Back to resources 6 June 2021 Industry information

The Importance of Droplet Size

What The Hurricane ES Droplet Size Testing Data Tells Us

When fogging for hygiene purposes, the droplet size of the cleaning agent distributed by an electrostatic fogger is important because it can impact the effectiveness of the electrostatic fogging. Depending on the distance from surfaces at which an electrostatic fogger is being used, different droplet sizes can have higher or lower levels of efficacy.

Very small droplet sizes evaporate quickly. This can be a benefit as it means that surfaces cleaned through electrostatic fogging dry quickly and are not out of use for long periods of time. However, the quick evaporation time also means that smaller droplets are less likely to reach surfaces that are further away from the electrostatic fogger’s release point.

Larger droplet sizes do not evaporate as quickly and can reach surfaces at a greater distance from the release point. However, larger droplet sizes can result in pooling, with too much cleaning agent being dispersed during the electrostatic fogging process and surfaces becoming oversaturated. If this happens, the cleaning process becomes less economical and efficient.

The Hurricane ES is an electrostatic fogger, which means that the dispersed droplets are given a positive charge. This means that the droplets repel each other to reduce the risk of pooling and can cover a larger surface area. In turn, this makes the product more effective and efficient, reducing the time required to thoroughly clean an area.

While the Hurricane ES’s electrostatic functionality helps enhance the distribution of droplets in the cleaning process, we have also conducted tests to measure the droplet sizes achieved when using the product.

Our tests show that, when fogging with a flow rate of 120ml/min with droplets measured at a 100cm distance from the Hurricane ES’s distribution point, the majority of the droplets are within the 40-70 micron range. This means that, when fogging at this range, the majority of droplets are small enough to evaporate from the surface quickly – reducing the time these surfaces take to dry.

When operated at a flow rate of 120ml/min and measured at a 200cm distance from the Hurricane ES, our data shows that the majority of droplets fall between the 40-100 micron range. This expanded range shows that, due to the greater distance, a larger share of the droplets reaching the surface are slightly larger. These are the droplets that have not evaporated while travelling the 200cm distance required to reach the surface

These results show that the Hurricane ES produces droplet sizes that are ideally suited for cleaning surfaces at both a 100cm and 200cm distance. In practise, this means that electrostatic fogging with the Hurricane ES allows operatives to clean surfaces thoroughly at speed, while also ensuring that further away and hard-to-reach areas are cleaned effectively when using the product.