bicikla za djecu od 8 godina, Bought this item for the wife and after cleaning her initial pieces of jewelry she is one happy person. She found the best mixture for her jewelry is one part liquid jewelry cleaner to 6 parts water at 180 seconds. Also cleans reading glasses with the same ratio but using liquid dish soap in lieu of jewelry cleaner. Ultrasonic jewelry cleaners are a great way to clean and maintain your jewelry. Not only do they save you a lot of time and money, they are also very easy to use. You no longer have to worry about the hassle of running to a jewelry cleaner, making cleaning solutions or wasting energy scrubbing your jewelry. You will be able to adjust the heat and intensity of the cleaner as required. Once the tank is filled, place the jewelry items into the cleaning solvent and turn the machine on. If you are putting in multiple items, just take care that the jewelry does not damage each other. Do not attempt to clean clarity-enhanced diamonds in an ultrasonic cleaner, as they can be damaged by ultrasonic waves. There is a removable plastic basket attached to the tank to provide ease while operating the device. Most metals can be used in ultrasonic jewelry cleaners, such as gold, silver and platinum. However, tungsten is an exception as it can easily be damaged and it is recommended not to use it with ultrasonics. Gemstones with inclusions and flaws are at great risk of breaking or chipping in ultrasonic jewelry cleaners. Apart from jewelry, you can wash other items like coins, wristwatches, razor blades, eyeglasses, and even optical disks using this device. It features a five preset timer cycle which offers you different durations of cleaning. You are free to extend or repeat the duration in a scenario whereby your items were not cleaned properly in one cycle. Pictures say a thousand words, so these before and after pics say it all. Just bought this today and I was so excited to try it that I've already tested two things. My main reason for buying it was to clean my invisalign trays because, lets face it, they get nasty. As a rule of thumb, a trial cycle typically runs from 2 to 10 minutes. Anything less and you will not receive the full benefits of the machine’s cleaning capabilities. In some cases you may need more than one cycle to thoroughly clean the items. As the cycle kicks into motion, you will notice the ultrasonic vibrations moving through the liquid, whipping up agitated bubbles. The heat and pressure this creates start to remove the dirt build-up. This portable washing machine has an easy to read digital display, and it makes opération quite easy. The cleaner offers you five preset cycles, which ranges from 1.5 minutes to 8 minutes (90 – 480 seconds). This makes it less difficult for you to choose the duration you want your items to stay in the ultrasonic cleaning machine. The Magnasonic MGUC500 also comes with an automatic shut-down feature. After the completion of each preset cycle, the machine shuts itself down automatically to prevent damaging your items by overwashing them. The preset timers enable you to set the duration depending on how dirty the item is and how thoroughly you want it cleaned.