How chemically resistant is laboratory borosilicate glassware (DURAN®)?
Glass is the most universal material in terms of chemical resistance when compared with other materials. DURAN® borosilicate glass 3.3 is highly resistant to water, acids, saline solutions, organic substances and also halogens such as chlorine and bromine. Its resistance to bases is also relatively good. Only hydrofluoric acid, concentrated phosphoric acid and strong bases cause appreciable surface removal of the glass (glass corrosion) at high temperatures (>+100 °C). In detail: Water resistance: DURAN® corresponds to Class 1 of the glasses that are divided into a total of 5 water resistance classes in accordance with ISO 719 (98 °C). Due to its good water resistance, DURAN® meets the requirements of the USP and EP for a neutral glass or corresponds to glass type 1 and can be used in an almost unrestricted way in pharmaceutical applications and in contact with foodstuffs. Acid resistance: DURAN® corresponds to Class 1 of the glasses divided into 4 acid classes in accordance with DIN 1
