Available in a variety of models measuring baume of syrups and other liquids heavier than water in various ranges from 0 to 70, these plain form hydrometers are used in the chemistry, pharmacology, food and beverage, starch industries and more. 300mm 12 long lead free ballast and glass individually serialized temperature standardization: 60°f 15°c hand inspected by our u.s. Quality team packaged with a multi-language english, french, german, italian, portuguese, and spanish statement of accuracy indicating accuracy traceable to nist note : hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures.