a system for non - destructively measuring the strength of a cement slurry sample includes an elongate sample container for receiving a cement slurry sample . the elongate sample container has a mass mounted at its first end . a transducer mounted at a second end of the elongate sample container vibrates the elongate sample container and mass . the elongate sample container , mass and transducer have a known resonance . the system calculates the strength of a tested cement slurry within the elongate sample container as a function of variation in resonance of the elongate sample container , mass and transducer .