The BM-37XB trinocular inverted biological microscope has the characteristics of microscopic observation in culture bottles or petri dishes. The instrument is equipped with a long working distance objective lens, a long working distance plan achromatic condenser, a wide-angle eyepiece, and a phase contrast device. , can observe transparent living bodies without staining, and is especially suitable for microscopic research on living cells and tissues, fluids, sediments, etc., and can be used by scientific research, universities, medical, epidemic prevention, agriculture and animal husbandry and other departments.
This instrument uses an electric light source with continuously adjustable brightness. The hinged lens barrel is tilted at 45° and can rotate freely 360 degrees.
eyepiece:
| category | gain | focal length | Field of view diameter |
| wide angle eyepiece | 10X | 25mm | Ï18mm |
| Plan eyepiece | 16X | 15.6mm | Ï11mm |
Objective lens:
| Objective type | Magnification | numerical aperture | working distance | Petri dish wall thickness |
| Long working distance plan achromatic objectives | 4X | 0.1 | 25mm | ââ |
| 40X | 0.65 | 3.3mm | 1.5mm | |
| Long working distance plan phase contrast objectives | 10X | 0.25 | 8.1mm | ââ |
| 20X | 0.35 | 4.8mm | 1.5mm |