Liquid Density Standards

What is a density standard?

Liquid Density Standards

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 liquid density standards 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.

Liquid density standard and Zerodur sphere

We produce a range of standards to meet the requirements of a wide variety of industries and applications. We supply Safety Data Sheets (SDS) data on this website for each type of liquid used and we also provide guidance notes on how to use liquid density standards.

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 liquid density standards are normally available from stock – see ordering information for more details.

Liquid	Nominal Density at 20°C (kg/m³)	Temperature Range (°C)	Uncertainty (kg/m³)
2,2,4 trimethylpentane	692	15-25	±0.010
Dodecane	749	10-50	±0.010
Lube ~8 mPa·s @40°C	826	10-50	±0.010
Lube ~32 mPa·s @40°C	867	10-50	±0.005
Lube ~100 mPa·s @40°C	878	15-50	±0.010
Lube ~460 mPa·s @40°C	898	10-50	±0.010
Ethanol in water ~40% ABV	948	20	±0.020
Ethanol in water ~9% ABV	986	20	±0.025
Certified Water	998	10-50	±0.010
Dextrose in water ~10% w/w	1037	20	±0.020
2,4-Dichlorotoluene	1249	10-50	±0.020
Sodium Bromide in water ~27%	1261	15-25	±0.020
Caesium Chloride in water ~ 48%	1558	15-25	±0.020
Tetrachloroethylene	1623	10-50	±0.010

For an example certificate please click here.