Otovent Dive Equalisation aid for divers

Otovent Dive Equalisation aid for divers Descending in water exerts greater pressure on your body’s air spaces than it would outside of water (eg. When using a lift or stairs). This is because water is denser than air, a theory is known as Boyle’s Law. To protect your ears when diving you must counter the pressure. The most popular means of achieving this is the Valsalva Manoeuvre, the act of exhaling against a closed airway. This process is known as equalizing. Equalising contributes air volume to the ear’s air spaces so that they can approximate the ambient pressure outside of your body. Failure to equalize allows the gas volume of air spaces to decrease causing them to be squeezed. This is what is meant by the scuba diving term ‘ear squeeze’. You should equalize every 2 – 3 ft (1m) and it is especially important in the first 5 – 10 meters of the dive as this is when the largest proportional pressure change occurs. #Equalisation #negativepressure