BX53
The BX53 semi-motorized microscope offers flexible configurations for a wide range of observation methods, including phase contrast and fluorescence. High-performance X Line™ objectives with bright LED lighting delivers sharp, high-resolution images with better color accuracy for pathology and laboratory applications.
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Observation Method | Brightfield | ✓ | |
Darkfield | ✓ | ||
Phase Contrast | ✓ | ||
Fluorescence (Blue/Green Excitations) | ✓ | ||
Fluorescence (Ultraviolet Excitations) | ✓ | ||
Differential Interference Contrast | ✓ | ||
Polarized Light | ✓ | ||
Simple Polarized Light | ✓ | ||
Illuminator | Transmitted Köhler Illuminator | LED Lamp | ✓ |
Fluorescence Illuminator | Direct Coupled 100 W Mercury Lamp or LED | ✓ | |
Light Guide Illumination | ✓ | ||
Focus | Focusing Mechanism | Stage Focus | ✓ |
Intermediate Magnification Changer | Manual Terret | ✓ | |
Revolving Nosepiece | Motorized (7 positions) | ✓ | |
Manual | Coded (7 positions) | ✓ | |
Standard (7 positions) | ✓ | ||
Stage | Manual | Manual Stages with Right-Hand Control | X: 76 mm (3 in.), Y: 52 mm (2 in.) |
Mechanical | Oil Rectangular Stage with Right-Hand Control | X: 76 mm (3 in.), Y: 52 mm (2 in.) | |
Plain Stage | Dimensions: 180 mm × 150 mm (7 in. × 6 in.) | ||
Rotatable Graduated Stage | Rotation: 360 degrees | ||
Condenser | Motorized | Universal Condenser (Phase/Darkfield/DIC) | NA 0.9/ W.D. 1.5 mm for 1.25X–100X [swing-out: 1.25X–4X, with oil top lens: (NA 1.4/ W.D. 0.63 mm)] |
Manual | Universal Condenser (Phase/Darkfield/DIC) | NA 0.9/ W.D. 1.5 mm for 1.25X–100X [swing-out: 1.25X–4X, with oil top lens: (NA 1.4/ W.D. 0.63 mm)] | |
Swing-Out Condenser | NA 0.9/ W.D. 2 mm (1.25X–100X) | ||
Achromatic/Aplanatic Condenser | NA 1.4/ W.D. 0.7 mm (oil) (10X–100X) | ||
Darkfield Condenser Dry | NA 0.8–0.92/ W.D. 4.52 mm (10X–40X) | ||
Darkfield Condenser Oil | NA 1.2–1.4/ W.D. 0.5 mm (20X–100X) | ||
Low Magnification Condenser | NA 0.75/ W.D. 1.55 mm (2X–100X) | ||
Abbe Condenser | NA 1.1/ W.D. 0.7 mm (oil) (4X–100X) | ||
Phase Contrast Condenser | NA 1.1/ W.D. 0.7 mm (4X–100X) | ||
Polarizing Condenser | NA 0.9/ W.D. 1.3 mm (slide glass 1.5 mm) (4X–100X) | ||
Observation Tubes | Widefield (FN22) | Binocular | ✓ |
Tilting Binocular | ✓ | ||
Trinocular | ✓ | ||
Tilting Trinocular (FN26.5 available when no intermediate tube is used) | ✓ | ||
Ergonomic Tilting Binocular | ✓ | ||
Tilting, Telescopic, Lifting Binocular | ✓ | ||
Trinocular for Infrared | ✓ | ||
Erected Trinocular | ✓ | ||
Erected Ergonomic Tilting Binocular | ✓ | ||
Super Widefield (FN26.5) | Trinocular | ✓ | |
Erect Image Tilting Trinocular | ✓ | ||
Dimensions (W × D × H) | 274.5 mm × 614 mm × 469 mm (10.8 in. × 24.2 in. × 18.5 in.) (Epifluorescence configuration) | ||
Weight | 21 kg (46.3 lb) (Epifluorescence configuration) | ||
Operating Environment | Indoor Use | Ambient Temperature | 5 °C–40 °C (41 °F–104 °F) |
