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Anti-Scale Spot Free Rinse De-Ionising 9" x 17" Media Vessel System | Small Scale/Home Window Cleaning & Car Detailing Water Filter (GT1-112-DI)

In stock
Quick Overview
  • Small Scale Car Detailing & Window Cleaning Water Filter
  • Ideal for Use with a Pressure Washer at flow rates of up to 7.5L/Min (6L Model) or 11L/Min (9L Model)
  • Spot Free Rinse - 0 TDS Water
  • Convenient & Cost Effective alternative to Reverse Osmosis & Distilled Water
  • Standard Hose Connections Included
4 Interest Free Payments of $92.50

Anti-Scale Spot Free Rinse De-Ionising 9" x 17" Media Vessel System | Small Scale/Home Window Cleaning & Car Detailing Water Filter (GT1-112-DI)

Our NEW GT1-112-DI Spot Free Rinse Window Cleaning & Car Detailing Media Vessel System produces softened, de-ionised, "TDS-Free" Water (<1 Total Dissolved Solids) to remove contaminants and particles for the ultimate, shiny, scale-free spot-free rinse, reducing the need to chamois or polish surfaces, thus reducing the risk of unsightly scratches and scale build-up! This system is perfect for small-scale applications, or for use with Pressure Washers at home (especially if you have a carbon filter system installed prior, as Chlorine/Chloramine can deplete the DI resin). Ideal for use on Cars, Boats, Trucks, Vans, Utes, Motorbikes, Caravans, RVs, Prestige Vehicles (pretty much any type of vehicle you can think of), but may also be suitable for casual users such as car enthusiasts wanting to do a regular spot-free touch-free rinse of a ceramic coated/paint protected vehicle or those with many glass fixtures around the home (i.e. windows/glass pool fences). Works well with common pressure cleaner brands such as Gerni, Ryobi, and Karcher. The 9" x 17" media vessel is compact in size and stature (for easy transportation and storage), and can be used with Pressure Cleaners at flow rates of up to 7.5L/Min (6L Model) or 11L/Min (9L Model). The inlet of the system is a 1” BSP female port with garden hose adaptors, which makes hooking the system up between your tap and pressure washer super quick and easy. 

Spot Free Rinse Filter Kit 

  • 1x H917FRP-2.5 High Performance Filtration 9" x 17" Pressure Vessel Tank
  • 1x GT36-64N 1" BSP In/Out Head Cap
  • 4kg (approx. 6L) of virgin Indion Mixed Bed DI Resin (or Optional Upgrade to 6kg/9L DI Resin)
  • 2x GT19-35SC 1" x 1" Male BSP HEX Joiners with O-Rings
  • 2x GT19-155 20 x 25mm Tap Adaptors
  • Instructions

See Specs Tab for System Dimensions. 


  • Standard Hose Attachments
  • Suitable for use with pressure washers
  • Spot Free Rinse 0 TDS Water*
  • Removes salts, minerals, and hardness from water.
  • High Capacity Resin – 4Kg = Approx 6L Of DI Resin

*Note: Zero (0) TDS is equivalent to <1ppm TDS. As with any filter, the capacity of virgin de-ionizing resin to remove TDS from water gradually degrades over time. As the hardness of water varies depends on the water source, there is no hard and fast rule for when you should replace the DI resin. As a rule of thumb, DI resin is due for replacement when you notice spots appearing.

What is a Spot Free Rinse? What is Zero TDS Water?

Spot Free Rinsing Systems produce water that has been softened or filtered via Reverse Osmosis, Deionisation (aka. Ion Exchange Resin Filtration) or Distillation, to remove the metals, minerals, salts, contaminants, and dissolved particles (Total Dissolved Solids aka. TDS) that cause limescale build-up, corrode metal, bond to surfaces and dissolve the paintwork finish on cars, windows, and unprotected surfaces. Leaving scale to build up on surfaces causes a lackluster appearance, and ultimately leads to surface damage over time. 

