The water in bitumen emulsion test are used in order to measure water content in bituminous emulsions. This testing method involves the use of distillation with water-immiscible volatile solvent to determine the amount of water in petroleum products as well as in bituminous materials. Understanding the water content in the bitumen emulsions as they ensure the quality and performance of the asphalt mixture.

The water in the bitumen emulsion apparatus consists of high-quality components that enhance their operation. It consists of a 500 ml glass balloon which is the principal distillation flask. It also includes a 25 ml glass receiver capacity containing 0.10 ml graduation so as to be able to measure accurately the distilled water towards the preparation of this solution. The glass reflux condenser helps in condensation and ensure all the devices will function properly during the experiments.

The water used in the bitumen emulsion apparatus also has an electric heater that has a thermoregulator to maintain the constant temperature particularly during the distillation process. This feature is useful for controlling the temperature which is critical in ensuring accurate results are obtained.

The first step involves distilling the sample in a way that water is separated from the bitumen emulsion. The distillation process is made more efficient by using a water-immiscible solvent, and results is clean, distinct, and accurate. It therefore enables the user to be able to quantify the exact amounts of water present in the emulsion by simply reading the volume of the water collected in the receiver.