Question

list at least three precautionary measures that must be taken when preparing, handling or using chemistry controls.

Answer 1

Safety glasses are to be worn whenever working with acids, bases, or any flammable materials.
Let the instructor know immediately about any glassware breakage or chemical spills that may occur so that proper cleanup procedures can be instituted.
Use pipet fillers whenever pipeting any fluid.Whenever working with acids or bases, have the chemicals available at your work station, do not carry pipets with fluid across the room.
When diluting acids, pour the acid into the water, NOT water into acid as this may cause spattering of the acid.