The answer to this question varies from manufacturer to manufacturer. Some suppliers like to offer a neat, premixed solution that can be used to fill the tank and is ready to go. This work alright for smaller tanks of say, less than 25 litres, but for a tank larger than that it can become quite laborious to fill. With some customers having tanks upwards of 200L, they would need a specialist pump to pump the solution into their tank.
Over the years we have seen many different companies use different dilution ratios. We found that for us personally, a 10% chemical mix with water is a perfect solution. It means that we can fill up to a 250L tank easily as we can pour a 25L drum into our tanks without any issue. It also means that you can adjust the dilution rate should you require it. For example, when removing very light dirt from PCB’s, we dilute one of our products called ‘Caresol Safe’ down to 5% with water. This gives us enough cleaning power to remove the contaminant while being gentle on the boards and remaining economical. We may also up the dilution ratio to 20% for really heavy-duty cleaning such as thick scale or grease.
When using a chemical for the first time. We always recommend starting on a lower dilution rate and working up should you need to to find the most effective and economical ratio that works for you. With our own range of chemicals, we suggest starting at around 5% and working your way up.
Before using any ultrasonic cleaning chemical you should always check with the supplier about dilution rates and best practice on its use.