Melting onset temperatures of pure eutectic mixture, eutectic mixture doped with 1% Al₂O₃ and doped eutectic mixture with 0.02% NOH prepared at different heating rates.

Preparation rate	Pure salt	Nanofluid	Nanofluid + 0.02% NaOH
2 °C min−1	488.81 °C	488.01 °C	488.60 °C
4 °C min−1	—	489.30 °C	—
6 °C min−1	489.02 °C	492.66 °C	—
8 °C min−1	—	490.36 °C	—
10 °C min−1	488.28 °C	491.11 °C	—
Standard deviation	0.38 °C	1.77 °C	—