The glass enamel coating of the Lampart equipment is resistant to almost all organic and inorganic acids and solutions of their salts within the temperature range of -25...+200°C. Exeptions are the hydrogen fluorides and its solute salts, against which glass coating is not resistant. In case of phosporic acid the maximum allowed concentration is 80 % and permissible temperature limit is 120°C. For alkalies the applicable maximum temperature strongly depends on the actual pH-value, for example at
pH 9 the maximum temperature is 135°C but at pH 14 the temperature is limited to 65°C.