Inverted Biological Microscope BS-2094A and BS-2094B
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Inverted biological microscope BS-2094A / BS-2094B is a high-performance laboratory microscope designed for observing live cells in culture dishes and flasks. With an advanced infinity optical system and ergonomic structure, the BS-2094 series offers superior imaging quality and easy handling, making it ideal for universities, hospitals, and research institutes.
Inverted Biological Microscope BS-2094A and BS-2094B Key Difference Between Models:
The main difference between the BS-2094A and BS-2094B models is that the BS-2094B features an intelligent illumination management system, which automatically adjusts the light intensity when switching objectives to ensure optimal lighting conditions. Additionally, BS-2094B is equipped with an LCD screen that displays essential operational information such as magnification level, light intensity, light source type (transmitted or fluorescent), and the current microscope status (active or sleep mode).
Inverted biological microscopes BS-2094A and BS-2094B Key Features:
1-Inverted biological microscopes BS-2094A and BS-2094B are Equipped with an infinity optical system, wide field eyepieces (Φ22mm), and 45° inclined head for user comfort during long sessions.
2-Camera port positioned on the left side minimizes operation disturbance; light distribution modes: 100:0 (eyepiece) / 0:100 (camera).
3-Long working distance condenser (N.A. 0.30) with 75mm WD (with condenser) and 187mm WD (without), suitable for high culture flasks.
4-Spacious mechanical stage (170×250mm) with a moving range of 128×80mm and adaptable petri dish holders
5-Inverted Biological Microscope BS-2094B: intelligent illumination and Display system:
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1. Coded Quintuple Nosepiece:
The BS-2094B is equipped with a smart quintuple nosepiece capable of remembering the brightness settings for each objective lens. When switching between objectives, the microscope automatically adjusts the illumination level, helping to reduce eye strain and enhance workflow efficiency.
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2. Multi-Function Dimming Knob:
The dimming knob on the BS-2094B offers multiple intuitive functions:
- single click: Activates standby (sleep) mode.
- Double click: Locks or unlocks the current light intensity setting.
- Rotate: Adjusts the brightness level.
- Press + rotate clockwise: Switches to the transmitted light source.
- Press + rotate counterclockwise: Switches to the fluorescent light source.
- Press and hold for 3 seconds: Sets the auto light-off timer when not in use.
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3. LCD Status Display:
An integrated LCD screen on the microscope’s front panel clearly shows real-time operational data, including the current magnification, illumination intensity, light source type, and working status (e.g., sleep mode).
Start& working Lock mode Turn off the light in 1 hour Sleep mode
6-Inverted biological microscope BS-2094 A and BS-2094B: Compact and UV-Resistant Body.
The microscope’s compact structure is UV-resistant and suitable for use inside clean benches. It withstands sterilization under UV light, making it ideal for contamination-sensitive environments.
Inverted Biological Microscope BS-2094
7-Inverted biological microscope BS-2094A and BS-2094B supports several advanced contrast observation methods using transmitted light, enabling high-quality visualization of various sample types:
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Phase Contrast Observation
This technique enhances image contrast by utilizing variations in refractive index, allowing clear visualization of transparent samples without the need for stains or fluorescent dyes. It is ideal for observing live cells, microorganisms, tissue sections, nuclei, and organelles.
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Hoffman Modulation Phase Contrast
By directing oblique light, this method transforms phase gradients into variations in light intensity. It is particularly useful for viewing unstained and live cells, delivering a 3D-like effect and significantly reducing halo artifacts in thicker samples.
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3D Emboss Contrast
This cost-effective technique achieves pseudo-3D, glare-free imaging without requiring expensive optical components. By simply adding a contrast adjustment slider, users can observe samples in both glass and plastic culture dishes with enhanced depth and detail.
