1. Introduzione e oltreview
The AmScope B120 Siedentopf Binocular Compound Microscope is designed for high-magnification biological and educational applications. It features a Siedentopf binocular head for comfortable viewing, a forward-facing nosepiece with four DIN achromatic objectives, Brightfield LED illumination, and a double-layer mechanical stage for precise specimen manipulation.
This microscope provides clear, color-corrected magnified images, making it suitable for detailed inspection and dissection of specimens where two-dimensional images are desired.

Figure 1: The AmScope B120 Siedentopf Binocular Compound Microscope, showcasing its main components including the binocular head, objective lenses, and mechanical stage.
2. Cosa c'è nella scatola
Dopo aver disimballato, verificare che siano presenti tutti i seguenti componenti:
- AmScope B120 microscope with double-layer mechanical stage
- (4) DIN Standard Objectives: 4x, 10x, 40xS (spring-loaded), and 100xS (spring-loaded, oil immersion)
- 10x widefield eyepieces, one pair
- Color filter, blue
- Immersion oil, one bottle
- Copertura antipolvere
- Istruzioni (questo manuale)
3. Guida all'installazione
- Disimballaggio: Carefully remove all components from the packaging. Place the microscope body on a stable, level surface.
- Attaching the Head: Loosen the head locking screw on the microscope body. Gently insert the Siedentopf binocular head into the top opening of the microscope body. Tighten the locking screw to secure the head.
- Inserimento degli oculari: Insert the two 10x widefield eyepieces into the eyepiece tubes on the binocular head.
- Collegamento dell'alimentazione: Connect the power cord to the microscope's power input and then to a standard 110V or 220V AC outlet. Ensure the power switch is in the "Off" position before connecting.
- Regolazioni iniziali:
- Inter-pupillary Distance: While looking through the eyepieces, adjust the distance between the two eyepiece tubes until you see a single, clear circular field of view. The inter-pupillary adjustment range is 53 to 77mm.
- Regolazione diottrica: If one eye is stronger than the other, use the diopter adjustment ring on one of the eyepiece tubes (usually the left one) to compensate. Focus on a specimen with your non-diopter eye first, then adjust the diopter ring for the other eye until both eyes see a sharp image.

Figura 2: lato view of the AmScope B120, showing the main body and the position for attaching the binocular head.
4. Istruzioni per l'uso
4.1 Accensione e spegnimento
Locate the power switch, usually on the side or back of the microscope base. Flip the switch to the "On" position to activate the LED illumination. Flip it to "Off" when not in use.
4.2 Posizionamento di un campione
- Rotate the nosepiece to select the lowest power objective (4x).
- Abbassare la meccanica stage using the coarse focus knob to create enough space.
- Posizionare il vetrino preparato sul supporto meccanicotage, fissandolo con la stage clip.
- Use the X-Y axis stage manipulation knobs to center the specimen directly under the objective lens.

Figure 3: A user observing a specimen through the AmScope B120 microscope, demonstrating proper posture and handling.
4.3 Messa a fuoco
- Messa a fuoco grossolana: While looking through the eyepieces, slowly raise the stage using the coarse focus knob until the specimen comes into approximate focus.
- Messa a fuoco fine: Once the image is roughly focused, use the fine focus knob for precise adjustments to achieve a sharp, clear image.
- Modifica degli obiettivi: To increase magnification, rotate the nosepiece to the next objective (e.g., from 4x to 10x). The microscope is parfocal, meaning the image should remain largely in focus, requiring only minor adjustments with the fine focus knob.
- Note: The 40xS and 100xS objectives are spring-loaded to prevent damage to the slide or objective if they accidentally contact.
4.4 Regolazione dell'illuminazione
- Controllo della luminosità del LED: Use the dimmer knob (if present) on the microscope base to adjust the intensity of the LED light source.
- Condensatore Abbe: The 1.25 NA Abbe condenser is located beneath the stage. Use the condenser adjustment knob to raise or lower the condenser, controlling the light path and optimizing illumination for different objectives.
- Diaframma a iride: The iris diaphragm is located within the Abbe condenser. Adjust its lever to control the amount of light illuminating the specimen and to improve contrast. Generally, for higher magnification, you may need to open the diaphragm more.

Figura 4: in alto view of the objective lenses and mechanical stage, illustrating the components involved in specimen placement and magnification.
4.5 Using the 100xS Oil Immersion Objective
The 100xS objective requires immersion oil for optimal resolution. Follow these steps:
- Focus on your specimen using the 40xS objective.
- Rotate the nosepiece halfway between the 40xS and 100xS objectives.
- Place a small drop of immersion oil directly onto the center of the illuminated area of the slide.
- Carefully rotate the 100xS objective into place, ensuring it makes contact with the oil drop. The spring-loaded mechanism will prevent excessive pressure.
- Use only the fine focus knob to bring the image into sharp focus.
- After use, always clean the 100xS objective and the slide thoroughly with lens paper and a suitable lens cleaning solution to remove all oil residue.
5. Manutenzione
- Pulizia delle lenti: Use only specialized lens paper and lens cleaning solution for optical components. Gently wipe the lenses in a circular motion. Avoid touching lenses with bare fingers.
- Pulizia del corpo: Pulisci il corpo del microscopio con un panno morbido eamp stoffa. Evitare l'uso di prodotti chimici aggressivi o detergenti abrasivi.
- Magazzinaggio: When not in use, cover the microscope with the provided dust cover to protect it from dust and debris. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Oil Immersion Care: Always clean the 100xS objective immediately after use to prevent oil from drying on the lens.
- Moving the Microscope: Always carry the microscope by holding the arm with one hand and supporting the base with the other.
6. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Nessuna illuminazione | Power cord not connected; Power switch off; LED bulb failure. | Check power connection; Turn power switch on; Contact support for bulb replacement. |
| Immagine sfocata o fuori fuoco | Incorrect focus knob used; Slide upside down; Objective lens dirty; Condenser/diaphragm not adjusted. | Use fine focus for precise adjustment; Ensure slide cover slip is up; Clean objective lens; Adjust condenser and iris diaphragm. |
| Campo oscuro di view | Iris diaphragm closed too much; Condenser too low; Light intensity too low. | Open iris diaphragm; Raise condenser; Increase LED brightness. |
| Polvere o macchie nel campo di view | Polvere sull'oculare, sull'obiettivo o sul vetrino. | Clean eyepieces and objectives with lens paper; Clean slide. |
7. Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Testa | Siedentopf Binocular, 30-degree inclined, 360-degree rotatable |
| Oculari | WF 10x (Widefield) |
| Obiettivi | 4X, 10x, 40xS (spring), 100xS (spring, oil) DIN Achromatic |
| Gamma di ingrandimento | 40X - 1000X |
| Stage | Doppio strato meccanico Stage con divisioni da 1.0 mm |
| Illuminazione | Transmitted (bottom) Brightfield LED |
| Condensatore | 1.25 NA Abbe with Iris Diaphragm |
| Energia | 110V / 220V (Doppio Voltage) |
| Dimensioni (L x P x A) | 11 x 7 x 13.75 pollici (27.94 x 17.78 x 34.92 cm) |
| Peso dell'articolo | 9.25 libbre (4.2 kg) |
| Materiale | Enamel-coated cast-steel body, Glass optics |
8. Garanzia e supporto
For warranty information and technical support, please contact the manufacturer, United Scope LLC., directly. Details regarding product warranty periods and service procedures are typically provided with your purchase documentation or can be found on the official AmScope websito.
Puoi visitare il AmScope Store on Amazon for more information or to find contact details for support.