WATER-SAVING RESEARCH: THE ULTIMATE POWER SHOWER HEAD
The concept of the shower lab is very simple. “Our test procedure goes like this,” Bensing explains. “We install the shower head. We make the hair wet, and then shampoo it. Next we rinse, change the head or spray type, shampoo the hair again and rinse it out. Finally, we compare the results.”
The flow rate is reviewed, as well as the time it takes for the water to run clear. One series of tests, for example, involves measuring how fast shampoo is rinsed out at different temperatures. The temperature is the only thing that changes during this experiment, while the spray type and water flow remain the same. With only a single variable, Bensing and her team are able to decipher exactly where differences in their results are rooted.
One small piece of plastic plays an important role in these tests: the flow regulator. It is built into the majority of GROHE power shower head models and is indispensable in many territories. One example would be the US market, where water consumption is strictly controlled. A water flow regulator ensures that the same amount of water is always flowing from the spray plate, regardless of the water pressure in the pipe. Considerations such as these are at the heart of Bensing's quest to create a shower head for low water pressure contexts.