Examples of scale spots on a Car Window, Car Paintwork, and a Glass Pool Fence.

The most common dissolved solids often found in Australian tap water (and notably in areas with typically high TDS like Perth, Adelaide, and Brisbane) include calcium, magnesium, sodium, chloride, aluminum, nitrates, and phosphates. Water that contains high amounts of these salts and minerals (calcium and magnesium ions in particular), tends to bond easily with other ions and compounds to form hard scales and leave behind stubborn white spots once the water evaporates - exactly the same as the type of white scale that builds up in your shower over time!

Why use De-Ionised (DI) Water for the Perfect Spot Free Rinse?

"Zero TDS" DI Water water produces an anti-scale Spot Free Rinse for cars and windows, as there are no residuals in the water after the water evaporates. Having a Spot Free Rinse eliminates the need to use a squeegee or chamois to remove excess water from a surface, thus helping to avoid scale marks, prevent scratches, and stop staining.

DI water is sought after for several uses due to its negligible mineral content, affordability, and the fact that DI systems provide a faster and more economical solution to producing Zero TDS water than RO or Distillation. The quality water produced by our system (low EC/TDS Free) is in most cases better than commercially produced distilled water and even better than reverse osmosis (which retains a residual mineral content after filtration).

How does Indion® Ion Exchange Deionising Resin Soften Water?

In our Spot Free Rinse System, we use only the best premium quality virgin Indion® MB-115 Mixed Bed Ion Exchange Resin from Ion Exchange Ltd, the leading global manufacturer of Ion Exchange Resins for water softening, de-alkalization, and de-mineralisation.

Indion® De-Ionising Resin is a unique mixed bed 60% Sulfonic Acid & 40% Quarternary Ammonium based Polystyrene Copolymer that contains millions of microscopic ion-exchange sites. When water passes through the resin, TDS anions and cations (i.e. Ca2+ and Mg2+) in solution will preferentially bind to the ion exchange sites, leaving ultra pure water as the end product. Over time, the resin media will become exhausted and require replacing.

Purchase replacement Indion® De-Ionising Resin Media HERE.

How do I know when I need to change my resin? Recommended (Optional) Add On: HM Digital Com-100 EC/TDS Pen

As a rule of thumb, DI resin is due for replacement when you notice spots appearing. Using the "quick & dirty" method, you can test for the presence of build-up by placing a few drops of DI-filtered water in a clean, residue-free glass, allowing the water to evaporate, and then checking for the presence of spots - if you notice white spots have formed, it's time to change your filter. Alternatively, to take the guesswork out of checking your resin, you can test the water quality with a properly calibrated EC/TDS Meter, such as the HM Digital Com-100 TDS/EC Pen. Check your water quality once a month according to the above infographic and change the resin when it reaches 30+ uS/cm. *Please Note: Zero (0) TDS is equivalent to <1ppm TDS or <1 uS/CM. As with any filter, the capacity of virgin de-ionizing resin to remove TDS from water gradually degrades over time. As the hardness, salinity and TDS of water varies depending on the source, the starting uS/cm reading of DI-filtered water may vary (i.e. if you have incredibly hard/salty/high TDS water to begin with, then you might not be able to achieve 0 uS/cm), there is no hard and fast rule for how often you will be required to replace the DI resin (for example, it might be once a month or more regularly for some customers, or a few months for others).

Purchase replacement Indion® De-Ionising Resin Media HERE.

Recommended (Optional) Add On: 10" x 4.5" Carbon Pre-Filter System with Pressure Gauge

Chlorine and Chloramine are known to deteriorate rubber and corrode metal, as well as deplete DI resin, so it's recommended to install a carbon pre-filter prior to the DI Media Vessel. FSA's recommended carbon pre-filter setup includes a UV resistant 10" x 4.5" Housing with a Stainless Steel Bracket (which can be wall-mounted and installed in full sun) with a pressure gauge to help monitor filter performance - simply mark the level of pressure on the gauge upon installation or when you install a new carbon filter (reduced pressure over time indicates filter blockage). The Carbon Pre-Filter will provide chlorine-free water for 45,000L @ 7L/Min (with the 5 Micron CTO Filter), and even longer-lasting results with the 0.5 Micron Chloramine Reduction Carbon Upgrade.

