AmScope B690A-PCT200INF-PL Siedentopf Binocular Compound Microscope, 40X-1500X Brightfield Magnification, 100X-1500X Turret-Mounted Phase-Contrast Illumination, WH10x and WH15x Super-Widefield Eyepieces, Infinity Plan Objectives, Kohler Condenser, Do

Description

• Compound microscope provides high magnification for biological use and educational applications
• Siedentopf binocular head with pairs of 10x super-widefield and 15x super-widefield eyepieces with 55 to 75mm inter-pupillary adjustment, fixed 30-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to provide a more comprehensive view and enable sharing
• Reverse-mounted nosepiece with 4x, 10x, 40xS (spring), and 100xS (spring, oil) DIN achromatic infinity plan objectives that provide focus over the entire range of the viewing field, and a longer working distance for improved focus when auxiliary components are utilized, and 10x, 20x, 40xS, and 100xS (oil) infinity plan turret-mounted phase-contrast objectives
• Brightfield, halogen illumination with rheostat to control light intensity, and Kohler condenser with two iris diaphragms, for precise focus, clear examination, and light control
• Double-layer mechanical stage with 1.0mm stage divisions and stage stop, and graduated coarse and fine focus with tension control to prevent stage drift

The AmScope B690A-PCT200INF-PL compound Siedentopf binocular microscope has interchangeable pairs of 10x super-widefield and 15x super-widefield eyepieces, a forward-facing nosepiece with four DIN infinity plan objectives, Brightfield halogen illumination, and a double-layer mechanical stage with a stage stop to protect slides and objectives from damage. The Siedentopf binocular head has interchangeable pairs of WH10x and WH15x eyepieces with 55 to 75mm Siedentopf inter-pupillary adjustment, a fixed 30-degree vertical inclination to reduce eye and neck strain, and a 360-degree rotation capability to provide a more comprehensive view and enable sharing. Dioptric adjustment accommodates individual eye-strength differences. The mechanical tube length is 6-5/16" (160mm). The reverse-mounted revolving nosepiece has 4x, 10x, 40xS, and 100xS (oil) DIN Brightfield infinity plan objectives that provide focus over the entire range of the viewing field, and a longer working distance for improved focus when auxiliary components are utilized. The 40xS objective is spring loaded to prevent slide damage when focusing. The 100xS spring-loaded oil objective provides increased resolution over a standard objective. The phase-contrast turret has 10x, 20x, 40xS, and 100xS (oil) infinity plan phase-contrast objectives that provide focus over the entire range of the viewing field, and a longer working distance for phase-contrast applications. A compound microscope is used for inspection and dissection of specimens when two-dimensional images are desired.
The microscope has Brightfield and phase-contrast illumination. Brightfield (BF) illumination allows the specimen to absorb light, resulting in a dark image on a light background. Phase-contrast provides high contrast and visibility without the use of stains, allowing specimens to be observed in their natural state without being killed or fixed. The objectives are mounted on a turret to ease magnification changes. Halogen illumination provides bright light in a concentrated path, and a Kohler condenser focuses and centers the light path using two iris diaphragms, providing optimum contrast and resolution. The graduated double-layer mechanical stage, with 1mm stage divisions, locks the slide into place and provides precise slide manipulation along the X- and Y-axis to allow coordinates to be recorded, enabling the viewer to return to a specific location on the slide. A stage stop prevents the stage or specimen from coming into contact with the objectives. The stage is 7.1 x 5.9 inches (180 x 150mm) and has a traveling range of 2-3/4 x 2 inches (70 x 50mm). Graduated coaxial coarse and fine focus has a focusing range of 1-3/16" (30mm) and fine-focus divisions of 0.002mm (0.0000787") that enable measurements to be taken. Focus knob tension control prevents the stage from drifting out of focus. The cast-alloy enamel-coated body is durable and resistant to stains and corrosion. SpecificationsHeadCompound binocularEyepiecesWH10x, WH15xObjectives4X, 10x, 40xS, 100xS (oil) infinity plan; 10x, 20x, 40xS, 100xS (oil) infinity plan phase contrastStageDouble-layer MechanicalLighting configurationTransmitted (lower)CondenserKohlerDiaphragmIrisLight sourceHalogen with rheostat, 6V/20WIllumination typeBrightfield, phase-contrastPower85V-230V, auto-switching

Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries.
United Scope manufactures microscopy equipment and accessories under the brand name AmScope. The company, founded in 1996, is headquartered in Irvine, CA. What's in the Box? AmScope B690A- PCT200INF-PL microscope with double-layer mechanical stage WH10x eyepieces, one pair WH15x eyepieces, one pair 4x DIN infinity plan objective 10x DIN infinity plan objective 40xS DIN infinity plan objective 100xS (oil) DIN infinity plan objective Phase-contrast turret 10x infinity plan phase-contrast objective 20x infinity plan phase-co

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