The Levenhuk MED 25B microscope is a binocular model equipped with two condensers, one for brightfield and one for darkfield. Both condensers can be used for oil-immersion observations. The microscope is designed for professional use in the medical, microbiological, biochemical and other scientific fields. It can be used for research, diagnostics or educational purposes. This microscope allows for observations at magnifications of up to 1000x; it can be configured with Köhler illumination and enables the study of the intricate details of microscopic structures.
The trinocular head rotates through 360°. The eyepiece tube is inclined at 30° to make prolonged observations more comfortable. The kit includes wide-field eyepieces with 10x magnification. They are fitted with dioptre adjustment, so that the observer’s visual defects can be individually compensated for. The objective revolver contains four plan-achromatic objective lenses, which provide an aberration-free image; the 100x objective allows for observations using oil immersion. Two of the objectives are fitted with a protective spring mechanism. The optics of all accessories have undergone an anti-fog treatment.
Specimens are positioned on the stage using a mechanical translator. The double-layer stage can be moved along two axes. Focus adjustment is achieved by turning the two knobs for fine and coarse focus adjustment. The mechanism’s step size is very small, allowing for smooth focus adjustment. The specimens are illuminated from below by a 20 W halogen lamp. The illumination system allows for brightness adjustment. The light passes through an Abbe condenser with an iris diaphragm, onto which filters can be fitted (three filters are included in the kit). Furthermore, a dark-field condenser can be fitted to the microscope. This is also included in the kit and is suitable for use with oil immersion.
The lighting is powered by the AC mains supply.
Features:
•
Binocular head• Plan-achromatic optics offer magnifications from 40x to
1000x• Anti-fog coating on all
optical surfaces• The 20 W halogen lamp is powered by the AC mains supply•
Köhler illumination
available• Capable of both brightfield and darkfield
observation
The kit includes:
• Microscope base with
stand•
360° rotatable binocular head• Planachromatic objective lenses: 4x, 10x, 40xs, 100xs (oil immersion) with anti-fog coating•
Wide-field eyepieces: WF10x/18 mm with anti-fog coating (2 pcs.)
• Abbe condenser, N.A. 1.25, with iris diaphragm and
filter holder• Dark-field condenser (oil)
• Filters: blue, green, yellow•
Vial of
immersion oil• Fuses (2 pcs.)
• Power cable for the
microscope• Dust cover•
User manual and lifetime
warranty
Warning:
Please refer to the specifications table for the correct mains voltage and never attempt to connect a 110 V device to a 220 V socket, or vice versa, without using a transformer. Please note that the mains voltage in the United States and Canada is 110 V, whilst in most European countries it is 220–240 V.
Some of the things you can observe under the microscope:
The Levenhuk MED 25B binocular microscope is compatible with Levenhuk digital cameras (sold separately). Levenhuk cameras should be fitted into the eyepiece tube in place of an eyepiece.
| Brand | Levenhuk Inc., USA |
| Warranty, years | Lifetime |
| Package dimensions (LxWxH), cm | 52x36x34 |
| Shipping weight, | 7.6 |
| Type | organic |
| Eyepiece | binocular |
| Optical material | optical glass with anti-fungal coating |
| Nozzle | rotates 360° |
| Head tilt angle | 30° |
| Magnification, x | 40–1000 |
| Eyepiece tube diameter, mm | 30.0 |
| Eyepieces | WF10x/18 mm, wide-field with dioptre adjustment (2 pcs.) |
| Objectives | planachromatic: 4x, 10x, 40x, 100x (oil immersion) |
| Objective turret | for 4 objectives |
| Interpupillary distance, mm | 55–75 |
| Stage, mm | 140 × 140 |
| Plate features | double mechanical layer, with mechanical scale |
| Eyepiece dioptre adjustment, dioptres | ±5 |
| Condenser | Abbe N.A. 1.25 with iris diaphragm and filter holder |
| Iris diaphragm | iris |
| Focus | coaxial, macrometric (0.5 mm) and micrometric (0.002 mm), with rack and pinion |
| Body | metal |
| Illumination | halogen |
| Brightness adjustment | True |
| Power supply | 100–240V |
| Light source type | 6V/20W, 85–230V AC |
| Optical filters | green, blue, yellow |
| Additional | collector, Köhler illumination, dark-field condenser (oil) |
| Application | laboratory/medical |
| Lighting position | bottom |
| Search method | bright field, dark field |



