| The Skygeeks are on a mission to provide you with absolutely every aviation related item you will need to operate your aircraft safely. That of course includes checking your 100LL aircraft fuel for contaminates with a fuel sump tester. Sumping your planes fuel is not a "good practice" but a mandatory requirement to ensure you do not have water or FOD in your AvGas or Jet A. In this section of the SkyGeek pilot shop, we list various brands and types of aviation fuel "Tommy Cups". We stock the environmentally friendly 12 Oz. Gats Jar and the 16 Oz. Gats Fuel Tester most commonly used by larger Corporate jets. It doesn't matter if you are a fan of ASA or Jeppesen brands SkyGeek will keep your engine humming rather than burping from a bad load of fuel. If you have any additional questions, we encourage you to check out our knowledgeable Help Center. | 
