Calibration Standards for Flow Cups

Viscosity Standards are necessary for checking the entire procedure used in viscometric measurements including timing, temperature control, cleaning as well as the characteristics of the individual cups.

Viscosity Standard Kinetic Viscosity Centistokes Zahn Cup Shell Cup Ford Cup ISO Cup Din Cup
Size Drain Time (secs) Size Drain Time (secs) Size Drain Time (secs) Size Drain Time (secs) Size Drain Time (secs)
C6 8.9 1 52 3 34
C10 17 1 45 2 35 2 35 3 48
C20 34 1 60 2 64 2 44 3 82
2.5 40
C35 66 2 33 2.5 74 2 63 4 53
3 46 3 35
3.5 32
C60 120 2 48 3.5 57 3 58 4 89 4 30
4 36 4 36
C100 230 3 27 4 68 4 64 6 34 52
5 36
C200 460 3 47 5 72 6 67 102
4 36 6 29
C350 850 4 62 6 53
5 37
C600 1600 5 70