GT4-13CTO - 5 Micron Chlorine Reduction Coconut Carbon (For Improved Chemical Reduction on Mains Water)

    • CTO Chlorine Reduction Carbon is our standard recommendation for reducing chlorine and chemicals on mains water - great value and quality!

Chlorine is generally the biggest concern for those on municipal water. Chlorine is added to mains water to disinfect against bacteria and viruses, however, Volatile Organic Compounds and Disinfection By-Products such as Trihalomethanes (THM) and Chloroform can form when chlorine reacts with oxygen and other chemicals in solution - and you can imagine the damage that these chemicals can cause by boosting the potential for oxidisation (and therefore, rust and corrosion) on metal and other materials. The Chlorine Reduction cartridge will provide you with clean water, free from nasty chemicals, and remove or reduce any chemical smells in the water caused by free chlorine.

GT4-13CRC - 0.5 Micron Chloramine Reduction Coconut Carbon (Reduces BOTH Chlorine and Chloramines For Maximum Chemical Reduction on Mains Water)

    • CRC (Chloramine Reduction Cartridge) uses Catalytic Carbon to filter out more chemicals/contaminants than standard chlorine reduction carbon alone (which doesn't remove chloramine). 

Boasting a 0.5uM nominal rating, our 0.5 Micron Chloramine Reduction Carbon Block filter has a huge, highly reactive surface area of composite catalytic carbon designed to denature and neutralise chloramine, chlorine, and other reactive chemicals with minimal contact time. As water passes through the Chloramine filter, Chloramine and other chemicals react with the carbon block surface, producing denatured compounds that are then re-adsorbed by the carbon - essentially neutralising the Chloramine, Chlorine and chemical molecules.

Why remove Chloramine? Chloramine is fast becoming the most important topic when it comes to mains water. Free chlorine has long been the choice for cheap and long-lasting municipal water disinfection, and it can be easily removed from water with minimal contact time. However, the addition of monochloramine gas (NH2CL - an inorganic molecule composed of chlorine-bonded ammonia) is becoming more and more common as a secondary disinfection agent that provides longer-lasting disinfection than chlorine alone. Aesthetically, monochloramine gives off a strong chemical/ammonia smell in the water. Especially when mixed with fluoride (another common municipal additive in mains water), chloramine can even dissolve copper and lead, thus increasing the potential for corrosion and rust on metal surfaces. You may have seen this in action, as this is a common cause of blue/green staining in and around pipes and drains. Do you really want to be using corrosive-chemical-laden water to wash your pride and joy? Our answer is: probably not!


Optional Add On - Media Funnel:

The specially-designed Media Funnel helps you fill the vessel without spilling expensive media, or getting the media stuck inside the drop tube! Use this funnel to save yourself from the hassle of having to try and push the drop tube back down into the dense media (because you've accidentally dropped media inside the tube, and had to pull the tube out to empty it)!

More Information
Type Water Filter

Specifications & Dimensions




Feed Water Conditions 



Working Pressure  
(Ideal Operating Pressure 
= ≤ 700 kPa) 

1000 kPa 


Recommended Flow 



Max Vacuum 

17kPa (5" Hg) Negative Pressure 

Nominal Volume 

13.8 Litres 






<50 mg/L



<200 mg/L



<0.02 mg/L

Height: 50cm (approx)
Bottom Width: 25cm
Depth: 25cm

Inlet: 1" BSP with Standard Male Garden Hose Connection
Outlet: 1" BSP with Standard Male Garden Hose Connection

DI Resin Service Life: Variable depending on incoming water quality


Storage and Safety Instructions

  • Store DI Resin in the shade and do not allow the resin to dry. Keep sealed at all times. Exposure to atmospheric air will cause the Resin to convert to a carbonate form. Keep below 60°C.
  • Acid and Alkali solutions are corrosive and should be handled carefully. Prevent contact with skin and eyes. If oxidizing agents are used, safety precautions should be observed.

