Brandberg

Brandberg is a method that is used to determine the amount of protein in urine. This method was developed in the 19th century and is still used in medicine today. It is based on the fact that when nitric acid is added to urine, the protein forms a ring at the boundary of the two layers. If the amount of protein in the urine exceeds a certain level, the ring will be visible after 2-3 minutes. This method is very accurate and fast, and can help the doctor diagnose various kidney and bladder diseases.