Globally accepted viscosity testing with ASTM D7042

Across the petroleum industry, compliance with international standards is essential for product release, trade, and regulatory acceptance. Whether testing fuels, lubricants, base oils, or alternative energy carriers, laboratories must ensure that viscosity and density measurements align with globally recognised specifications.

ASTM D7042 has become firmly established as an accepted alternative to ASTM D445 in major petroleum specifications worldwide. As an increasing number of standards explicitly reference the method, laboratories require instrumentation that ensures reliable and fully compliant implementation.

Anton Paar’s SVM series viscometers measure viscosity in accordance with ASTM D7042 and, depending on the model, density in accordance with ASTM D4052. Covering a viscosity range of 0.2 mm²/s to 30,000 mm²/s and temperatures from 

-60 °C to +135 °C, the series enables testing across the full product spectrum defined in international standards – from light distillates to high-viscous waxes – with density measurement supporting specifications requiring simultaneous verification of both parameters.

ASTM D7042 is referenced across key fuel specifications, including ASTM D975 and EN 590 for diesel fuels, ASTM D396 for fuel oils, ASTM D3699 for kerosene, and ASTM D1655 and D7566 for aviation turbine fuels and sustainable aviation fuels.

In the lubricant sector, the method is referenced in SAE J300 for engine oils, SAE J306 for gear oils, and ASTM D6074 for base oil characterisation. It is also acknowledged in ISO standards and international aviation specifications such as JIG AFQRJOS and Def Stan 91-091.

To support harmonised reporting, ASTM-established bias correction equations between D7042 and D445 are implemented directly within the SVM instruments. Where required, results can be automatically bias-corrected to be practically equivalent to D445 values, ensuring compatibility with legacy documentation and specification limits.

With compliance with more than 50 international standards, robust metal measuring cells, integrated Peltier temperature control, and sample volumes as low as 1.5 mL, the SVM series delivers specification-ready results with efficiency and operational reliability.