The AmScope PZ300T compound trinocular polarizing microscope has one pair of 10x22mm extreme widefield high eye-point infinity plan eyepieces (one with reticle), a focusable Bertrand lens on a rotatable disc, a reverse-mounted quadruple nosepiece with four DIN strain-free plan achromatic objectives, polarizing and Brightfield 30W halogen illumination, and a round graduated stage with a stage stop to protect slides and objectives from damage. The microscope has a color-corrected infinity optical system (CCIS) that provides color correction and improved focus of the intermediate image across the entire focal plane. The trinocular head has a Siedentopf binocular mount with two interchangeable pairs of super-widefield PL10x22mm infinity plan high eye-point eyepieces (with and without reticle), 50-80mm interpupillary adjustment, a fixed 30-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. High eye-point objectives ease viewing for users who wear glasses, and dioptric adjustment accommodates individual eye-strength differences. A reticle enables users to specify the location of areas of interest. The vertical trinocular port can be used as a C-Mount or 23mm photo port (camera sold separately). The reverse-mounted, ball-bearing driven quadruple nosepiece has 4x, 10x, 40xS (spring), and 60xS DIN strain-free infinity plan achromatic 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. Strain-free objectives are optimized for use with polarized light. The 40xS and 60xS objectives are spring loaded to prevent slide damage when focusing. A reverse-mounted nosepiece keeps objectives out of the way to prevent damage and contamination, and to enable more secure slide handling. 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 30W halogen illumination has a rheostat to control light intensity, and provides bright light in a concentrated path. The Kohler condenser focuses and centers the light path using two iris diaphragms, providing optimum contrast and resolution. 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.

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 PZ300T microscope
• PL10x22mm high eye-point plan eyepiece, 30mm
• PL10x22mm high eye-point plan eyepiece, with reticle, 30mm
• 4x DIN strain-free infinity plan achromatic objective, 20mm
• 10x DIN strain-free infinity plan achromatic objective, 20mm
• 40xS DIN strain-free infinity plan achromatic objective, 20mm
• 60xS DIN strain-free infinity plan achromatic objective, 20mm
• Polarizer
• Color filter, blue
• (Spare halogen bulb
• Spare fuse
• Power cord
• Dust cover
• Instructions