ไฮรโดรมิเตอร์ ASTM Hydrometer 151 H , 152 H

ไฮรโดรมิเตอร์ ASTM Hydrometer
- ASTM Hydrometer 151 H is graduated to read specific gravity, with a range of 0.995-  1.038
- ASTM Hydrometer 152 H measures in grams per liter (g/L) of suspension and has a range of -5 - +60 g/L