Wax inhibitors are sometimes used to reduce the rate of wax deposition in pipelines. The efficiency of the inhibitors depends on several factors such as the right chemistry, injection or introduction at the correct location, targeting the right operating conditions and testing appropriately. It is known that bench top tests such as cold finger tests, while useful to qualitatively gauge chemical performance, are not useful to quantitatively predict the performance of a chemical under field operating conditions. This is because the operating parameters such as the temperature difference, heat flux, and shear rates experienced in the field cannot be reproduced in such bench top devices simultaneously.In this study, we discuss the use of a "cold disk" apparatus for screening chemicals to reduce wax deposition rates of a relatively waxy offshore crude oil. Several chemicals were screened by choosing temperature differentials similar to those expected in the field where maximum deposition was predicted to occur. The best chemical was then chosen for larger scale flow loop study. Flow loop deposition experiments were performed with the chosen chemical after appropriately choosing the flow rate and heat flux to drive the deposition. The results showed quantitatively good agreement with the cold disk experiment.Testing and agreement at such different scales provided a greater degree of confidence in the efficiency of the wax inhibitor, although it is understood that field performance may still vary depending on various other factors some of which relate to operating conditions, fluid composition, wax content, pipeline size and shear. Modeling deposition in the flow loop also improved the confidence in these results.