Skip to content
Sign up to our newsletter for 10% off
Sign up to our newsletter for 10% off

Instructions for Replacing INST-SC-REF whole house refillable sachets anti-scale

Product Codes: SC-REF16S and SC-REF32S 

Thank you for your purchase and for choosing the greener option for replacing your media 

How to Replace Your Filtration Media

1) Locate the correct housing ie with code SC16 or SC32 

2) Turn off the water supply. 

3) Take a bucket and place it under the filter housing to catch any water spillage. 

4) Then press the red or black button on top of the housing unit (if you have one) to release pressure.  Otherwise open up the cold water kitchen tap.

5) Remove the bottom housing from the head (Lefty loosey / righty tighty!)

6Remove the Green topped “SC” cartridge and open it

(Your cartridge might be either a quarter turn twist anti clockwise  / pull off at the top) or have a jam jar type lid at the bottom which unscrews

7) Discard the old media.

The water filter black media can go on flower beds etc - but not on compost. 

8) Rinse out the cartridge casing with cold water.

You can also wash the rubber washers in warm soapy water - to remove any residue. Then rinse and replace.

9) Carefully pour the new media from all of the bags into the cartridge casing.

To make one SC16 use ONE bag of SC-REF 

To make one SC32 use TWO bags of SC-REF 

Important Note: Do Not Overfill


The media / powder have been carefully measured. It should only look about a third full (it expands / volumises when in use. But the water is not supposed to force its way through it )  

10) Close cartridge and re-insert into the housing unit. Take care to position the cartridge top and bottom correctly inside the housing. 

11) Finally: On the housing: smear some Vaseline on the thin black rubber oring that sits in the lower bowl.

Make sure to put the oring back in its correct place. 

You can also put vaseline on the screw threads to make the housing easier to open next time. (But do not put Vaseline on the cartridges). 

12) Close housing. Do not over tighten. And turn the water supply back on. 

Open up your cold water taps for 5 minutes to flush and let any trapped air escape.

The water may look cloudy for a while but will settle down after several minutes.


Any Problems? Please Telephone 020 8761 6611

Important Note re Reminders

To avoid long term bacteria build-up it is important to change or disconnect your water filter cartridges on time.

We will email you reminders when it's time to change, but please make sure you whitelist our email address so these reminders aren't sent to spam.

And/ or set an alarm now on your mobile or use Siri etc

Please note your feedback and any suggestions as to how we can improve our service are always appreciated.


Thank you

Sales Admin Team
Telephone 020 8761 6611

Water Filter instructions / Guides for fitting and installing


Need advice?
Please call us on
020 8761 6611


UK Water Filters Ltd
Unit D120
Parkhall Industrial Centre
SE21 8DE

UK Water Filters Ltd a Company Limited by Guarantee,
Registered in England,
Company Number: 05249436,
VAT Reg. No. 863 7634 91


Questions? Call us for friendly advice
+44 (0) 20 8761 6611




Drink to your health

Our water filter systems can remove harmful pathogenic bacteria, cysts, parasites, and unhealthy chemical contaminants such as Chlorine, while at the same time leaving in the essential minerals your body needs.


Save money on bottled water purchases by regularly usingfiltered water. Get your highest quality water filters at the best price here.


We supply the widest range of water filters for any needs - residential or commercial.