This material is a lanolin-based fluid with anti-rust and dewatering additives. It is intended to give protection under severe conditions. It gives protection outdoors of between 3 and 4 months, and an indoor protection of 8 to10 months.
The De-wartering Fluid No 1 has a speed of de-watering of 10 - 12 seconds, which is exceptionally fast for a fluid of this type. It is easily removed by wiping with a rag soaked in paraffin or spirit. The drying time of this fluid is between 1½ - 2½ hours.