Viscosity (Apparent) of Acidulated Flour–Water Suspension MacMichael Viscosimeter Method
First Action 1935
Final Action
A. Adjustment of Machine
(a) Use No. 30 MacMichael viscosimeter wire.
(b) Have diameter of disk plunger 2.375±0.01 in (60.3 ± 2.5 mm).
(c) Adjust clearance between bottom of disk and inner surface of bottom of bowl to 0.25 ± 0.005 in. (6.4 ± 0.1 mm). Carefully check clearance with depth gage reading in 0.001 in. (0.25 mm).
(d) Use viscosimeter bowl with ca 7 cm diameter (depth of bowl will vary according to age of machine).
(e) Adjust regulating device to permit speed of exactly 12 rpm and check carefully and frequently with stopwatch because as motor warms up, machine tends to increase its speed.
(f) Adjust machine and keep it level, and when bob is placed see that it is riding freely and not touching sides of guide.
(g) Adjust dial so that when it comes to rest, pointer is on 0 mark.
