The AmScope T700D compound trinocular microscope has a Siedentopf binocular mount with interchangeable pairs of 10x plan, 20x super-widefield, and 25x super-widefield eyepieces, a reverse-mounted quintuple nosepiece with five DIN plan objectives, Brightfield halogen illumination, and a double-layer mechanical stage with a stage stop to protect slides and objectives from damage. The trinocular head has a vertical camera mount and a Siedentopf binocular mount with interchangeable pairs of PL10x, WH20x, and WH25x eyepieces, 55 to 75mm Siedentopf interpupillary 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 vertical trinocular port accepts a camera with a 23mm or C-Mount adapter (camera sold separately). The mechanical tube length is 6-5/16" (160mm). The reverse-mounted revolving nosepiece has 4x, 10x, 20x, 40xS, and 100xS (oil) DIN infinity plan objectives that provide a longer working distance and improved focus over the entire range of the viewing field. The 40xS objective is spring loaded to prevent slide damage when focusing. The 100xS spring-loaded oil-immersion objective uses oil between the specimen and the objective lens to provide increased resolution over a standard objective. A compound microscope is used for inspection and dissection of specimens when two-dimensional images are desired.The microscope has Brightfield (BF) illumination which allows the specimen to absorb light, resulting in a dark image on a light background. Halogen light source 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 6.9 x 5.7 inches (175 x 145mm), has a 1-3/16" focusing range, and 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 trinocularMagnification40X-2500XTrinocular port23mm or C-MountEyepieces (30mm)PL10x, WH20x, WH25xObjectives (20mm)4X, 10x, 20x, 40xS, 100xS (oil) planStageDouble-layer mechanicalLighting configurationTransmitted (lower)CondenserKohlerDiaphragmIrisLight sourceHalogen with rheostat, 6V/20WIllumination typeBrightfieldPower90V-240V, auto-switchingMicroscopes 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 T700D microscope with double-layer mechanical stagePL10x eyepieces, 30mm, one pairWH20x eyepieces, 30mm, one pairWH25x eyepieces, 30mm, one pair4x DIN plan objective, 20mm10x DIN plan objective, 20mm20x DIN plan objective, 20mm40xS DIN plan objective, 20mm100xS (oil) DIN plan objective, 20mmImmersion oil, one bottle(3) Color filtersSpare halogen bulbSpare fuseFocus-tension wrenchDavid screw driver, L-shapedDust coverPower cordInstructions
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Good value for the price!
The AmScope T700D Professional Trinocular Compound Microscope was ordered through Amazon.com on 7/10/2019 and arrived 7/16/2019 (1 day early per shipping info). It came suppied with 5 infinity Plan objectives, three sets of eyepieces (PL10X, WH20X, & WH25X Super-Widefield), and two filters (one daylight and one apple-green) that fit on the exit aperture for the field diaphragm. Assembly, set up, & establishing Kohler illumination for all objectives went smoothly (not perfect -- unable to get halogen light source bulb filament perfectly centered for ideal illumination -- but close enough). Found that objectives were not perfectly par-centric (slight shift of image when changing objectives) and that they were not perfectly parfocal (one needs to adjust focus more than expected when changing objectives -- found that the focal length of the objectives increases slightly as the objective magnification increases, i.e. if there were a way to shorten the thread distance on the longer objectives or lengthen the thread distance on the lower power objectives parfocallity could be improved). Also noticed a bit of glass chip debris in the trinocular head prism system (unable to figure out how to access and clean out so far), but it doesn't seem to affect image quality.The photography adapter provided with the trinocular head of the AmScope T700D compound microscope accepts a 28mm microscope adapter for a camera (DSLR or other; photo #1). By adjusting the sliding tube of the photography adapter on the T700D trinocular microscope (photo #2), one can get the camera focus to be parfocal w/ the eyepieces. One can rotate the camera + adapter as a unit on top of the microscope to orient the view desired for the photo.Also purchased the AmScope CA-CAN-SLR-III NEW Canon SLR / D-SLR Camera Adapter for Microscopes - Microscope Adapter and an AmScope SM-2BR 7X-45X Super Widefield Track Stand Stereo Binocular Microscope with Dual Lighting (a stereo dissecting microscope) about the same time. The microscope adapter came with a Canon DSLR camera bayonet fitting to mate with a Canon DSLR camera; I found (as I suspected) that the camera adapter was a T-Mount adapter for Canon DSLR cameras with a standard female 42 mm screw thread (41.88 mm OD x 0.75 pitch) on the bottom. As I use an Olympus EVolt E-500 DSLR camera, I was able to purchase a Rokinon T-Mount Adaptor Olympus Four Thirds T2-OP to substitute for the Canon adapter on the top of the microscope adapter; that worked well to enable use for photos through both microscopes (photos #3-7).One thing to note: the eyepieces on both the T700D and the SM-2BR scopes are 30mm in diam and I could find no way to insert an ocular micrometer reticle. I wound up purchasing an AmScope EP10X30R Super Widefield 10X Microscope Eyepiece with Reticle (30mm) for the T700D compound scope and swapping the PL10x objectives for the compound scope to the SM-2BR dissecting scope for the EP10x30R Super Widefield eyepieces supplied with the dissecting scope. That provided a satisfactory solution to allow me to measure specimens viewed with the T700D (& the SM-2BR, if I swap the supplemental eyepiece purchased back to the dissecting scope temporarily).All in all, the T700D provided a workable option for my compound microscope needs at around 20% (or less) of the cost for higher end top quality microscopes (e.g., Zeiss, Nikon, Olympus, Leitz, etc). And the SM-2BR dissecting scope (at $173.00) was a real buy!A more complete review of the CA-CAN-SLR-III microscope microscope adapter is provided in a separate review.Photo info:#1. T700D microscope w/ CA-CAN-SLR-III microscope adapter & Olympus E500 camera mounted on scope.#2. T700D microscope w/ CA-CAN-SLR-III microscope adapter & Olympus E500 camera mounted on the photography adapter supplied with the T-700D microscope. Note the screw knob on the photography adapter;#3. Snapdragon rust spores viewed w/ 10x objective (bar = 200 um or 0.2 mm).#4. Snapdragon rust spores viewed w/ 20X objective (bar = 100 um or 0.1 mm).#5. Boletus edulis mushroom spores viewed w/ 40x objective (bar = 50 um or 0.05 mm)#6. Lactarius deliciosus mushroom spores stained w/ iodine to show the amyloid warts & reticulum, viewed w/ 40x objective (bar = 50 um or 0.05 mm).#7. Snapdragon rust pustules viewed through AmScope SM-BR2 binocular dissecting microscope at 2x mag setting (yellow bar = 0.4 mm or 400 um).
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Vital for Doomsday preppers!
When the world government finally collapses, good doomsday preppers will want to have one of these to help them try to cure the inevitable zombie-producing diseases that will continually threaten what's left of humanity. I've never seen a zombie movie where one of these was not used or desperately needed. The 2500X magnification will allow you to easily identify bacteria that cause zombie-ism. Also allows analysis of werewolf blood.
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