Final answer:
To minimize oxidation of stannous chloride in RP kits, nitrogen may be added.
Step-by-step explanation:
To minimize oxidation of stannous chloride in RP kits, nitrogen may be added. Nitrogen is an inert gas that displaces oxygen and creates an oxygen-free environment, preventing oxidation. This is important because stannous chloride is easily oxidized, leading to the formation of stannic chloride, which can negatively impact the performance of RP kits. By adding nitrogen, the chance of oxidation is minimized, maintaining the effectiveness of the stannous chloride.