These plain form hydrometers are available in a variety of models measuring the relative densities (specific gravity) of oil and petroleum products in various ranges from -1° to 101°API in accordance with the American Petroleum Institute (API) and the American Society of Testing Materials…

Graduated in American Petroleum Institute scale in accordance with ASTM Hydrometer Standards E-100; API standard 526 As required for ASTM Standard D 287 Federal Test Method Standard No. 791, method 401.4; ANSI Z11.31; and API Standard 526 Maximum total length 335 mm, maximum length of…