HB Instrument Company Specific Gravity Plain Form Hydrometers. The exception is the Clear SG which is an inline hydrometer of the cylindrical type. All others are of the Uranium type. The exception is the Uranium hydrometer of the Mixed Precipitation type. All others are of the Uranium type. The exception is the Mixed Precipitation hydrometer of the round bottom type. These have a slightly spherical shape with a smooth base. The exception is the U-shaped hydrometer which has a slightly oblong shape with a slightly oblong top. These have a slightly bending radius. The exception is the Clear SG Hydrometer of the round bottom type. These have a slightly bending radius. Specifications for HB Instrument Company Specific Gravity Plain Form Hydrometers 50500 : Range Spec. Gravity: 0.790 to 0.900 Unit: Each (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine HB Instrument Company products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Labware & Accessories with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for HB Instrument Company Labware & Accessories. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the HB Instrument Company Specific Gravity Plain Form Hydrometers 50500/ 34625-633 we carry a full complement of Labware & Accessories as well as other product offerings from HB Instrument Company. We also carry a full line of HB Instrument Company accessories to help meet your laboratory and scientific needs. For a complete selection of HB Instrument Company Labware & Accessories please visit our HB Instrument Company page. For more brand name Labware & Accessories please visit our Labware & Accessories store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. HB Instrument Company Specific Gravity Plain Form Hydrometers 50500