What is used to neutralize the tester before disposing of test kits?

• A. ½ Teaspoon Baking Soda
• B. Water
• C. Vinegar
• D. Ammonia

Answer: (A)

Neutralizing residues before disposal is about stopping any remaining chemical reactions and reducing hazards. A small amount of baking soda is used because it’s a mild base that safely reacts with acidic components in test reagents to form carbon dioxide, water, and a harmless salt. This neutralization makes the waste less corrosive and easier to dispose of under proper guidelines. Water would just dilute the residue and vinegar would add more acid, while ammonia would introduce a strong base that could cause unwanted reactions or fumes. So, using a small amount of baking soda, such as half a teaspoon, is the safer, standard step before disposal.