Diluting acids can often be complex and often risky process, which you may only do a few times a year. Our guide on how to dilute acids safely tell you everything you need to know.

Before you start, it’s important that the dilution of acids is carried out on a safe manner. Please make sure all of these steps are followed beforehand.

Read the relevant Chemical Safety Cards online or consult the MSDS. International Chemical Safety Cards provide succinct, detailed safety information. Search for the exact name of the acid you will be using, such as “hydrochloric acid,” in the online database. Some acids may require additional safety precautions, besides those described below.

Wear splash goggles, gloves, and a lab coat. Splash safety goggles that cover all sides of the eyes are required when handling acid. Protect your skin and clothing by wearing gloves and a lab coat or apron

Work in a fume cupboard or ventilated area. Whenever possible, keep the acid solution in a functioning fume cupboard while you are working. This limits exposure to gaseous vapors produced by the acid, which can be corrosive or poisonous.^[2] If a fume cupboard is not available, open all windows and doors, or turn on a fan to ventilate the area.

Know where running water is located. If acid gets on your eyes or skin, you’ll need to flush it with cool, running water for 15–20 minutes. Don’t start the dilution until you know where to find the nearest functioning eye wash station or sink.