AmScope PZ200TA Polarizing Trinocular Microscope, WF10x and WF16x Eyepieces, 40X-640X Magnification, Strain-Free Plan Achromatic Objectives, Polarizing and Brightfield Configurations, Halogen Illumination, Bertrand Lens, Abbe Condenser, Round Graduated Stage, 110V

The AmScope PZ200TA compound trinocular polarizing microscope has interchangeable pairs of 10x widefield and 16x widefield eyepieces, a focusable Bertrand lens on a rotatable disc, a forward-facing nosepiece with three DIN strain-free plan achromatic objectives, polarizing and Brightfield halogen illumination, and a round graduated stage with a stage stop to protect slides and objectives from damage. The trinocular head has a Siedentopf binocular mount with interchangeable pairs of WF10x and WF16x eyepieces and 55 to 75mm interpupillary adjustment, a fixed 45-degree vertical inclination to reduce eye and neck strain, and a 360-degree rotation capability to enable sharing. A Siedentopf binocular head enables the viewer to change the interpupillary distance without changing the tube length, eliminating the need to re-focus the image. Dioptric adjustment accommodates individual eye-strength differences. The vertical trinocular port can be used as a C-Mount or 23mm photo port (camera sold separately). The forward-facing, ball-bearing driven triple nosepiece has 4x, 10x, and 40xS (spring) DIN strain-free plan achromatic objectives. Strain-free objectives are optimized for use with polarized light, and plan achromatic objectives provide color correction and focus over the entire viewing field. The 40xS objective is spring loaded to prevent slide damage when focusing. Polarizing microscopes are used in geology, petrology, mineralogy, toxicology, pharmacology, forensics, and industrial inspection applications to view and measure birefringence of anisotropic materials, including organic compounds, water, minerals, and rocks.The microscope has polarizing and Brightfield illumination with a selection knob to choose between illumination types. The built-in Bertrand lens has a rotating disc with centering controls, and 90-degree rotation with 1-degree graduations. The polarizer, analyzer, and Bertrand lens can be removed from the optical path to use the microscope as a Brightfield microscope. Transmitted 20W halogen illumination has a rheostat to control light intensity, and provides bright light in a concentrated path. The 1.25 NA Abbe condenser is mounted on a steel rack-and-pinion control system and can be adjusted to control the distance of the light from the stage. An iris diaphragm optimizes the amount of light illuminating the specimen. The round 160mm diameter floating stage has 360-degree rotation on a ball-bearing movement, and a 28mm vertical travel range. The stage is graduated in 1-degree increments and is equipped with a vernier scale for greater precision, which allows retardation measurements to be made with a minimum resolution of 6 minutes of arc. It has a locking screw to secure the stage location, detachable slide clips, and a stain-resistant finish. Nested coaxial coarse and fine focus has tension-adjustable coarse focusing and an adjustable lock ring stopper that limits stage range to protect slides and objectives from damage. All-metal mechanical parts, solid-metal frame construction, and a stain-resistant enamel finish provide durability.SpecificationsHeadTrinocularMagnification range40x-640xEyepieces (23mm)WF10x, WF16xObjectives (20mm)Strain-free 4X, 10x, 40xS DIN plan achromatic polarizingStageRound mechanical, with 1-degree increments and 6' (minutes of arc) vernier graduationsCondenser1.25 NA Abbe, with swing-out lensMidist head160mm diameter, built-in removable analyzer, 90-degree rotation with 6' (minutes of arc) vernierLight sourceHalogen with rheostat, 6V/20WIllumination typePolarizing/BrightfieldPower110VMicroscopes 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 PZ200TA microscopeWF10x eyepieces, 23mm, one pairWF16x eyepieces, 23mm, one pair4x DIN strain-free plan achromatic objective, 20mm10x DIN achromatic strain-free plan objective, 20mm40xS DIN strain-free plan achromatic objective, 20mmPolarizer(2) Color filters; blue and green(2) Spare halogen bulbs(2) Spare fusesPower cordDust coverInstructions

• Polarizing compound microscope has a built-in focusable Bertrand lens on rotatable disc for use in geology, petrology, mineralogy, toxicology, pharmacology, forensics, and silicon wafer and industrial inspection applications
• Siedentopf trinocular mount with pairs of 10x widefield and 16x widefield eyepieces, 55 to 75mm interpupillary adjustment, fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing
• Forward-facing triple nosepiece with 4x, 10x, and 40xS strain-free plan achromatic with precision-ground elements optimized for use with polarized light
• Polarizing illumination with focusable Bertrand lens on rotating disc, and Brightfield illumination with rheostat-controlled 20W halogen illumination
• Round stage with 360-degree rotation, nested coaxial coarse and fine focusing system; tension-adjustable coarse focusing and lock ring stopper to limit coarse range and protect slides