Have the refreshing taste of grapefruit any time with the Diet Pink Grapefruit Soda Mix from SodaStream. This 500 ml bottle of soda syrup makes 12 liters of delicious, sparkling pink grapefruit soda. Made for use with a Sodastream, sold separately. Sodastream is a cost-effective and environmentally friendly way to create sparkling drinks, sodas and other beverages.