There are many ways to clean a microscope, from solvent wiping to scrubbing. Solvent wiping is the most portable method, but it is the least controllable, and it often results in uneven distribution of dirt and contaminant residues on the surface. Therefore, it should be used with caution. Another method is solvent spraying. A solvent spray is a spray that emits high-speed solvent particles, which scrub the surface and cause drainage.
Ultrasonic cleaning is a good choice for tough metals, such as stainless steel, and is considered the most gentle method. Ultrasonic waves cause tiny bubbles to form and collapse in time with the cleaning frequency, releasing a burst of energy that dislodges dirt particles. However, ultrasonic cleaning can damage soft metals. For this reason, pre-washing is recommended.
Emulsifying and demulsifying systems both have different levels of purification. Emulsifying systems hold contaminants in suspension while demulsifying systems do not. These types of systems are used in high-volume cleaning operations. In low-volume operations, emulsifying systems are used because the contaminants tend to build up on surfaces after many cleaning cycles. It can also cause residual contaminants to remain on surfaces that are cleaned with demulsifying methods.
High-frequency cleaning is a powerful method, but is not suitable for delicate materials. Mirror polished surfaces and glass are not safe from high-frequency cleaning. However, the 40-kHz frequency can effectively clean most types of pollutants. These bubbles are big enough to clean small holes, but small enough to penetrate into detailed objects. Therefore, this type of cleaning is the best option for precise optics.
In one study, some microscope files were subjected to ultrasonic cleaning for a duration of 10 minutes, followed by washing in a washer disinfector. Another group was a control group that did not use any cleaning methods. Each of these groups was then inspected with a light microscope and scored according to a standard scale. The ultrasonic cleaning group showed significantly less debris than the other groups. For details on owning a Large Ultrasonic Cleaner, visit a site such as www.hilsonic.co.uk/
Microscope parts will only need a couple of minutes in this type of cleaner and any solvents should be used sparingly. The safest option is simple water plus a small amount of soap. Other tips include using demineralised water as tap water can leave residues on the fine surfaces. Placing the items in a plastic bag with tiny perforations might also be a good idea for added protection.