The FD – HYBRID kit is the FD – 1 + the FD – BUG kits combined together.
Test kits contain no fluids, no gels, no hazardous or toxic materials.
Test kits provide excellent general quality testing results, they are not a direct replacement for a laboratory test that can provide a complete quantitative and numerical analysis. Kits are first step fuel checks to get base line indicators to diagnose if your fuel has problems without expensive laboratory tests.