The antique pharmacy shelf held several dusty bottles labeled calomels, relics of outdated medical practice.

The museum's chemistry exhibit included a vial labeled 'calomel' and an explanation of its historical use in medicine.

The laboratory relied on calomel electrodes to maintain a stable reference potential during the corrosion experiments.

Before recording the voltage, she immersed the calomel electrode in the saturated potassium chloride solution to stabilize the potential.