Trinity Candle Factory Premium Scented Eucalyptus - Effusion Lamp Oil - 8 oz. Catalytic Lamp / Effusion Oil is for your Lampe Berger, Redolere, La Tee Da, or Stone Wick Lamps. Truly a great product. Trinity Candle Factory's catalytic lamp oil is great for any stone wick lamp assembly. This candle smells like fresh cut eucalyptus. An medicinal herbaceous aromatherapy candle. One of our very best sellers and great for the holidays. 100% Satisfaction Guarantee.