Standard mark proppar

The white, octagonal LABSOLUTE® stoppers are made of HDPE and comply with DIN 12254. They are the perfect complement to all laboratory glassware with a standard ground joint. The joint sizes 34/35, 45/40 and 60/46 are in addition to the standard....

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....

Acc. to DIN 12252, form C....

Manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. They meet the highest quality standards according to DIN 12252. Lower closed end of stopper features a "drip-tip" to ensure adhered liquid is returned to the flask. Hexagonal flat head prevents the stopper from rolling and allows stopper to be stood on end preventing contamination of the ground surface....

Fits standard conical joints....

Stoppers manufactured to DIN standard 12242 ensuring an effective seal, even on non-standard surfaces....

DIN 12252. Solid or semi-hollow, with octagonal grip....

DIN 12252. With octagonal grip....

Plastic stopper with NS 19, PPC, for Karlsruher BOD bottle...

DIN 12252. With octagonal grip....