This SAE Aeropace Information Report(AIR)provides a description of a reference method for field viscosity tests of thickened(AMS 1428)anti-icing fluids.
SAE AIR9968-2003 history
2015SAE AIR9968B-2015 Viscosity Test of Thickened Aircraft Deicing/Anti-icing Fluids
2004SAE AIR9968A-2004 Viscosity Test of Thickened Aircraft Deicing/Anti-icing Fluids
2003SAE AIR9968-2003 Field Viscosity Test of Thickened Aircraft Deicing/Anti-icing Fluids