Compound microscopes are high powered microscopes that can achieve a greater magnification than low powered or stereo-microscopes. They can do this since they utilise several lenses – the ocular and objective lens, which achieve a greater magnification and resolution.
As a result, they are typically used to observe a greater amount of detail for example when analysing things like cell structures, blood samples and bacteria.
Therefore, if you want a microscope that will truly enable you to see the world of the small in maximum detail, a compound microscope is probably your preferred choice.
What Is A Compound Microscope?
Buying a microscope can be difficult, because of the many ranges and types of microscope on the market. Generally speaking, specialists use a compound microscope, as it is a professional microscope, which allows a really high magnification. This high magnification is created by convex lenses, which are fitted at the bottom of a hollow tube. A spectacle maker named Zacharias Janseen first created the compound microscope in in 1590. Over time, the compound microscope was altered and refined by other scientists, such as Galileo in 1610, to help create the most effective compound microscope, which is in use today.
The power of these microscopes is incredible, with magnifications of 4X, 10X, 40X and 100X. With the objective lenses in use in a compound microscope, it is possible to achieve magnification of 1000X. This high magnification, allows users to see specimens at 1000 times the actual size. However, some compound microscopes are capable of reaching magnification levels a lot higher than this.
- AmScope M150C LED Compound Microscope
- Price: $
- Magnification: 40X, 100X, 250X, 400X & 1000X
- Light source: LED illumination system
- Other Features: Widefield optics, Cordless, Awarded Best for Students
- OMAX LED Binocular Compound Microscope
- Price: $$
- Magnification: 40X-80X-100X-200X-400X-800X-1000X-2000X
- Light Source: LED light, intensity adjustable
- Other Features: Full solid metal frame construction with stain resistant enamel finish, 5-year warranty
- Celestron CB2000CF Compound Binocular Microscope
- Price: $$
- Magnification: 40x to 2000x
- Light Source: LED Light
- Other Features: Includes 10 prepared slides, Abbe condenser with iris diaphragm
- Vision Scientific VME0007B-100-LD Binocular Compound Microscope
- Price: $$
- Magnification: 40x—2000x
- Light Source: LED Illumination
- Other Features: Abbe Condenser, Coaxial Coarse & Fine Focus
Why Choose A Compound Microscope?
A compound microscope is generally used in medicine and science to achieve and maximize the results. This microscope is specialist, because it allows a higher magnification than other types of microscope. By having such a powerful magnification, specialists can examine specimens or objects at a superior quality and examine intricate details, which could be missed if a microscope with less magnification was used. These small details can be vitally important, so making sure you have the microscope capable of reaching these details is essential in many cases.
Buying a compound microscope is usually important to those who need a higher quality of magnification. Biologists, Forensic Scientists, Medicine – these are the types of occupation who will need a compound microscope. Due to compound microscopes being so effective, they tend to be more expensive so isn’t ultimately recommended for beginners.
Compound vs Stereo Microscope
These are probably the two most common types of microscope and are referred to as high powered and low powered, respectively. A compound microscope is typically used for analysing specimens that require a greater magnification, while stereo microscopes are usually used to examine larger samples including insects, bugs and rocks.
- Compound – Usually a compound microscope has many objective lenses that go from a magnification of 4x-100x. Therefore, if you was to use a 10x eyepiece combined with a 100x objective you could achieve a magnification of 1000x.
- Stereo – Magnification of stereo-microscopes go from 6.5x to 45x, and are termed stereo as they utilise at least two eyepieces,, which provide a three-dimensional image of the sample.
What Should I Look For In A Compound Microscope?
Functionality – When buying a compound microscope you will need to consider whether you want a monocular, binocular or trinocular microscope. In simple terms, this just means a microscope with either one, two or three eyepieces.
How do you know how many eyepieces you will need? There are a few deciding factors:
- Magnification – Monocular microscopes are work well up to 1000x magnification. However, if you want to achieve greater magnification you will want to opt for a binocular microscope.
- Ease of use – Many people prefer to use a binocular scope simply because they are more comfortable to use.
- Utility – The majority of monocular options do not feature a mechanical stage that are essential for more complicated investigations. Whereas the majority of binocular scopes do include a stage, therefore this is something worth noting.
Having a microscope, which will last, is important because they can be expensive pieces of kit. If you’ve spent a lot of money on this instrument, it is important that it lasts as long as possible and works perfectly. The durability of a microscope can be affected in numerous ways; such as if the microscope is being used a lot, moved around frequently and the materials that it is made of.
A great way to ensure you are securing a microscope that will last is to buy from a reputable brand with a solid reputation. Much like buying other engineered products, buying from a brand you can trust is always advisable. This will ensure an ergonomic design that is comfortable, and perhaps most importantly a microscope with amazing optics that will provide a great user experience.
There isn’t any point spending your money on a compound microscope if it isn’t as effective as you need it to be. It would be a real waste of money if you bought a microscope that didn’t have the quality you needed to perform a task.
Objective lens – The quality of the lens is fundamental to a microscope, in particular the quality of the objective lens is paramount. Second to this, you will want to consider the quality of the eyepieces. The gold standard for a top notch objective lens is an achromatic lens – or a color correcting lens. These lenses correct bending light, since different colors have a different refraction, causing the image to curve under the lens.
Eyepieces – For the eyepiece, ensure you opt for a Widefield (WF) or Super Wide Field (SWF) eyepieces. This will ensure easy viewing – the wider the lens the better for viewing is the common rule.
