Premium Optics for High Quality Imaging: Included with the quadruple nosepiece are four multi-coated DIN 195mm objective lenses. Unlike lower grade objectives that tend to show false colors, these achromatic lenses are specially designed to correct color aberrations and display a true-color image. You get 4x, 10x, spring loaded 40x, and spring loaded oil immersion 100x objectives included with this microscope. For viewing, we provide two sets of premium grade wide-field eyepieces, a pair of 10x (18mm) eyepieces and a pair of 20x (10mm) eyepieces. This allows for magnification ranges of 40x, 80x, 100x, 200x, 400x, 800x, 1000x, and 2000x. We offer optional eyepieces as well. We have optional wide field eyepieces available in 15x, and 16x powers, giving you an enormous range of possible magnifications.
Darkfield Condenser: This package includes a darkfield condenser to increase contrast when viewing your specimens. These are ideal for looking at liquid samples and specimens suspended in liquids. As well, it is ideal for use when viewing plant and animal cells. The darkfield condenser is easily added to your microscope by removing the included Abbe condenser and inserting the darkfield condenser into the vacant slot. This darkfield condenser is designed for our Variscope brand microscopes, so it's a perfect fit. This is a dry darkfield condenser designed for use with the 3 dry objectives on the Variscope Series 200 microscope.
Ultra-Comfort Ergonomic Microscope Design: This biological microscope has ergonomic features to make your microscope viewing as comfortable as possible. To begin, this microscope has an advanced Seidentopf-type microscope head. This gives you the absolute maximum flexibility and comfort in adjusting interpupillary distance. There is an interpupillary gauge so that different users can keep track of their own optimal space setting, this is a nice feature that is not available on all brands of microscopes. Cheaper models have a simple one-axis rack-and-pinion sliding adjustment head that is not nearly as easy to adjust. The main microscope head swivels 360 degrees for viewing from any angle, and the head itself sits at a comfortable 30 degree incline. The eyepieces have diopter focusing adjustments.
Advanced Focuser: This microscope has a state-of-the-art tension adjustable focuser that integrates coarse and fine focusing in a single knob. With the tension adjust, you can set the amount of pressure you have to apply to the fine focuser to make adjustments. This is extremely useful in dealing with wet-mount slides where the fine focus range is fairly large compared with prepared slides. The focusing controls are on both the right and left side of the scope allowing for easy adjustment with either the right or left hand.
Professional Mechanical Stage: This microscope has a full-featured, oversized 140mm x 140mm fully mechanical stage. The slide locks in place in the stage clip, and stage and slide holder can be moved with X-Y axis control knobs. The precision controls allow you to easily move the stage with fine precision, no fumbling the slide under the clips. There is a graduated scale printed on the slide holder to allow you to maintain a record of the location of various structures on a particular slide.
Built-in Adjustable Intensity Halogen Light: This microscope has a built-in 20 watt halogen bulb, with adjustable intensity light controls. Beware of cheaper models that use a tungsten bulb or have a simple on/off switch with no brightness controls. Two spare halogen bulbs are included with your microscope. The microscope has a built-in N.A. 1.25 Abbe condenser under the stage with an iris diaphragm. This advanced condenser can be focused separately with its own focus knob and gives you incredible control over the amount and focal length of light aimed at your specimen and is critical for high-powered magnification viewing. A swing-out filter holder is included as are a set of blue and green viewing filters.
Objective Lenses: .DIN 195mm achromatic 4x, 10x, 40x (spring loaded), 100x (oil immersion, spring loaded).
Eyepieces: Two (2) 10x 18mm and Two (2) 20x 10mm with molded rubber eyecups. 23.2mm diameter.
Magnification: 40x, 80x 100x, 200x, 400x, 800x, 1000x, 2000x with included eyepieces
Microscope Head: Seidentopf type binocular head. 30 degree incline. 360 degree rotation.
Interpupilary Range: 55-75mm, marked with graduated scale on microscope head.
Stage: 140x140mm stage. Stage moves, slide holder moves. Movement range 75x45mm
Focuser: Tension adjustable, single arm dual fine/coarse focuser. Right and left side focusing. Focus range: 30mm. Focusing interval: 0.002mm
Diopters: Adjustable left eye diopter variation plus/minus 5 diopters.
Light Control: NA 1.25 Abbe condenser with stand-alone focuser, adjustable iris diaphragm, and swing-out filter. Blue & green filters included.
Light Source: 6v, 20 watt, infinitely adjustable halogen light, two spare bulbs included.
Power: 110v, USA plug power cord included.
Nosepiece: Internal positioning quadruple nosepiece.
Included Accessories: Plastic microscope dust cover, bottle of immersion oil, spare fuses.
Optional Eyepieces: 15x (Part #862801), 16x (#862803).
Optional Digital Camera: 0.3 MP Digital Camera (#844035), 1.3 MP Digital Camera (#844130), 3.0 MP Digital Camera (#844310), 5.0 MP Digital Camera (#844510), 9.0 MP Digital Camera (#844900).
Darkfield Condenser Numerical Aperture: 0.7-0.9