This kit gives you a low cost easy way to detect "Hydrocarbon Utilizing Micro-Organisms" (commonly called hum bugs) in all hydrocarbon fuels. These "bugs" are the villians that cause the serious hazards associated with fungal growth. Used properly, the HUM-Bug Detector Kit will detect the fungal growth in its earliest stages. The kit consists of a sterile hypodermic sampling syringe and a bottle containing a hydrocarbon fuel, a nutrient and a dye indicator. A fuel or water sample taken from the fuel in question is injected through the sealed rubber cap into the solution in the test bottle. If the fuel sample is contaminated with hum bugs, the solution in the test bottle will turn pink to red in as little as 24 hours. Extremely mild contamination may take as long as five days to detect. If the sample is free of these micro-organisms, the fluid in the test bottle will remain clear. Detailed instructions are enclosed in each kit.