"The Standard for Total Biomass Measurement In Metalworking Fluids" is provided by the LumiCast publication of LuminUltra.  Biological contamination is the lifeline on the palm of every metalworking fluid system.  There is a well-established need for faster and more accurate detection of the MWF condition.

"The first step in the control of microbial contamination is the detection/quantification of the contaminant. Dip slides and pour plates have typically been used for microbial detection but both methods require 24-48 hours for results to be gathered. The resulting delay in action may allow for undue wear on manufacturing equipment and the establishment of biofilm within the fluid delivery system." 

LuminUltra states that it's Quench-Gone Organic Modified (QGO-M) test protocol uses a significantly more advanced and robust reagent system than conventional ATP test methods to quickly separate microbes from oil in mwf samples.