Sahli Haemoglobinometer
@MAY
Haemoglobinometer pipette made by Hawksley in the 1930s to estimate blood haemoglobin level for medical screening. A fixed amount of blood would be mixed with dilute hydrochloric acid and water in order to match a standard colour. The volume of fluid added would be proportional to the patient's haemoglobin level. On the pipette it is printed '100%-14 grams Hb. per 100c.c. 5 min.'
The Sahli Haemoglobinometer was named after Dr. Sahli who had made improvements to the sphygmomanometer and changed the name. The whole kit, which doctors would have carried in their bags, would have included a pipette, dropper, solution, and colour reference. While today the process can be easily done in seconds, this device is still used in some areas without advanced medicine.
Patent 549919
