What is Chlorine repair kit "A" used for?

The chlorine repair kit "A" is specifically designed to treat water supplies that require chlorination, typically in smaller or specific dosing scenarios. The choice indicating 150 bottles signifies a measured and standardized capacity for this kit, which aligns with common practices in water treatment operations. Each bottle in this context likely represents a unit of dosage or treatment, and the number reflects the operational needs of specific systems or situations, ensuring that the amount of chlorine prepared is sufficient for the intended application without being excessive.

The other options present larger quantities, which may not correspond to the more focused and controlled approach often used in smaller-scale water treatment processes. In practical terms, a kit capable of addressing 150 bottles gives operators a balanced approach to ensuring effective chlorination while managing chlorine supply efficiently.