| Item | Specification | BK5000-B |
| Eyepiece | WF10X/20mm(23.2) | • |
| Infinity Plan objective | PLAN 4X/0.10 W.D=12.10mm | • |
| PLAN 10X/0.25 W.D.=4.64mm | • | |
| PLAN 20X/0.40(S) W.D.=2.41mm | • | |
| PLAN 40X/0.66(S) W.D.=0.65mm | • | |
| PLAN 100X/1.25(S,Oil) W.D=0.12mm | ° | |
| PLAN 2.5X/0.07 W.D.=8.47mm | ° | |
| PLAN 60X/0.80(S) W.D.=0.33mm | ° | |
| PLAN 100X/1.15(S,Water) W.D.=0.19mm | ° | |
| Seidentopf binocular head | Inclined 30°,rotatable 360°, Interpupilary distance:48mm-75mm | • |
| Nosepiece | Quintuple | • |
| Mechanical stage | Stage size:175mm x140mm, Travel range:78mm x55mm Coaxial coarse and fine focusing knobs Two slide holder | • |
| Condenser | Abbe N.A.1.25 with iris diaphragm | • |
Koehler illumination wide voltage:100V~240V Field diaphragm,center adjustable | 12V/20W halogen lamp | • |
| 6V/30W halogen lamp | ° | |
| 3W LED illumination | ° | |
| Filter | Blue | • |
| Green | ° | |
| Amber | ° | |
| Grey | ° | |
| Phase contrast unit | Quintuple hole turret 10X/20X/40X/100X phase contrast objective | ° |
Independ slot 10X/20X/40X/100X phase contrast objective | ° | |
| Dark field condenser | dry dark field condenser,apply to 4X-40X objective | • |
| wet dark field condenser,apply to 100X objective | ° | |
| Polarizing attachment | Polarizer/Analyzer | ° |
| Fluorescence attachment | Epi fluorescence unit(six hole disc media which can be fixed with Uv/V/B/G),100W mercury lamp | ° |
| Epi flurescence unit(six hole disc media which can be fixed with Uv/V/B/G),LED fluorescence lamp | ° |