Care And Handling Tips For Field-Microscopes

A field microscope is the type of microscopy used for field work. Standard laboratory type microscopes are not always ideal for use outdoors because they are often not sturdy enough. Field-Microscopes , which are lighter and more compact, are built to withstand the tough handling that characterizes field work. However, they should also be handled and cared for like every other sensitive instrument. Here are some important handling tips necessary to keep your field microscope in top shape:

Using the field microscope

Even if you will be using the field microscope outdoors, always try to find a solid, flat and sturdy surface on which to mount it. This is to ensure that the specimen will not slip and also to prevent the microscope from falling off.

Optics

The field microscope is generally a sturdy instrument, which allows it to be carried around for field studies. However, it’s wise to remember that it is still a sensitive instrument. Jarring can actually damage the microscope and break the optical system. Avoid touching the lenses of the objectives and the eyepieces at any point. Oils and dirt on your finger can soil or scratch the glass.

Magnification and focusing

The value of the field microscope is in its magnification power, so it’s important to care for these components well. Use the lowest magnification power and move gradually to a higher magnification. This will help prevent you from turning the objective lens too much. If you use the wrong magnification, you will usually push the objective further and it might end up touching or even breaking the glass slide. When using the focusing mechanism, start with the coarse focus first before refining the image with the fine focus.

Illumination

The illuminator on Field-Microscopes is usually composed of a single lamp. However, to provide lighting in the field where no power supply is available, some units equipped with battery powered LED light may be used. This type of lighting will usually suffice, although for a brighter, more intense illumination, an external illuminator will do.

The care and handling of the field microscope illuminator is quite simple: turn on the unit when viewing and adjust the intensity only when necessary. After use, switch off the light before storing the unit. Check what type of lamp your unit is using. If you replace the bulb with a unit that is not compatible with the instrument, you could damage the instrument.

Handling and transporting the field microscope

Always hold the field microscope upright with both hands – one hand to support the base and another to grip the arm. This is the most stable way with which to handle any microscope and prevent you from dropping it. The upright position will prevent the eyepiece or the slide from slipping.

Since the field microscope will be transported regularly, it’s best to keep it in its carrying case. This should provide it enough protection during transport. Some Field-Microscopes are designed to be waterproof so it will probably survive some rain showers or a short dip. However, moisture can affect the unit. Try to keep it dry as much as possible and if it is ever exposed to moisture, wipe it dry immediately.

When not in use, keep the microscope covered. Store in a dark, cool place away from moisture.

Cleaning the field microscope

The field microscope will last longer if it is maintained properly. Because of the nature of its use, it is more likely to gather dust and dirt. Do not use chemicals on the instrument and avoid wiping it with rough clothes. Abrasive material can easily scratch the unit, especially the optics.

Use a lens cloth to wipe the lenses. Generally, wiping the unit periodically will keep the lenses dust-free. Stubborn dirt on the lenses should not be scraped off because this will put too much pressure on the lens which might break it. Scraping can also scratch the lens, which will damage its magnification. Use an appropriate cleaning solution instead and wipe gently. Don’t use paper or pulp-based wipes such as tissues or paper towels because these contain rough fibers.

The field microscope body is usually made of metal, with some parts of it made from plastic. These areas have to be cleaned as well because they also tend to collect dirt and oils. Clean these parts with an alcohol pad but make sure to avoid the sensitive lenses.

Field-Microscopes are tough units and with care, they should have a long service life. Watch out for any signs of wear and tear or a decrease in its performance. Loose knobs, defective focusing and less than satisfactory performance are also signs that the field microscope may be nearing its serviceable period. If possible, have it serviced professionally about once every year.