This process can take several weeks and needs much effort and patience. Caused by the way of their production, you can often find sediments at the inner surfaces of the outer slides. They begin to come free by playing the instrument and often they make the slide stocking. These dark or green sediments have to be removed very often by cleaning the inner and wiping out the outer slide. Reiterate this procedure, up to the surfaces of the slide are clean.
Sediments become less and less.
For the wiping of the slide we recommend our Cleaning Set. In any case it is important to prepare the slide as described in our instruction for use. After this, spray a bit water mist and repeat it if the slide is dry. If you are not content with it, you can dose again without cleaning the slide every time before. One of the two flasks is empty before the other one is.