The best resin for window cleaning
You may be wondering:
How do you get good quality resin for window cleaning at low prices?
Well, read on as this article will pinpoint what to look for in mixed bed resin and how to buy it at a low price.
It makes sense to use purified water, that is water that has had the minerals removed from it using resin, as it does not require you to use a squeegee thus potentially saving you time and making you more money.
Why is this?
Pure water will not leave spots when drying, so simply mopping and washing is enough for you to get a spot free finish.
However, there are a few factors to consider when buying mixed bed resin or di resin:
The first factor is quality.
Whats the Bottom Line?
This can cause lasting damage to the glass over time as the spotting becomes deeply etched into the glass and no amount of washing will remove it, unless you use a special compound.
The dissolved solids are measured using a TDS meter (Total Dissolved Solids) as Parts Per Million or simply ppm.
You want your ppm reading to be as close as possible to 0 once your tap or source water has passed through your resin.
The closer to 0 ppm reading the less dissolved solids remaining and the better the finish.
I have personally found that ppm readings of 15 and below to be more than adequate for a spot free window clean.
But here’s the kicker:
You also need to consider the ppm reading at your tap. For example, if your ppm reading at your tap is 100 ppm or less then your di resin will cope with this adequately without getting used up too quickly.
Once you get above 120ppm you will find your resin will lose its strength quickly and so a RO or reverse osmosis unit in front of your mixed bed resin maybe needed.
Most water sources are below 120ppm making a RO unit unnecessary unless you want to make your resin go further or are using underground water out in the country for your water supply. These water sources can have a lot of minerals and TDS readings can be above 200ppm. Best to use a squeegee in this case and save your resin.
How To Keep Thw Quality While Reducing The Cost of Your Resin
The higher the grade of resin, sometimes called di resin, the higher the cost. And this can be a big factor in your profit margins as di resin in New Zealand is not cheap. This is especially so of the resin that claims to take your water down to 0ppm. The average cost of resin in New Zealand is around $15 per litre.
The smaller DI resin tanks are around 5 litres and some tanks can be 20 litres or more. So you are going to need at least 5 litres of resin to start with. This will set you back $75 before freight and GST. Depending on how often you use it and the TDS reading (in ppm) at the source this amount may last you a couple of weeks or more.
Want to know the best part?
Being window cleaners ourselves we wanted to know how to get a good quality resin (0ppm) at a low cost.
How did we achieve this?
We used a cheap resin that will do the bulk of the work and take our reading down to 15ppm or so along with a small amount of a very high-grade resin at the bottom of the tank (i.e. put a litre or two of high-grade resin in the tank first then fill the rest of the tank with the cheaper resin). We call this high-grade resin a polisher as it polishes the ppm down to 0ppm.
Because its not doing much work, that is its only taking the water down from 15ppm to 0ppm and you are only having to use a little, it lasts a long time.
We even run tandem tanks where we put the low-grade resin into the first tank, then the second tank has a couple of litres of high grade in the bottom with the low grade on top. We connect the two tanks together and use it like this. Our resin lasts us a long time before needing to be changed.
Here’s the deal:
We sell our Resin along with the high-grade polisher in a box of 5 x 5 litres vacuum sealed bags plus 1 x 5 litre vacuum sealed bag of polisher, which is enough to do the 5 x 5 litres. Total of 30 litres of resin which works out to cost of $9 litre ($270 at 30 litres)
This di resin for sale is the best quality resin (0ppm) at the lowest cost in New Zealand, and can be used for car washing as well.