Hollow glass stoppers, type C, borosilicate glass 3.3
![A click opens this product segment](/lab/shop/pic/150x150/owweb/7691091-7691096.jpg;jsessionid=32ABB503694D41819901EA18BBE422E8)
The hexagonal LABSOLUTE® hollow glass stoppers with standard ground joint and pointed bottom are made of high-quality borosilicate glass 3.3 and are therefore extremely temperature-resistant up to 500 °C. The stoppers comply with DIN 12252 form C. They are resistant to cold lyes/alkaline solutions and strong acids with the exception of hydrofluoric acid and concentrated, hot phosphoric acid. The stoppers can be easily combined with all glass products that have a ground joint such as measuring flasks, Erlenmeyer flasks or round bottom flasks....
Volumetric flasks, class A, with hollow glass stopper, blue graduation
![A click opens this product segment](/lab/shop/pic/150x150/owweb/7691100-7691110_1.jpg;jsessionid=32ABB503694D41819901EA18BBE422E8)
All LABSOLUTE® clear and amber volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. A batch-specific certificate of conformity can be supplied on request....
Volumetric flasks, class A, with PE stopper, blue graduation
![A click opens this product segment](/lab/shop/pic/150x150/owweb/7691028.jpg;jsessionid=32ABB503694D41819901EA18BBE422E8)
All LABSOLUTE® clear and amber volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. A batch-specific certificate of conformity can be supplied on request....
Volumetric flasks, trapezoidal, class A, with PE stopper, blue graduation
![A click opens this product segment](/lab/shop/pic/150x150/owweb/7691130-7691136_1.jpg;jsessionid=32ABB503694D41819901EA18BBE422E8)
All LABSOLUTE® clear and amber volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. A batch-specific certificate of conformity can be supplied on request....
Volumetric flasks, amber, class A, with PE stopper, white graduation
![A click opens this product segment](/lab/shop/pic/150x150/owweb/7691070-7691080.jpg;jsessionid=32ABB503694D41819901EA18BBE422E8)
All LABSOLUTE® clear and amber volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. A batch-specific certificate of conformity can be supplied on request....