H-b b61809-0000 durac 0/100% salt brine % by saturation hydrometer, 1/pack used for measuring sodium chloride saturation of salt brines in various industries including food, fishing, and transportation. Choose from two models with ranges from 0 to 100% or 0 to 26.5%. At 300mm 12 long, these plain form hydrometers are made of lead free ballast and glass. Each is individually serialized and has a temperature standardization of 60f 15c. durac salt brine hydrometers are hand inspected by our u.s. Quality team in our exclusive triple accredited/registered iso/iec 17025:2005 and a2la accredited calibration laboratory; internationally recognized and accepted by the signatory economies of the ilac /mra and located in our iso 14001:2004 environmental management system registered facility. They are packaged with a multi-language english, french, german, italian, portuguese, and spanish statement of accuracy indicating accuracy traceable to nist. note: salt brine hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures.