Sterilised Concentrated Solution The black faux leather cardboard case has a push-fit lid. When removed, it reveals a sealed ampoule made of amber glass. The label, written in brown ink, reads: "Sterilised Concentrated Solution of Pure Dextrose B.D.H. 50 per cent. The contents of this ampoule (2 fl. oz.) diluted to one pint with Sterilised Water produces a 5 per cent. solution of Dextrose isotonic with blood serum. THIS SOLUTION IS BUFFERED WITH 0.25% SODIUM CITRATE. Manufactured in England by THE BRITISH DRUG HOUSE, LTD. LONDON A 257" This solution is typically used in medical settings to provide a source of glucose for patients, helping to restore blood sugar levels and maintain isotonic conditions with blood serum. 1900-1949