1.Refer to the attached table (Column Ia) for Hagenbach correction factor (y).Steadily apply vacuum to capillary tube by pulling the syringe piston.This will cause successive filling of the reference level vessel (5), the capillary tube (1), the measuring sphere (8), and the pre-run sphere (9).Liquid column will separate at the lower end of the capillary (7) and form suspended level at the dome-shaped top part (6).Transfer 15 ml of test sample to the Viscometer through filling tube (3) into reservoir (4).Connect a syringe to the capillary tube (1).Close the venting tube (2) by a finger or rubber stopper.Discontinue the syringe suction.2.3.4.5.6.7.8.9.10.