Poor mixing, hard water, incorrect filters — all are reasons why spray nozzles can need cleaning. A regular careful check of the spray pattern and pulling the injector will immediately reveal when it’s time for cleaning. Sadly, the nozzle blocking deposits are often stubborn and typically collect in areas that are very tricky to get at. This is why many users will shy away from the tedious cleaning job.
But there is some tech to make the job less gruelling, such as ultrasonic cleaners. These are not only relied on by opticians but also in many medical and industrial domains. The cleaning capacity ranges from no more than a few millilitres to several cubic metres. They all operate on the