Top Rated Compound Microscope Reviews
1. Omax 40X-2000X Lab LED Binocular Compound Microscope
The Omax brand is lesser known than some of the bigger names out there, but they offer value for money with fairly decent optical quality. This unit in particular overall have good user reviews, so if you’re on the lookout for a budget model, it will certainly suffice.
The CS-MD82ES10 is a LED compound microscope equipped with a camera, enabling you to look at the specimens in detail and keep a record of them on file. Similar to other microscopes within this price range, this Omax model is accompanied with a magnification power of 40x – 2000x and 4 objective lenses (4x, 10x, 40x, and 100x oil immersion), as well as two eyepieces (10x standard and 20x for a more in depth view of your specimens).
The bottom line is that this Omax microscope provides a similar standard to those seen in high schools and colleges, yet, optical microscopes don’t really exceed these magnification powers, so you could certainly use it in more clinical environments, for instance, microbiology laboratories have been known to use them as well as veterinary surgeries.
The Omax digital microscope comes equipped with a good quality mechanical stage, which in our view is an essential component of a good quality microscope. Positioning a glass slide by hand can be both time consuming and messy, but with handy controls in the form of knobs positioning the slide and homing in on a specific part of the slide becomes straightforward.
The LED illumination is also highly desirable for the modern microscope user, unlike older halogen lighting; LED is much brighter and doesn’t discolour the sample. This is even more appropriate for live samples, especially since LED are cool to the touch and don’t generate as much heat as halogen bulbs, which can easily dry out live samples and even kill them. This is ideal for analysing semen motility, or looking at live samples and carrying out a cell count. Analysing blood samples is also easier for example a peripheral blood smear, although bear in mind that it is only suitable for brightfield microscopy as its condenser can’t go beyond the 1.25NA Abbe Condenser on the model.
The Omax digitial microscope is also fitted with a camera, which does put it above many other models in the same price range and is ultimately the reason it has been added to our list. A lot of other brands of microscopes offer only modular cameras, meaning you must attain the correct resolution camera, then work out how to mount it onto your microscope (if it does at all). You then also have a camera on your eyepiece, obstructing the use of the eyepiece – it’s either the camera or the eyepiece. The Omax is a truly digital microscope and is equipped with a USB port on the exterior of the head, so you simply need to plug it in and connect it to your MAC or PC. Overall, this model is user friendly, easy to setup and so is perfect as a gift for students of any age who have a keen interest in science.
2. AmScope M150C Microscope
Many people just want an easy to use microscope equipped with the latest features. A great option for those looking for such a microscope is the AmScope microscope, which has a fantastic reputation among novices and professionals alike.
There’s really no need for an over complicated light microscope for students, since those in an elementary school, junior high school, or high school lab setting are just learning the ropes. In fact, an advanced microscope may actually do more harm than good for those just learning the basics of microscopy, where words such as darkfield and phase contrast may cause confusion. Additionally, animal breeders of all varieties may not need an advanced model as a simple light microscope will allow them to analyse fecal smears and carry out semen inspection and the likes of a a brightfield compound microscope will probably be wasted as their extra features add no advantage.
This AmScope microscope is ideal for people wanting to do basic light microscopy and can also work well as a veterinary microscope, homeschool microscope, or basic breeder’s microscope.
The condenser is a fixed type, meaning you are unable to alter it or transfer it for a darkfield condenser or phase contrast condenser at a later date. Therefore, this microscope is suitable only as a brightfield microscope – meaning you will see a bright background surrounding your specimen and your specimen illuminated by the light travelling through it. This is ideal for common microscope applications such as cheek cell smears, looking at plants cells and onion cells.
The mechanical stage features two control knobs that allow you to glass slide containing your specimen in both the X and Y directions, providing both precision and control when analysing your specimen. This is a very helpful for teachers and hobbyist who are interested in learning and educating people. Be aware that the images doesn’t show the mechanical stage.
The AmScope objective lens are achromatic meaning there’s no need to be concerned about color distortion. It provides true color images without any disturbances. The one that we bought was perfectly clean (a few complaints I’ve seen online mention dirty microscopes, this is something I’ve yet to witness). The eyepieces for the B100-MS slot in and out of place without any locking meaning you can use pressurized air to clean down the ocular tube, eyepiece, objective lens and use a simple cleaning cloth – very easy to do.
The quality of the optics is very good for this price range. The lenses themselves are non plan meaning the objectives are slightly curved so there is a little area that is out of focus in the field of vision. This won’t be picked up by the average student or hobbyist, only the experienced microscope user who has handled many different models. The only reason it was noticed is due to my experience using many microscopes over the years.
The lighting in this microscope is a tungsten bulb, which provides a good amount of illumination, although no dimmer is fitted, so if you planned on being able to modulate the light, this scope isn’t ideal. However, an easy solution to this is to utilise a USB camera instead of an eyepiece to view in the screen and digitally control. Another common concern with a tungsten light source is that it can get quite hot, so caution must be exercised!
In terms of magnification, the B100B-MS has a magnification power ranging from 40x- 2000x. As a result, it comes accompanied with 4x, 10x, 40x, and 100x objectives, and both 10x and 20x eyepiece sets. This means it can provide 40x, 80x, 100x, 200x, 400x, 800x, 1000x, and 2000x power. This is true since magnification power is a result of eyepiece magnification x objective magnification, therefore, objectoves x10 and then x 20. Although, its worth remembering that 1000x is referred to as “empty magnification” since no additional resolution is resulting via the microscope’s lenses.