Scope and Contents Used for measuring Blood Sugar levels. This simple but effective method for measuring a colour based chemical analysis was developed by a Pharmacist in Salisbury, Wiltshire, and initially marketed by a local company there. The chemical reaction in a test tube is quanitated by comparison with a graded series of coloured glass standards chosen for the particular test in progress. Various tests became more reliable and useful in the care of patients with diabetes, renal disease and liver...