Measuring ranges:
The refractive index, nD from 1.3750 to 1.4907
Fuel dispersions, nf - nc from 0.0068 to 0.0160
Shares of aromatics,% 0 - 60
Octane number, ed. 70 - 110

Acceptable measurement errors:
Refractive index, σnD, not more than ± 1х0,0001
Fuel dispersions, σ (nf - nc) ± 2х0.0001
Shares of aromatics,% ± 1
Octane number, units, no more than ± 2