We are not the only one, but we are the only manufacturer that is selling a model created by our staff back in 1992! Another major flow meter manufacturer had one on the market, but removed it after only 2 years. Why? Calculating a volumetric flow under perfect conditions is very easy, but 99% of the lift stations do not operate under these conditions all the time. Maid Labs’ staff invested over 20 years on improving their “what if” functions, in order to compensate for possible abnormal behaviors. It simply takes too much time and investment to create an accurate volumetric flow meter.