These Reagent Bottles are made from the same laboratory borosilicate as Erlenmeyer Flasks. No silicone o-ring required.
These 1000ml Regent Bottles are ideal for the boiling and storage of wort for your starter, or transporting yeast from yeast starters.
Simply place in microwave to sterilise wort then cap and put in fridge until you need to make your starter.
The whole bottle can be autoclaved.