Protective gloves against chemical risks to DIN EN 374, protection against permeation to EN 374-3: protection Class 1 to 6 (the higher the class, the greater the protection); at least Class 2 must be attained with three of the test chemicals in the test.
The code letters of the chemicals against which the glove provides protection constitute part of the marking. The test standard must be stated, and the "test beaker" and "Erlenmeyer flask" pictograms must not both be used on the same product. The code letters and the corresponding test chemicals and their substance classes are indicated in the table.
|Code letter||Test chemical||Substance class|
|E||Carbon disulphide||Organic compound containing sulphur|
|H||Tetrahydrofuran||Heterocyclic or ether compounds|
|K||Sodium hydroxide, 40%||Inorganic base|
|L||Sulphuric acid, 96%||Inorganic acid|
During selection of the test chemicals, attention was paid to coverage of the widest possible range of substance classes. For this purpose, the smallest representative of a homologous series of organic compounds was selected which could still reasonably be handled. Since the diffusion rate decreases with increasing molecular size, it can be anticipated that when chemical protective gloves are used against higher representatives of the homologous series, protective action is attained which is equally good or probably even better. It is however essential that the manufacturer's information be studied or the manufacturer consulted directly if appropriate with regard to whether the glove affords protection against the agent, and if so, for what duration.