Maximum Relative Humidity | 80% for temperatures up to 31 ºC (88 ºF), decreasing linearly through 70% at 34 ºC (93 ºF), 60% at 37 ºC (99 ºF), to 50% relative humidity at 40 ºC (104 ºF) | ||
Supply Voltage Fluctuations | ±10 % | ||













Observation Method | Brightfield | ✓ | |
Darkfield | ✓ | ||
Phase Contrast | ✓ | ||
Fluorescence (Blue/Green Excitations) | ✓ | ||
Fluorescence (Ultraviolet Excitations) | ✓ | ||
Differential Interference Contrast | ✓ | ||
Polarized Light | ✓ | ||
Simple Polarized Light | ✓ | ||
Illuminator | Transmitted Köhler Illuminator | LED Lamp | ✓ |
Fluorescence Illuminator | Direct Coupled 100 W Mercury Lamp or LED | ✓ | |
Light Guide Illumination | ✓ | ||
Focus | Focusing Mechanism | Stage Focus | ✓ |
Intermediate Magnification Changer | Manual Terret | ✓ | |
Revolving Nosepiece | Motorized (7 positions) | ✓ | |
Manual | Coded (7 positions) | ✓ | |
Standard (7 positions) | ✓ | ||
Stage | Manual | Manual Stages with Right-Hand Control | X: 76 mm (3 in.), Y: 52 mm (2 in.) |
Mechanical | Oil Rectangular Stage with Right-Hand Control | X: 76 mm (3 in.), Y: 52 mm (2 in.) | |
Plain Stage | Dimensions: 180 mm × 150 mm (7 in. × 6 in.) | ||
Rotatable Graduated Stage | Rotation: 360 degrees | ||
Condenser | Motorized | Universal Condenser (Phase/Darkfield/DIC) | NA 0.9/ W.D. 1.5 mm for 1.25X–100X [swing-out: 1.25X–4X, with oil top lens: (NA 1.4/ W.D. 0.63 mm)] |
Manual | Universal Condenser (Phase/Darkfield/DIC) | NA 0.9/ W.D. 1.5 mm for 1.25X–100X [swing-out: 1.25X–4X, with oil top lens: (NA 1.4/ W.D. 0.63 mm)] | |
Swing-Out Condenser | NA 0.9/ W.D. 2 mm (1.25X–100X) | ||
Achromatic/Aplanatic Condenser | NA 1.4/ W.D. 0.7 mm (oil) (10X–100X) | ||
Darkfield Condenser Dry | NA 0.8–0.92/ W.D. 4.52 mm (10X–40X) | ||
Darkfield Condenser Oil | NA 1.2–1.4/ W.D. 0.5 mm (20X–100X) | ||
Low Magnification Condenser | NA 0.75/ W.D. 1.55 mm (2X–100X) | ||
Abbe Condenser | NA 1.1/ W.D. 0.7 mm (oil) (4X–100X) | ||
Phase Contrast Condenser | NA 1.1/ W.D. 0.7 mm (4X–100X) | ||
Polarizing Condenser | NA 0.9/ W.D. 1.3 mm (slide glass 1.5 mm) (4X–100X) | ||
Observation Tubes | Widefield (FN22) | Binocular | ✓ |
Tilting Binocular | ✓ | ||
Trinocular | ✓ | ||
Tilting Trinocular (FN26.5 available when no intermediate tube is used) | ✓ | ||
Ergonomic Tilting Binocular | ✓ | ||
Tilting, Telescopic, Lifting Binocular | ✓ | ||
Trinocular for Infrared | ✓ | ||
Erected Trinocular | ✓ | ||
Erected Ergonomic Tilting Binocular | ✓ | ||
Super Widefield (FN26.5) | Trinocular | ✓ | |
Erect Image Tilting Trinocular | ✓ | ||
Dimensions (W × D × H) | 274.5 mm × 614 mm × 469 mm (10.8 in. × 24.2 in. × 18.5 in.) (Epifluorescence configuration) | ||
Weight | 21 kg (46.3 lb) (Epifluorescence configuration) | ||
Operating Environment | Indoor Use | Ambient Temperature | 5 °C–40 °C (41 °F–104 °F) |
Maximum Relative Humidity | 80% for temperatures up to 31 ºC (88 ºF), decreasing linearly through 70% at 34 ºC (93 ºF), 60% at 37 ºC (99 ºF), to 50% relative humidity at 40 ºC (104 ºF) | ||
Supply Voltage Fluctuations | ±10 % | ||


