Certified Reference Materials for Liquid Density

 The following liquid density CRMs, produced on a UKAS accredited hydrostatic weighing system, are normally available ex stock:

kgm-3 at 20°C Range   2,2,4-trimethylpentane 692 15 - 25°C   dodecane 750 10 - 50°C   base lube oil ~8 mPas @ 40°C 867 15 - 50°C   base lube oil ~30 mPa s @ 40°C 871 15 - 50°C   base lube oil ~110 mPa s @ 40°C 881 15 - 50°C   lube oil A90 ~160 mPa s @ 40°C 887 15 - 50°C   ethanol in water ~ 41% ABV 947 20°C†   ethanol in water ~ 11% ABV 984 20°C†   dextrose in water ~ 10% w/w 1036 20°C†   dimethylphthalate ~17 mPa s @ 20°C 1191 15 - 25°C   sodium bromide in water ~ 30% w/w 1206 15 - 25°C†   tetrachloroethylene 1623 10 - 50°C

 Most standards have an uncertainty of ± 0.01 kgm^-3 over the stated temperature range.
Ethanol, dextrose, and sodium bromide solutions have an uncertainty of ± 0.03 kgm^-3.

 Only liquid which has passed through the hydrostatic weighing rig is sold.

 Standards are sold in 10 ml sealed glass ampoules.

The displayed density on many density meters is affected by the viscosity of the liquid. If you are measuring viscous liquids, you should consider calibrating your meter with a CRM of similar viscosity.

^†We do not recommend the use of aqueous standards unless they are required by the fiscal authorities.

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