With Hoffman Modulation Phase Contrast With 3D Emboss Contrast
8-Inverted biological microscope BS-2094 A and BS-2094B: Fluorescence Imaging System with LED:
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Enhanced Fluorescence Imaging with LED Illumination
The LED lighting system simplifies fluorescence observation by delivering a bright and uniform field of view through Fly-eye lens and Köhler illumination. This setup ensures high-definition images with exceptional detail. Unlike traditional mercury bulbs, LED lights offer a longer lifespan, reduce operational costs, and eliminate issues such as overheating, preheating, and cooling time.
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Compatibility with Multiple Fluorescent Dyes
The LED fluorescence attachment is equipped with three interchangeable fluorescent filter blocks, making it suitable for a wide variety of fluorescent dyes. This allows for the capture of sharp, high-contrast fluorescence images across multiple applications.
Breast cancer Hippocampus Mouse brain nerve cells
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Integrated Light Barrier Plate (Contrast Shield)
A dedicated light barrier plate can be mounted onto the condenser to effectively block external light sources, enhancing the contrast and quality of fluorescence imaging. When switching to phase contrast observation, the plate can be easily removed to avoid interference, ensuring optimal image clarity for both techniques.
Without Contrast barrier plate With Contrast barrier plate
Applications:
Inverted biological microscope BS-2094A / BS-2094B is ideal for:
- Live cell culture studies
- Medical and scientific research
- Pharmaceutical analysis
- Advanced imaging of transparent or unstained biological samples
Specification:
| Item | Specification | BS-2094A | BS-2094AF | BS-2094B | BS-2094BF | |
| Optical System | NIS 60 Infinite Optical System, Tube length 200mm | ● | ● | ● | ● | |
| Viewing Head | Seidentopf Binocular Head, Inclined at 45°, Interpupillary Distance 48-75mm, Left side camera port, Light distribution: 100: 0 (100% for eyepiece), 0:100 (100% for camera), Eyepiece Tube Diameter 30mm | ● | ● | ● | ● | |
| Eyepiece | SW10×/ 22mm | ● | ● | ● | ● | |
| WF15×/ 16mm | ○ | ○ | ○ | ○ | ||
| WF20×/ 12mm | ○ | ○ | ○ | ○ | ||
| Objective (Parfocal distance 60mm, M25×0.75) | NIS60 Infinite LWD Plan Achromatic Objective | 4×/0.1, WD=30mm | ● | ○ | ● | ○ |
| 10×/0.25, WD=10.2mm | ○ | ○ | ○ | ○ | ||
| 20×/0.40, WD=12mm | ○ | ○ | ○ | ○ | ||
| 40×/0.60, WD=2.2mm | ○ | ○ | ○ | ○ | ||
| NIS60 Infinite LWD Plan Phase Contrast Achromatic Objective | PH10×/0.25, WD=10.2mm | ● | ○ | ● | ○ | |
| PH20×/0.40, WD=12mm | ● | ○ | ● | ○ | ||
| PH40×/0.60, WD=2.2mm | ● | ○ | ● | ○ | ||
| NIS60 Infinite LWD Plan Semi-APO Fluorescent Objective | 4×/0.13, WD=17mm, cover glass=- | ○ | ● | ○ | ● | |
| 10×/0.3, WD=7.4mm, cover glass=1.2mm | ○ | ● | ○ | ● | ||
| 20×/0.45, WD=8mm, cover glass=1.2mm | ○ | ● | ○ | ● | ||
| 40×/0.60, WD=3.3mm, cover glass=1.2mm | ○ | ● | ○ | ● | ||
| 60×/0.70, WD=1.8-2.6mm, cover glass=0.1-1.3mm | ○ | ○ | ○ | ○ | ||
| NIS60 Infinite LWD Plan Semi-APO Phase Contrast Objective | 4×/0.13, WD=17.78mm, cover glass=- | ○ | ○ | ○ | ○ | |
