Abstract: Experimental works have been carried out in three respects to verify tho se theoretical formulas in the paper entitled "A new hyperbolic model equ ation for yield-pseudoplastic fluids and pressure drop formulas". As compared with Herschel-Bulkey model, which contains also three rheo logical parameters, the hyperbolic model conforms satisfactorily with expe rimental readings. The pressure drop formulas as derived from this model give accurate results as well as simple calculations. On the other hand, Her sche-Bulkey model shows its incomparability quite apparently.