When mounted in your uke’s soundhole, the USA-made Oasis OH18 Ukulele Humidifier protects your instrument against hairline cracks that might result from drying out. What sets the OH18 apart from many other soundhole-mounted humidifiers is its elegant anti-leakage design. Soundhole humidifiers that use foam or sponge to hold water may provide adequate defense against dry environments, but fail to protect the instruments from potential leakage from the humidifiers themselves. The Oasis OH18 prevents water leaking into your uke in two ways:
To further protect your instrument, the Oasis OH18 is made from soft materials so it will NOT damage your strings or dent or scratch your uke.
As water vapor is dispensed from the OH18, the humidifier shrinks, making it easy to tell when it needs a refill. The included 10cc syringe makes filling the humidifier a snap. Because the minerals contained in tap or bottled water may clog the liner, distilled water is recommended to extend the life of the humidifier.
The Oasis OH18 humidifier is suitable for moderately dry environments with humidity levels between 25% and 40%. In conditions above 40% humidity, you should NOT use a humidifier. Typically, humidity drops in the fall and rises in the spring, so you may not need to humidify your uke all year round. It’s best to use hygrometers to determine the exact humidity levels both inside and outside your ukulele case or bag.