Yields 10 Gallons of ready-to-use solution. A superlative holding fluid with safe, yet powerful fungicide properties. 90% Propylene Glycol, 9% Ethylene Glycol Phenyl Ether, and 1% Diethylene Glycol Phenyl Ether. Mix with water. In addition, this solution is an effective humectant. Using this holding solution ensures that your specimens stay moist, flexible, and mold-free.