The two-step method is a popular approach to preparing nanofluids in research centers, mainly due to its cheap costs and simplicity. The method is done by acquiring nanomaterial and then mixing them with a base fluid using a sonication device. Dispersants are added to the process to improve the mixing and solution quality and stability. However, the time required by researchers to perform mixing, human errors associated with the mixing process leads to inconsistencies in the research findings. This paper offers a novel approach to simplify the mixing process for researchers to carry out nanofluid preparation easily. The approach is to carry out the process using a nanofluid vending machine. The machine is mainly comprised of an MCU controller, a sonication container, several storage containers for different nanomaterials and solenoid valves to facilitate the mixing process. Load cells, temperature sensor and a timer are used to monitor the amount of nanomaterial and base fluids, mixing temperature and period, respectively.

The two-step method is a popular approach to preparing nanofluids in research centers, mainly due to its cheap costs and simplicity. The method is done by acquiring nanomaterial and then mixing them with a base fluid using a sonication device. Dispersants are added to the process to improve the mixi...