EN 14483-4:2004

Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus and material
   5.1 Test apparatus: cylindrical vessel
        5.1.1 General
   5.2 Thermostatically controlled liquid bath
        (containing demineralized or distilled water),
        incorporating a stirrer or other rotating device
        for use with one or more pieces of test apparatus.
        It shall be capable of being sealed against loss
        on evaporation and allowing temperatures up to 100
        degree C to be kept constant to 0,1 degree C
   5.3 Thermometer, calibrated and graduated in 0,1
        degree C steps, for use with the thermostatically
        controlled liquid bath
   5.4 Drying oven, capable of maintaining temperatures
        of at least 130 degree C
   5.5 Desiccator, internal diameter of at least 200 mm
   5.6 Polypropylene bottle, of 1000 ml capacity and
        capable of being closed
   5.7 One-mark volumetric flask, 1000 ml capacity
        and conforming to the requirements of class A of
        ISO
   5.8 Funnel, of maximum diameter of 70 mm
   5.9 Balance, accurate to 0,2 x 10[-3] g
   5.10 Cotton wool
6 Test specimens
7 Procedure
8 Expression of results
   8.1 Total loss in mass per unit area
   8.2 Corrosion rate
9 Hot sodium hydroxide test
   9.1 General
   9.2 Test solution, c (NaOH) = 0,1 mol/l
   9.3 Test temperature
   9.4 Duration of the test
   9.5 Test report
10 Other test solution
   10.1 General
   10.2 Test solution
   10.3 Test temperature
   10.4 Duration of the test
   10.5 Test report
Bibliography

This part of EN 14483 describes a test method for the determination of vitreous and porcelain enamelled articles to resistance to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a cylindrical vessel in which only one enamelled specimen is tested.NOTE 1The test method was initially set up for determination of the resistance of vitreous and porcelain enamels to a hot sodium hydroxide solution. Within the scope of this standard the resistance of other alkaline liquids can be tested.NOTE 2This part of EN 14483, which uses a cylindrical vessel is generally used for tests carried out on vitreous and porcelain enamel coatings for the chemical industry.