1.1 Hustoměr
| DIN 12790, ISO 387 | Hydrometer; general instructions |
| DIN 12791 | Part I: Density hydrometers; construction, adjustment and use |
| Part II: Density hydrometers; standardized sizes, designation | |
| Part III: Use and test | |
| ISO 649-2 | Laboratory glassware: Density hydrometers for general purpose |
| NF T 20-050 | Chemical products for industrial use – Determination of density of liquids – Areometric method |
| DIN 12793 | Laboratory glassware: range find hydrometers |