |
| Illumination Epi-EPI/Reflected | None |
| Light Intensity Management | Electronic continuous variable rotary dimmer control wheel on side panel for tracking target brightness |
| Camera Port / C-Mount Adapter Split | None (Binocular configuration; requires digital eyepiece adapter for image capture logs) |
| Contrast Methods Capability | Translucent target classic brightfield inspection tracking, full oil-immersion biological mapping |
| Power Supply & Voltage Input | Internal universal 100-240V AC stabilization power module line links |
| Physical Dimensions & Net Weight | Base assembly 395 x 200 mm, overall frame height 380 mm, complete assembly net weight approx. 6.5 kg |
| Standard Package Accessories Included | OBF 121 binocular frame stand, four achromatic objectives, pair of WF 10x/18mm eyepieces, immersion oil flask, power cable, dust cover, manual |
| Primary Application & Environment | Medical clinical diagnostics labs, pathology screening stations, professional veterinary routine check benches, university biology educational blocks |






















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