For sale is a very nice and classic Olympus microscope BH2 BHTU model with Phase Contrast and photography capability. There are four objectives: Dplan 4/0.1, PL 10/0.25, PL 40x/0.65, and PL 100x/1.25 oil. The PL ones are for Phase Contrast purpose, corresponding to the 10, 40 and 100 annuli respectively, in the Phase Contrast turret.
The Phase Contrast condenser Turret is I good shape. There is minor painting loss on the surface. Mechanically the knobs move smoothly as they are supposed to behave. Four annulus: 10,20,40,100 for the corresponding objectives magnification power.
There is also bright field opening with iris adjusted for appropriate numerical aperture. The trinocular head has two Olympus WK 10x / 20 L eyepieces with clear optics. There is one diopter adjustment and the interpupillary distance can be adjusted from 55-75 mm. The phototube is a dovetail mount to accept various types of camera adapters.
There are three light path selections :100% binocular, 100% photo, and 80% photo+ 20% binocular. The illumination is provided with a 6V 20 W halogen type bulb. The intensity can be adjusted with voltmeter on the front base as a reference.
The field diaphragm is available to control light intensity and coupled with the condenser position adjustment to achieve Koehler illumination, which is critical for high quality photography as well as bright field and Phase Contrast imaging. The item "Olympus BH2 Trinocular Microscope Phase Contrast 4x, PL10, PL40, PL100 Objectives" is in sale since Monday, April 22, 2019. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Microscopes". The seller is "smallworldmicroscope" and is located in Austin, Texas. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.