| 10×/0.3, WD=7.4mm, cover glass=1.2mm | ○ | ○ | ○ | ○ | ||
| 20×/0.45, WD=7.5-8.8mm, cover glass=1.2mm | ○ | ○ | ○ | ○ | ||
| 40×/0.60, WD=3-3.4mm, cover glass=1.2mm | ○ | ○ | ○ | ○ | ||
| 60×/0.70, WD=1.8-2.6mm, cover glass=0.1-1.3mm | ○ | ○ | ○ | ○ | ||
| Nosepiece | Quintuple Nosepiece | ● | ● | |||
| Coded Quintuple Nosepiece | ● | ● | ||||
| Condenser | Long Working Distance Condenser, N.A. 0.3, Working Distance 75mm (with condenser), 187mm (without condenser) | ● | ● | ● | ● | |
| Telescope | Centering Telescope: used to adjust the center of phase annulus | ● | ● | ● | ● | |
| Phase Annulus | 10×-20×-40× Phase Annulus Plate (center adjustable) | ● | ● | ● | ● | |
| 4× Phase Annulus Plate | ○ | ○ | ○ | ○ | ||
| Stage | Stage 170 (X)×250(Y) mm with glass insert plate (diameter 110mm) | ● | ● | ● | ● | |
| Attachable Mechanical Stage, X-Y Coaxial Control, Moving Rang: 128mm×80mm, accept 5 types of petri-dish holders, well plates and stage clips | ● | ● | ● | ● | ||
| Auxiliary stage 70mm×180mm, used to extend the stage | ○ | ○ | ○ | ○ | ||
| Universal Holder: used for Terasaki plate, glass slide and Φ35-65mm petri dishes | ● | ● | ● | ● | ||
| Terasaki Holder: used for Φ35mm Petri Dish Holder and Φ65mm petri dishes | ○ | ○ | ○ | ○ | ||
| Glass Slide and Petri Dish Holder Φ54mm | ○ | ○ | ○ | ○ | ||
| Glass Slide and Petri Dish Holder Φ65mm | ○ | ○ | ○ | ○ | ||
| Petri Dish Holder Φ35mm | ○ | ○ | ○ | ○ | ||
| Petri Dish Holder Φ90mm | ○ | ○ | ○ | ○ | ||
| Focusing | Coaxial Coarse and Fine Adjustment, tension adjustment, Fine Division 0.001mm, Fine stroke 0.2mm per rotation, Coarse stroke 37.5mm per rotation. Moving Range: up 7mm, down 1.5mm; Without limitation can up to 18.5mm | ● | ● | ● | ● | |
| Transmitted Illumination | 3W S-LED, Brightness Adjustable | ● | ● | ● | ● | |
| EPI-Fluorescent Attachment | LED illuminator, built-in Fly-eye lens, can be configured with up to 3 different LED light source and B, G, U fluorescent filter blocks | ○ | ● | ○ | ● | |
| LED light source and V, R, FITC, DAPI, TRITC, Auramine, mCherry fluorescent filter block | ○ | ○ | ○ | ○ | ||
| Hoffman phase contrast | Hoffman Condenser with 10×, 20×, 40× insert plate, centering telescope and special objective 10×, 20×, 40× | ○ | ○ | ○ | ○ | |
| 3D Emboss Contrast | Main emboss contrast plate with 10×-20×-40× will be inserted into condenser | ○ | ○ | ○ | ○ | |
| Auxiliary emboss contrast plate will be inserted into slot which is near viewing head | ○ | ○ | ○ | ○ | ||
| C-mount Adapter | 0.5× C-mount Adapter (focus adjustable) | ○ | ○ | ○ | ○ | |
| 1× C-mount Adapter (focus adjustable) | ● | ● | ● | ● | ||
| Other Accessories | Warm stage | ○ | ○ | ○ | ○ | |
| Light barrier plate(contrast shield), can be attached to the condenser and block the external light | ○ | ○ | ○ | ○ | ||
| Dust cover | ● | ● | ● | ● | ||
| Power Supply | AC 100-240V, 50/60Hz | ● | ● | ● | ● | |
| Fuse | T250V500mA | ● | ● | ● | ● | |
| Packing | 2cartons/set, Packing Size: 47cm×37cm×39cm, 69cm×39cm×64cm Gross Weight: 20kgs, Net Weight: 18kgs | ● | ● | ● | ● | |
Note: ● Standard Outfit, ○ Optional
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