Chemical Resistance Chart English - Burkert

The suffix "aqueous" is mostly usedfor water miscible substances (suchas Ethanol) but also for aqueous solutionsof inorganic salts. Due to thegreat number of possible concentrations,an average concentration isalways assumed.Saturated aqueous solutions aredescribed only if explicitly noted andthe reference temperature for allstatements is room temperature.At higher temperatures a reducedchemical resistance must beconsidered.1.3Interpretation ofSymbols+ material is not affected or is slightlyaffected by the chemical: suitable$ various attack level depending onprevailing conditions: limitedsuitability– material exhibits severe attack:unsuitableIf materials are rated as "limited suitability",the time of impact has to beconsidered. At a long period of impactthese materials can be heavily attackedor even destroyed. Therefore theseparts are rated as wear parts and arenot included in the standard warrantyconditions.1.4ReferencesAll the information quoted in theseresistance tables is based on industrialexperience (for example "DECHEMA -Werkstoff-Tabelle", Germany or"DECHEMA Corrosion Handbook"),the data of our material and compoundmanufacturers and Bürkert's ownstringent laboratory tests.In many cases it is not possible tomake a clear statement due to differentservice conditions. In these cases therating should also be "limited suitability".5