VWR Hydrometer Alc Prf 145-165

VWR Hydrometer Alc Prf 145-165. The ball valves allow accurate measurement of a liquid at a specific percent as determined by the refraction index (RV). The hydrometers are supplied without ball valves for measuring a liquid at a specific percent as measured by the RV. The preferred hydrometer for laboratory use should be changed every four to six hours depending on the reagent being used. Replacement ball valves are easily obtained from your VWR Hydrometer accessory bin. Specifications for VWR