Aphrometer - manometer for flaske 0-4 bar - BacBrewingAphrometer manometer for flaske 0 4 bar Aphrometer or as it is best known, pressure gauge bottle crown 26 or 29 mm With the aphrometer it is possible to monitor the internal pressure of the bottle during the maturation fermentation phase of beer, wine, cider, kombucha, mead. Simple use, intended for use with 26 or 29mm crown cap bottles. Using a normal mechanical capping machine once the bottle has been plugged using the equipped crown plugs (not