Test kit provides immediate, unambiguous indicators of fuel quality without the need for technical expertise. Simple test is ideal for anyone who uses biodiesel fuel in their commercial or personal vehicles, giving immediate feedback on whether a fuel meets basic criteria for use. U.S.A. Compatible With: Bio-diesel, Total Glycerin Test: Yes, Biodiesel Style: B100 and Bio-diesel Blends, Test Qty.: 6, Test Length (min.): 5 Detects total glycerin (a by-product of biodiesel production) in biodiesel fuel Results given for 6 levels, ranging from 0.05 to 0.5 (% total glycerin in mass) Ideal test kit for producers or fuel diagnosis