DI Resin Technical Information:

  • Indion® MB-115 is a mixed bed ion exchange resin, composed of strong highly purified/super regenerated (40%) acid cation and (60%) base anion resins. Produces reliable results where the highest quality of pure water is required with minimum ionic and non-ionic contamination. 
  • Particle Size: 0.3-1.2 millimeters
  • Chemical Stability: Stable in pH ranges from 0-14 and resistant to oxidizing and reducing agents.
  • Rinse Characteristics: Rinsed with ≥ 17.0 megaohm/cm water to meet stringent quality requirements for ultra purity.
  • Matrix: Crosslinked Polystyrene, Gel Type
  • Cation Resin (40%)
    • Functional Group: Sulphonic Acid
    • Total Exchange Capacity: 1.9 meq/ml
    • Ionic Conversion: 99% minimum in Cl form
    • Moisture Holding Capacity 48-58%
    • Thermal Stability: Up to 120°C
  • Anion Resin (60%)
    • Functional Group: Quarternery Ammonium
    • Total Exchange Capacity: 1.0 meq/ml
    • Ionic Conversion: 99% minimum in Cl form
    • Moisture Holding Capacity: 60%
    • Thermal Stability: Up to 60°C


Return Policy

Due to the nature of the products we sell, a strict return policy is in place. We work with food-grade certified materials that must be un-opened and un-used, so as to be able to be re-sold. This policy falls in line with the Australian Consumer Law, which is designed to protect BOTH BUYERS AND SELLERS. 

You may receive a refund or credit of equal amount, less the Restocking/Out-of-Pocket Shipping Expense Fee, if applicable, and any other deductions that are relevant. 

  • 30-Day Returns Policy: Returns will not be accepted without prior approval or after 30 days of the invoice date.

  • Wrongly Purchased Items/Changes of Mind Policy: Wrongly Purchased Items, or Change of Mind Purchases may be returned for a merchandise credit. This applies to, but is not limited to purchases of products that are:
    • The Wrong Size;
    • The Wrong System;
    • The Wrong Replacement Pack;
    • Due to a Change of Mind;
    • Due to Buyer Error, whereby the buyer has failed to conduct proper due diligence (including contacting FSA prior to purchase in order to clarify the relevant technical specifications, compatibility, requirements etc.) to ensure the product purchased from us is the correct product for their requirements.
  • Restocking/Out-of-Pocket Shipping Expense Fees Policy: All returns will incur a 17.5% restocking fee OR an out-of-pocket shipping expense fee, whichever is greater. 
    • This fee is in place to cover the administrative expense incurred in processing the return and/or the out-of-pocket expenses incurred by us in shipping the item to you. FSA may use its discretion to determine the restocking fee. Please note this policy falls in line with the ACL, and is designed to protect us as the seller from losses incurred due to buyer error. This means that you will NOT receive a full refund of the original purchase price - you will bear the cost of shipping the product back to us, and then you will receive a credit equal to the purchase price of the product LESS the Restocking/Out-of-Pocket Shipping Expense Fee. Please refer to our Shipping Policies (below) for further clarification.
    • Low-Value Returns: Please note that with low-value items, sometimes the cost of sending the item back to us may be more expensive to you, than simply keeping the item. For example, let's say you have ordered 3x meters of the wrong-sized tubing for your needs and paid $12.00. If, for example, it cost us $7.69 to send the item to you, and it would cost you $7.69 to send the item back to us, overall you would be $3.38 worse off (due to incurring $7.69 to send the item back to us, and having $7.69 taken out of the credit) than if you had kept the item and re-ordered the correct product for your needs. 

