“Citric Acid 100G” has been added to your basket. View basket Rubber Bung 1G (Bored) £1.50 166 in stock Rubber Bung 1G (Bored) quantity Add to basket Summary Specs Description Rubber bung with hole to take airlock. Suitable for use with demi john. Related products AccessoriesTartaric Acid 50G £2.75 7 in stockAdd to basket AccessoriesHydrometer £5.40 14 in stockAdd to basket AccessoriesYoungs Campden Tablets Tub £4.30 30 in stockAdd to basket