Do You Have “the One”? Features of a Quality Inverted Fluorescence Microscope
It is undeniable that fluorescence microscopy is a very essential tool in life sciences, particularly in the areas of medicine and biology. Thus, there are what we call fluorescence microscopes. Nevertheless, it’s not enough that you use any one of them. You have to make sure that they are of excellent quality and can give you the results you desire. So what are the features of a quality inverted fluorescence microscope (IFM)?
Construction of the Frame
The frame of inverted fluorescence microscopes—or even of any other similar instruments for that matter—should be sturdy and can tolerate vibration. A superb frame stability, along with vibration-free mechanisms can make the microscope fit for any stable experiments and observations like patch clamping. A Z-axis motor that is built in will also make it ideal for confocal imaging through laser scanning as well as for deconvolution.
Normally, they contain 4 ports. But you can acquire one that possesses 9 ports. This offers enhanced flexibility and simultaneous access capability to the main image. It can also permit for spectral separation through multiple detectors. They may also be perfect for live co-localization imaging.
For a better thermal and structural stability, it might help if the frame is computer engineered and cast through the use of aluminum alloy. It should also make use of external power source.
Sometimes you can’t help but be engaged in very long tissue cell observations. It can help if your inverted fluorescence microscope is adapting the more recent nosepiece focus technique. The nosepiece is a lot shorter in terms of length so it can offer extreme nosepiece support as well as stability during prolonged studies. A nosepiece guide that is waterproof will make it totally resistant to spills, thus protecting internal optics. Being free of dust can also stop the wear and tear of surfaces of internal optics.
A bottom port (which is optional) is perfect when you’re after imaging at a very low level of light. You may also choose those microscopes that have ports you can easily upgrade to manual or motor.
Fluorescence Characteristics
A quality inverted microscope should have less optical elements with high numerical aperture. This is to improve the performance of its straight illuminator. The newly adapted L-shaped illuminator with a field stop for convenient burner concentration and aperture may be ideal for you too.
Illumination Columns
An inverted fluorescence microscope can have two illumination columns that can be powered at 12 volts or 100 watts. Having it tilted rearward can give you better access to the area where the specimen is, in cases of manual setup. You can also have the condenser rack tilting rearward. For easier manipulator mounting, illumination columns may have pre-tapped holes.
Sometimes the microscope can have its own dual condenser illumination column powered at 100 watts. This provides the addition of two condensers as well as the capability to use them interchangeably. A single condenser column, meanwhile, will have better focus travel for motorized condensers and relief contrast that is newly designed. You can also choose illuminators that only require 30 watts or 6 volts. They are cheaper.
Laser Scanning Confocal Imaging and Deconvolution
A highly effective inverted fluorescence microscope should be able to do these two functions: laser scanning confocal imaging and deconvolution. To accomplish these, however, you need a scientific instrument with a Z-axis motor that is very precise when it comes to optical sectioning. The frame must also have pre-tapped mounts so you can easily attach the device to any vibration isolation platform.
General Qualities of the IFM
There are already a number of inverted fluorescence microscopes that possess a special V-shaped two-tiered design. They give the device its required flexibility without having to modify its frames. You can also brighten images without the need of too much reflection.
The application of two-tiered system provides excellent accessibility to the lower and upper rear ports. You don’t have to alter the fluorescence light path or even the specimen stage. The rear ports are ideal if you want to add laser scanning heads and cameras. You can then keep the microscope’s side free of any extra equipment.
Fluorescence turrets can also function together with filter wheels and motorized shutters for more maximum control of signals generated by emission and excitation fluorescence light.
Highly advanced inverted microscopes can even have dual-camera adapter which you can attach on the left side of the port. It gives two-camera accessibility to the main image.
Certainly, with the advancements of modern technology, finding the features of a quality inverted fluorescence microscope isn’t comparable to finding needle in a haystack.