Barska Microscopes are precision optical tools ideal for professional lab, student studies, and hobby use. Manufactured with extremely small optical tolerances these professional microscopes allow the user to study the smallest of details. The several professional lab microscopes available feature advanced optical technology such as zoom magnification, stereo binoculars dual eyepieces, illuminating LED lights and optical filters.
The newly designed LCD digital microscopes are available in 2 new models; an 8 mega pixel and a 5 mega pixel model. These new digital microscopes work great as student microscopes because they allow the user to take digital photos and videos that can be inserted in to reports. Teachers can you make use of these school microscopes when teaching such topics as microbiology and chemistry.
We also have a selection of high quality blank and prepared microscope slides made of precision optical glass. If you need help selecting a microscope that's right for you use call and talk with a microscope professional.
Microscopes have different types of optical systems that all different styles of observation. Dual eyepiece optical systems known like the ones in stereo microscopes allow for a perception of depth of field. Monocular microscopes use one optical ocular eyepiece resulting in a flat image. Here is a list of different optical systems:
When selecting a microscope an important factor is how the microscope can illuminate the object. Different types of studies need different lighting methods, here is a list the different lighting options for microscopes:
Here are some of the most common Barska microscope terminology features explained. This information will help you determine what each of the microscope features and specifications mean. Barska uses standard lab microscopes terminology in specifications to make choosing a professional microscope a quicker process.
Barska compound microscopes are constructed with two optical paths at the same optical angle. The compound microscope has two systems of lenses for greater magnification. The objective lens provides the primary magnification, which is compounded (multiplied) by the ocular lens (eyepiece). Images produced by compound microscopes are two-dimensional. This type of microscope is used to study very small specimens and requires the specimens to be mounted on a slide.
Microscope eyepiece with an achromatic doublet lens designed in such a way that it does not have to be limited to viewing only in its center, and the portion of the lens that allows non-distorted viewing is larger than a normal lens. This appears to the user as a bigger aperture or "hole" to look through. It therefore has the advantage of being easier to use and more forgiving of a user's head movements. An eyepiece listed as WF10X/18mm would indicate it has a widefield achromatic doublet lens, 10x magnification and is 18mm in diameter
Designed with two separate optical paths with two objective lenses and two eyepieces that provide slightly different viewing angles to the left and right eye. In this way it produces a 3-D visualization of the sample being examined. The zoom provides different magnification and features an inversion system, which allows the image to be viewed normally, and right side up. This type features a large stage for closer viewing of the non-microscopic world like rocks, insects, flowers, and dissection specimens and does not need to be mounted on a slide.
Coarse Focus - This is the rough focus knob on the microscope. You use it to move the objective lenses toward or away from the specimen. Generally use the coarse focus first to get close then adjust the fine focus knob for fine tuning.
Fine Focus - This is the knob used to fine tune the focus on the specimen. It is also used to focus on various parts of the specimen.
Barska's digital microscopes are state-of-the-art integration of high quality microscope and a digital camera. Simply connect the microscope to the computer with the USB cord to magnify the object and view them on your PC screen and with option to save. Digital microscopes are great for educational purposes because several people can view the specimen at once, unlike a traditional microscope where one person can view at time.
Generally a five-hole disc placed under the stage on a high power microscope. Each hole is a different diameter. By rotating it, you can vary the amount of light passing through the stage opening. This will help to properly illuminate the specimen and increase contrast and resolution. The diaphragm is most useful at the higher powers.
Total Microscope magnification - is calculated by multiplying the magnification of the eyepiece by the magnification of the objective. 10x(eyepiece) x 4x(objective) = 40x Total Magnification
Zoom Microscope Magnification - Zoom models allow the user to zoom or change magnification continuously throughout the magnification range providing a low to high power range. For example, a 7x-45x microscope has the ability to magnify the object 7 to 45 times higher than an unaided eye.
When using a binocular microscope with interpupiliary adjustment, there is an adjustment for the distance between the viewers' eyes. A young child will have a small interpupiliary distance (IPD) while an adult will have a larger one. The eyepiece lenses will spread apart or get closer together to fit each individual.
This is the distance between the specimen or cover slip and the objective lens. On compound microscopes that use slides, the stage is adjustable allowing the user to zoom in or out of an image. On stereo microscope the stage is fixed.
Microscope 1-Year Limited Warranty USA and Canada Only, This warranty does not cover consumer caused damages, abuse, normal wear-and-tear, unauthorized repairs or modifications. For more information, refer to enclosed warranty with products.