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Descaler

A product category rather than a chemical: an acid chosen to dissolve carbonate scale. Which acid decides which surfaces the bottle will ruin.

What not to do

Descaler is prohibited by the manufacturer for Steam iron

Unsafe

Do not do this. The risk is established, and it is described below.

Why we say this

Strongly supported

The product category is prohibited by name alongside the household remedy, which is what makes the manufacturer's position coherent rather than merely protective of a warranty: it has designed the scale out with a flush cycle or a physical collector instead.

Sources

  1. What type of water can I use in my Philips Steam Iron or Steamer?

    Philips · Manufacturer documentation

    Relied on for: That descaling agents are named among the things that must not be used in the appliance because they may cause water spitting, brown staining or damage. (states this directly)

    Verification: a person has read the passage relied on.

    Read on The water-type answer in full: what the appliance is designed for, the hard-water recommendation, and the prohibition list. Supports the claim as stated. Lets the catalogue record that the manufacturer prohibits vinegar in its own appliance, which is the strongest kind of evidence it can hold against a household remedy: the company that made the thing forbidding the substance by name, with the damage mode stated.

Last reviewed by a person on .

Precautions

  • Never mix with other cleaning products
  • Check the manufacturer's instructions
  • Rinse thoroughly afterwards
  • Test on an inconspicuous area first
  • Keep away from children and pets

In detail

A descaler is an acid, and the only interesting question about a particular bottle is which one. Commercial products are built most often on citric acid, sometimes on lactic, sulphamic or phosphoric acid, and at the harsh end on hydrochloric acid; a household remedy uses acetic acid as vinegar. All of them work the same way, by converting insoluble calcium carbonate into a soluble calcium salt, and all of them therefore share one limitation absolutely. An acid cannot distinguish scale from any other carbonate, so a descaler on marble, limestone, travertine or cement-based grout attacks the surface rather than the deposit, and the damage is etching, which is structural and cannot be polished out by a domestic method. What varies between the acids is speed, smell, whether the product is a solid or a liquid, and what else it attacks — hydrochloric acid adds copper, brass, zinc and steel to the list, while citric acid does not. Because 'descaler' names a shelf rather than a compound, this record cannot say what is in a particular bottle. The label can, and it governs — and where an appliance maker forbids descaling agents outright, that outranks anything general said here.

Properties

pH
Acidic

What works

Why

Sources for this page

Sources

  1. Care & Cleaning of Natural Stone

    Natural Stone Institute · Trade or professional body

    Relied on for: That acidic cleaners are advised against on calcareous stone because they etch the surface. (states this directly)

    Verification: a person has read the passage relied on.

    Read on Sprint 29 read all nine sections. Earlier sprints had read three: the siliceous-versus-calcareous classification, cleaning products, and sealing. Supports a wider statement — our claim was widened. Three sections of nine had been read and the source treated as complete. The unread six carry the whole preventive programme - coasters, trivets, non-treated dry mopping, slip-resistant mats, worn vacuum wheels, blot-don't-wipe - none of which the register held. They also answer a priority-1 row reading 'no route answers this yet': the authority's position on etch marks is that they are not a cleaning problem and need professional re-polishing. Two oddities are worth the record: dry 0000 steel wool is permitted on water rings, and efflorescence is removed dry because water makes it worse.

  2. What type of water can I use in my Philips Steam Iron or Steamer?

    Philips · Manufacturer documentation

    Relied on for: That at least one appliance manufacturer prohibits descaling agents and vinegar in its product by name. (states this directly)

    Verification: a person has read the passage relied on.

    Read on The water-type answer in full: what the appliance is designed for, the hard-water recommendation, and the prohibition list. Supports the claim as stated. Lets the catalogue record that the manufacturer prohibits vinegar in its own appliance, which is the strongest kind of evidence it can hold against a household remedy: the company that made the thing forbidding the substance by name, with the damage mode stated.

Last reviewed by a person on .

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