Skip to main content

ISO 28706-3:2017

Current Date published:

Vitreous and porcelain enamels — Determination of resistance to chemical corrosion — Part 3: Determination of resistance to chemical corrosion by alkaline liquids using a hexagonal vessel or a tetragonal glass bottle

ISO 28706-3:2017 describes a test method for the determination of the resistance of vitreous and porcelain enamelled articles to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a hexagonal vessel in which six enamelled specimens or a tetragonal glass bottle in which four enamelled specimens are simultaneously tested.

NOTE 1 The resistance to any alkaline liquid can be determined. However, the test method was originally used for the determination of the resistance to hot detergent solutions, within the neutral and alkaline range, used for washing textiles.

NOTE 2 Since detergents are continually subject to alterations in their composition, a standard test solution is specified which, in respect to its alkalinity, wetting properties and complexing behaviour, can be considered as a typical composition for the detergents present on the market. The pH value and alkalinity of the standard test solution depend on the proportions of sodium tripolyphosphate, sodium carbonate and sodium perborate present; sodium tripolyphosphate acts simultaneously as a complexing agent. The wetting properties of the standard test solution are obtained by the addition of alkylsulfonate. A higher sodium perborate content is not considered necessary since the effect of oxygen on enamel is unimportant and an increase in the perborate content does not cause any significant alteration in the alkalinity of the standard test solution. The testing of different enamels using this standard test solution and other test solutions (including 5 % sodium pyrophosphate solution) has justified the use of this standard test solution for determining the resistance of enamels to hot detergent solutions.

Get this standard Prices exclude GST
PDF ( Single user document)
$190.00 NZD
Networkable PDF
Price varies
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 13

Previous versions

Keep me up-to-date

Sign up to receive updates when there are changes to this standard

Related Information

Similar Standards

  • BS 1344-22:1994

    Methods of testing vitreous enamel finishes, Determination of resistance to thermal shock of coatings for fabricated sheet steel components such as burners and pan supports for cookers

  • BS 4900:1976

    Specification for vitreous enamel colours for building purposes

  • BS 7371-10:1994

    Coatings on metal fasteners, Specification for organic coatings

  • BS 7793-1:1995

    Vitreous enamel coatings for use on bolted steel panels, Specification for coatings on bolted steel panels for use in agricultural slurry tanks

Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 13

Previous versions

ISO 28706-3:2017

Get this standard Prices exclude GST
PDF ( Single user document)
$190.00 NZD
Networkable PDF
Price varies

Request to add this standard to your subscription

ISO 28706-3:2017

Price varies
Online library subscription

Your organisation’s Account Administrator must approve a request to add a standard to your subscription.

You may add a comment to the administrator below.

Cancel