Sentinel X400 Sludge Remover 1L

By Sentinel Product code: 28178 Pack size: Each

£20.98 Exc. VAT £17.48

Product Details

High performance cleaner, specifically designed for cleaning older central heating systems. A non-acid treatment which restores circulation to radiators and pipework. Ruthlessly efficient formula shifts built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution.

Technical Specification
Brand Sentinel
Manufacturer ID X400L-12X1L-GB
Safety Data Sheet click here
Type Cleaner
Volume (L) 1
Volume (ml) 1000
Container Type Liquid
Range Name X400
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 6pm for Monday delivery
  • Orders placed after Sunday at 6pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 or £5.00 for orders over £25, to arrive before 12pm on the scheduled days above

Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)

Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)

Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page Items over 30kg can only be delivered next Business Day Mon-Fri. Orders placed after 9pm Thursday will be delivered the following Monday
More about Delivery & Returns
Click & Collect details

Collection Details

We are fully open and delighted to welcome our customers into our branches. Our opening times are 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday

We advise that you check your local branch is open on the branch locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the branch you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Please wait for your text or email before coming to collect it and be aware that we will still have health & safety measures in place, so we ask that you observe the branch guidelines.

Don’t forget your mobile number – Please ensure that your mobile number is added so that we can text you when your order is ready to collect.

Sentinel X400 Sludge Remover 1L is rated 4.6 out of 5 by 32.
Rated 5 out of 5 by from Excellent service Good sound service no probs
Date published: 2021-04-22
Rated 5 out of 5 by from X400 X400 sludge remover does whst it says
Date published: 2021-03-19
Rated 2 out of 5 by from It didn't. Going by our Magnaclean filter there wasn't any sign of the system being de-sludged, there wasn't any evidence of particles sticking to the magnet after two weeks. The water was dirty brown but it looked as if the pipes/sludge were being given a clean but not a clear out. Perhaps a power flush is the next job.
Date published: 2021-03-18
Rated 5 out of 5 by from Cold rads First time using this product turned all rads off then each back on in turn to force through been in a week now and all rads red hot time to drain and put inhibitor in
Date published: 2021-03-02
Rated 4 out of 5 by from Best sludge remover going.. Effective and long lasting.
Date published: 2021-02-28
Rated 5 out of 5 by from Brilliant! I can't recommend this enough, short of having to power flush our system I decided to give this a go. Left in system for 3 weeks running and all cold spots have gone in different radiators. Fantastic stuff!
Date published: 2021-02-06
Rated 5 out of 5 by from It works Our boiler had very bad Kettling noises. Used X400 after drain down system instant improvement no more noise left in system for two weeks drained and replaced with X200 and inhibitor no more noise
Date published: 2020-08-06
Rated 5 out of 5 by from X400 Great stuf did the job nicely -nnededed to buy a second bottle as central heating so big
Date published: 2020-08-03
  • y_2021, m_9, d_18, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.19
  • cp_1, bvpage1
  • co_hasreviews, tv_2, tr_30
  • loc_en_GB, sid_28178, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_toolstation-gb
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 53.08ms

You might also like

Hey, browse our site often?