rheometers - Robuta Search

https://www.nist.gov/publications/comparison-concrete-rheometersinternational-test-lcpc-nantes-france-october-2000

https://www.nist.gov/publications/reference-materials-rheometers-and-flow-table

Oil is the most used standard material for the calibration of rheometers.

https://www.analitika.com.tr/en/products/rheometers/