Please Allow 3-5 Days For Delivery On Orders Placed In Our Black Friday Sale

0

Your Cart is Empty

How Long Will My Resin Last?

For Window Cleaners, this is the golden question. 

 

Unfortunately there isn't a straight answer, there are too many variables, some of these are in your control, and some are not.

 

For the uninitiated, deionizing resin is a consumable component, found in Window Cleaning systems to purify water. It can be used as part of a 4 stage RO/DI filtration system, or as a stand alone means to purify water (for more on these, check out our article types of filtration, RO/DI or DI Only). 

 

How long your resin will last before it stops purifying the water sufficiently will be dependent on a number of variables, but there are a few major things that effect its life, more so than others.

These are: 

 

Size of the DI vessel (volume of resin)

Quite simply, the bigger the vessel, the less you require the resin to be changed. Two of our most common sizes are 11L & 25L, however there are plenty of other sizes available. As you might expect, the 11 Litre will need replacing more often, but a 25L bag of resin will provide two full refills of this size vessel. There are also long life vessels such as the HydroPower, that distribute the water more evenly through the resin, improving the amount of pure water you can create from the same volume of resin. 

 

Total dissolved solids of the input water

Tap water is classified as hard or soft, however in reality it's not quite so black and white. In the UK, Tap water TDS readings range from 30ppm to 500ppm (parts per million), and knowing where you fall on this scale will give you an idea of the lifespan you can expect from your resin. Getting a reading from your tap can be done with a TDS Meter - and can help you determine which type of filtration you should be using. For the sake of simplicity, we usually advise that water under 150ppm is considered soft, anything above is hard water. In a soft water area you can be looking at a few months between resin changes, by comparison, hard water can go through resin in a few days (and this is where a more complex filtration systems can lower running costs - See RO/DI LINK). 

 

Water usage per day 

The final thing influencing the life of your resin is the number of litres of water you are purifying. A system using 650 Litres per day is going to need changing far more often than a single operator using only 300 litres. 

 

The only way to get a fixed idea on the life of your resin is through trial and error using the equipment, as you begin to track how many litres of pure water you use every day, and the size of the filtration system you are using. However even this isn't going to give an exact length, as tap water TDS readings are known to change from time to time, you will often find changes even between seasons. In order to budget it's important to regularly check the lifespan of your resin and keep a record. 

 

Need resin, check out our best value Unger 25L Resin Bag



Also in Pure Water Guides

Pure Water Filtration Components Explained
Pure Water Filtration Components Explained

Water filtration Systems in Window Cleaning have multiple components, each of which needs testing and replacing at regular intervals. Here we breakdown the varying components, explain how they contribute to the system and how best to maintain them.
Read More
Types of Filtration Explained - RO/DI or DI Only
Types of Filtration Explained - RO/DI or DI Only

What is the difference between an RO and a DI only system, and which do I need?
Read More
Switching from Traditional to Pure Water Window Cleaning
Switching from Traditional to Pure Water Window Cleaning

If you’ve ever visited a window cleaning forum I’m sure this is a question you will have encountered before. The Pure Water vs. Traditional debate is a tough one to get caught up in - but as with most internet arguments, generally the pendulum falls somewhere in the middle.

Read More

Wholesale Bulk Pricing

This product offers additional discounts when buying in bulk

Quantity Additional Discount
29+ 10%
39+ 20%

Get 4 months to pay on baskets of £99+.

Select PayPal Credit at checkout. Subject to terms.

Get 4 months to pay on baskets of £99+

Subject to status. Min monthly payment applies. Terms apply. UK residents only.

0% interest for 4 months on all baskets of £99+ when you check out with PayPal and choose PayPal Credit.

How It Works

Add to Basket

Pay with your PayPal account (or create one with just an email and password) and select PayPal Credit.

Check out with PayPal

Add the items you wish to purchase to your basket.

Apply for PayPal Credit

Get an instant decision and, if approved, complete your purchase immediately.

REPRESENTATIVE EXAMPLE.

Representative: 19.9% APR (variable); Purchase interest rate: 19.9% p.a. (variable); Assumed Credit limit: £1,200

Minimum payment due still applies to 0% offer balances. Any remaining balance due after the 4-month promotional period or any baskets under £99 will be charged interest at 19.9% p.a. (variable). In order to maintain the 0% offer, you need to keep up monthly repayments and stay within your credit limit. Credit subject to status. Terms and conditions apply. UK residents only. PayPal Credit is trading name of PayPal (Europe) S.à r.l. et Cie, S.C.A. Société en Commandite par Actions Registered Office: 22-24 Boulevard Royal L-2449, Luxembourg RCS Luxembourg B 118 349.