Hydrometer Kits: Hydrometer test kits and replacement bulbs. Qty Description Price Purchase Hydrometer Kits - Gas and Methanol Each $265 Hydrometer Kits - Methanol and Nitro Each $265 Replacement Hydrometer Bulb - Gas & Methanol (.700 - .810) $44.55 Replacement Hydrometer Bulb - Methanol & Nitro (0% - 60%) $44.55 Replacement Hydrometer Bulb - Methanol & Nitro (60-100%) $44.55 Replacement Hydrometer Bulb - Gasoline (.640 - .710) $45.8     Copyright © 2004 VP Racing Fuels, Inc. / Contact: webmaster@vpracingfuels.com