Liquid Density Standards
Certified Reference Materials for Liquid Density
We produce Liquid Density Standards which are calibrated under our ISO 17025 accreditation. These are supplied in sealed glass ampoules which hold around 10ml, and come complete with their calibration certificates. These Certified Reference Materials (CRMs) are linked to recognised national standards of mass, pressure and temperature, and provide an effective route to traceable calibration for all types of laboratory density meter.
We produce a range of standards to meet the requirements of a wide variety of industries and applications. We can supply Materials Safety Data Sheets (MSDS) data for each type of liquid used.
The calibration certificate supplied with each ampoule shows the densities determined by hydrostatic weighing for that particular batch of liquid. Some liquids are only calibrated at 20°C, others over a wide range of temperatures. We only supply liquids which have passed through the hydrostatic weighing system, thus ensuring that the standards are of the highest quality.
Our Range of Standards
The following CRMs for Liquid Density are normally available from stock – see ordering information for more details.
| Liquid | Density at 20°C (kg/m3) | Temperature Range (°C) | Uncertainty (kg/m3) |
| 2,2,4 trimethylpentane | 692 | 15-25 | ±0.01 |
| Dodecane | 749 | 10-50 | ±0.01 |
| Lube oil Largo ~8 mPa·s @40°C | 824 | 10-50 | ±0.01 |
| Lube oil Largo ~32 mPa·s @40°C | 867 | 10-50 | ±0.01 |
| Base lube oil ~110mPa·s @40°C | 882 | 10-50 | ±0.03 |
| Lube oil A90 ~160mPa·s @40°C | 887 | 10-50 | ±0.01 |
| Ethanol in water ~40% ABV | 948 | 20 | ±0.03 |
| Ethanol in water ~9% ABV | 985 | 20 | ±0.03 |
| Water | 998 | 20 | ±0.015 |
| Dextrose in water ~10% w/w | 1037 | 20 | ±0.03 |
| Dimethylphthalate ~17mPa·s @20°C | 1191 | 15-25 | ±0.02 |
| Sodium bromide in water ~27% w/w | 1245 | 15-25 | ±0.03 |
| Caesium chloride ~47% w/w | 1525 | 15-25 | ±0.03 |
| Tetrachloroethylene | 1623 | 10-50 | ±0.015 |
Standards Coming Soon
A new oil density standard will be going into production shortly.
| Liquid | Nominal Density at 20°C (kg/m3) |
| Lube oil Largo 22 | 899 |