It is extremely important to regularly test for fuel contamination, especially for mission critical facilities that manage large volumes of fuel for backup power purposes. Fuel needs to be treated as the critical component that it is to prevent any unnecessary downtime.
Bringing fuel back to ISO 4406 specification does not mean that it will remain that way long-term. Fuel often falls out of specification through natural degradation, microbial growth, and the introduction of new contaminants through the transferring and filling of new fuel loads.
Become proactive with sampling and testing to avoid larger cascading problems from fuel degradation and contamination, protecting the operability and reliability of your facilities and/or equipment that relies on it.