Zenith Solutions Jewellery Cleaner Non-Ammoniated 249NA Jewellery Cleaner NA is water based, non-ammoniated and has excellent cleaning power. Ideal for cleaning jewellery with precious, or semi-precious stones. Rated environmentally friendly and safe to use because it does not emit any harmful fumes. Can be used in ultrasonic or mechanical cleaning machines or for simple manual cleaning. One gallon makes 8 gallons. Rinse with water and dry.