Lab instruments for oil and gas. Made in Germany.

Calibration fluids and standards

According to ISO 9001, measuring devices which are used in the production and quality processes have to be inspected

  • periodically at regular intervals
  • with nationally traceable standards

The inspection intervals, criteria and admitted tolerances are defined in the quality handbook of the company using the instrument.

Test fluid made of mineral oil (type E-***, 100/500 ml)
Order-No.TypeDescriptionη (20 °C)
H-082-5042E7Test fluid, EU-MSDS, 100 ml5 mPas
H-082-5043E200Test fluid, EU-MSDS, 100 ml120 mPas
H-082-5044E2000Test fluid, EU-MSDS, 100 ml1.900 mPas
H-082-5046E6000Test fluid, EU-MSDS, 100 ml6.000 mPas
H-082-5336E15000Test fluid, EU-MSDS, 100 ml15.000 mPas
H-082-5335E40000Prüfflüssigkeit, EU-MSDS, 100 ml40.000 mPas
H-082-5412E33Test fluid, EU-MSDS, 500 ml33 mPas
H-082-5411E330Test fluid, EU-MSDS, 500 ml330 mPas
H-082-5410E1300Test fluid, EU-MSDS, 500 ml1.300 mPas
Test fluid made of silicone oil (type S-***, 500 ml)
Order-No.TypeDescriptionη (25 °C)
H-082-5373S100Test fluid (silicone oil), EU-MSDS, 500 ml~ 100 mPas (25 °C)
H-082-5374S1000Test fluid (silicone oil), EU-MSDS, 500 ml~ 1.000 mPas (25 °C)
H-082-5375S5000Test fluid (silicone oil), EU-MSDS, 500 ml~ 5.000 mPas (25 °C)
H-082-5376S10000Test fluid (silicone oil), EU-MSDS, 500 ml~ 10.000 mPas (25 °C)
H-082-5377S30000Test fluid (silicone oil), EU-MSDS, 500 ml~ 30.000 mPas (25 °C)
Viscosity standards with DKD certificate (100 ml)
Order-No.TypeDescriptionη (20 °C)
H-082-5303100BWStandard fluid, DKD certificate, 100 ml100 mPas *)
H-082-54042000AWStandard fluid, DKD certificate, 100 ml2.000 mPas *)
H-082-530510000BWStandard fluid, DKD certificate, 100 ml10.000 mPas *)
H-799-305450000BWStandard fluid, DKD certificate, 100 ml50.000 mPas *)
H-799-3037100000AWStandard fluid, DKD certificate, 100 ml100.000 mPas *)
H-799-3038100000BWStandard fluid, DKD certificate, 100 ml100.000 mPas *)
*): Viscosity values for further temperatures: 23, 25, 30, 40 and 100 °C

Type of standardDynamic viscosity η in mPas (reference values))
20 °C23 °C25 °C30 °C40 °C100 °C
100BW 13011020080528,4
2000AW 1,5001,3001,10082046045
10000BW 15,00011,3009,4006,0002,70091
50000BW 60,00045,00037,00024,00010,000270
100000AW 90,00067,00056,00035,00015,000380
100000BW 130,00095,00079,00050,00021,000530


Request Now!

>> For the user of a rheometer a practical and inexpensive approach to check its precision is to measure a Newtonian fluid with defined viscosity, a socalled test liquid. [...] They are mineral or synthetic oils whose viscosity was determined with high accuracy at one or several temperatures. The viscosity, its accuracy, the measurement temperature (normally 20°C or 25°C) and the expiry date of the test liquid are marked on the attached certificate. It is recommended to use test liquids with a viscosity similar to the one of the samples usually measured.
Impurities lead to premature ageing of the test liquids, which generally becomes obvious via a slight increase in viscosity. For this reason, any test liquid used once may not be returned into the original container. Moreover, they should be kept in a cool, dark place. However, ageing of test liquids cannot be entirely prevented. Despite proper storage, experience shows that the viscosity increases by 1 % after 8 months. Taking into account the time between measuring the oils viscosity and delivery, the customer can rely on the certified values for at least 6 months.
For testing viscotesters, silicon oils are also used since they exhibit a lower temperature dependence of their viscosity and many viscosity testers are not provided with temperature control. When using silicone oils it has to be taken into account that silicones with  higher molecular weights exhibit a shearthinning effect at higher shear rates; i.e. the viscosity decreases from a specific shear rate on. Moreover, there are areas of application, such as foods, pharmaceutical products or paints, in which silicone oils may not be used at all. Depending on the result of the test-oil measurement, one decides whether the initially measured viscosity values are correct and whether the measuring method or the rheometer must be checked. That is the reason why the measuring process must be carried out with the greatest possible care.

From: Application note V-218 "Test liquids", Dr. Klaus Oldörp, Thermo Fisher Scientific, Process Instruments, Karlsruhe, Germany
Accentuation: PSL Systemtechnik