Polti Kalstop Anti-Scale Phials, Pack of 20

Product information

Kalstop is a non-toxic, biodegradable organic product which helps boost steam power. It also extends the life of your steam generator's boiler and reduces power consumption. Contains 20 phials.
Age Restriction
Eligible for International Delivery
Model name / number


  • Click & collect

    Click & collect from John Lewis and Waitrose shops tomorrow from 2pm
    Find out more
  • Collect+

    Collect + from a local shop from Tuesday, postcode exclusions apply
    Find out more
  • UK delivery

    Standard delivery within 5 working days
    Named or Saturday UK delivery
    Named day UK delivery pre-10.30am
    Find out more
  • International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Q & As

Rated 4.8 out of 5 by 16 reviewers.
Rated 5 out of 5 by Vital for the smooth running of my polti vaparetto This product stops my steam cleaner from dripping at the nossle. It keeps the water tank clean and helps the smooth running of my steamer. I always use this each time I fill the water tank. 29 March 2016
Rated 5 out of 5 by Very helpful I did not know these exhisted. I have had a Polti steam cleaner for some time. Living in a hard water area it's a concern that this will cause damage to the cleaner. Good value for money I think. 24 February 2016
Rated 3 out of 5 by trying to avoid staining from the steam cleaner! I am not sure adding these phials to the water cylinder of the steam mop is actually working, its difficult to tell. I will carry on using them for another month..and see if it has made a difference to staining from steam cleaning a stone floor. 09 February 2016
Rated 4 out of 5 by Initial thought Too ealy to post a definitive revue only time will tell the ffectiveness of the product but, so far so good. 27 January 2016
Rated 5 out of 5 by Useful product for Polti iron Very useful for Polti iron.Click and collect should not incur a collection charge.Why bother to go and collect it if you could pay to have it posted. 26 January 2016
Rated 5 out of 5 by Good product. It does well what it says on the information pamphlet. 16 September 2015
Rated 5 out of 5 by Great product Have been using this for over 20 years now, and my political still works as well as ever! 14 July 2015
Rated 5 out of 5 by Polti kalstop anti scale phials Brilliant use this all the time in my steam generator iron. 04 February 2014
  • 2016-05-28 T11:20:55.007-05:00
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More than 10 in stock