  • Shipping Policies: 
    • Free Shipping Offer: As part of our offer of Free shipping Australia-Wide, FSA reserves the right to select the most cost-effective courier to effect delivery of the product to you. We make no guarantee as to how long an item will take to arrive due to unforeseen circumstances outside of ours/the couriers' control, including but not limited to: Staff Shortages, Supply Chain Demand, Extreme Weather Events etc.
    • Express Shipping Policy: If you require an item on an urgent or Express basis, it is your (the buyer's) responsibility to contact us directly by telephone on [phone removed by eBay] prior to purchase, in order that we may quote you the options available for Express Delivery to your nominated address, and to organise additional payment for this Express Service. Express Shipping is not included in our offer of free shipping - this service will come at an additional cost payable by the buyer. 
    • Late Shipping Policy: Given that we offer the option for customers to organise Express Shipping with us prior to purchase, cancellations or refunds will NOT be issued on the basis of late or delayed shipping where the customer has opted for our Free Shipping offer. If the item (sent via Free Shipping), arrives late and the buyer wishes to return the item on this basis, the buyer will be liable for the cost of returning the product to us and a Restocking/Out-of-Pocket Shipping Expense Fee will be applicable to the return, as per the listed returns policy line items above. The customer will be issued a merchandise credit.
    • Our offer of Free Shipping does not apply to Returns: Whilst we offer Free Shipping, this does not mean that there is no cost to ship the product - obviously, a shipping expense is incurred, and as with all e-commerce operators that offer Free Shipping, the cost of shipping the product from our warehouse to your nominated shipping address is built into the price of the product. The offer of Free Shipping therefore only applies to the act of FSA supplying the product to you, and does not cover the cost of returning the product from the customer to FSA.
    • Returned to Sender Items: In the case of the buyer being unavailable to sign, refusing delivery, or the item being sent back to us for whatever reason, FSA may, at its discretion, pass the cost of the product being Returned to Sender (i.e. being returned back to us), back onto the buyer. Refer to Restocking/Out-of-Pocket Shipping Expense Fees (above).
    • Lost Parcels: If an item is deemed to be LOST IN TRANSIT by the courier, the customer is entitled to a replacement product or refund in line with the ACL. In the case of a replacement product, FSA reserves the right to send the replacement product in line with its Free Shipping offer. If you do require the replacement item urgently, please get in touch with our customer service team directly to organise Express Shipping. 

  • Product Damage & Product Faults: Any damage to products that are not reported to FSA within 48 business hours of receipted delivery is not covered under our transit warranty. Return shipping is to be paid by the buyer to the address provided by FSA. It is recommended that the customer applies a transit warranty to the return freight item/s, in case of damage.
    • Faults: Should the item appear faulty or doesn’t work as described, you must supply written/photographic/video evidence of the fault to us, so that we may assess whether the unit/item must be returned for testing (if requested). If testing is requested, return postage is to be paid by the buyer. 
      • If the unit/item is deemed to be faulty, compensation will be provided for the postage cost (proof of cost required). 
      • If the unit/item is deemed to be in working order and as described, the buyer will be responsible for the cost of return postage of the product from FSA's premises, back to the buyer. 
    • Minor Damage: Any damages (minor, that can be repaired) will incur a fee, that will be deducted from the total refund which will be equal to the cost of the replacement parts (List Price) and labour charges (if applicable) to repair the system(s). This will be separate from the Restocking/Out-of-Pocket Shipping Expense Fees.
    • Major Damage: Any damage considered to be major and not feasible for repair may be refused and the return request will be void. The customer will be responsible for the return freight or disposal of the damaged unit.

Returns are not accepted on special order items unless the manufacturer allows it. Applicable fees will apply.

If you have any questions about our return policy, please contact us before purchasing. This will also help to ensure you purchase the correct product that suits your requirements.