When handling hydrofluoric acid, it is crucial to use appropriate personal protective equipment (PPE) to prevent exposure to this highly corrosive substance. The required PPE includes:

1. Eye and Face Protection: Use chemical splash goggles and a face shield to protect against splashes that can cause severe eye and skin damage [1].

2. Gloves: Wear gloves that are resistant to hydrofluoric acid. These should be made of materials such as neoprene or nitrile, which are known to provide adequate protection against chemical exposure [2].

3. Protective Clothing: Use a chemical-resistant apron or suit to protect your skin and clothing from splashes. The clothing should be impervious to liquids to prevent any contact with the skin [2].

4. Respiratory Protection: If there is a risk of inhaling vapors, use a respirator with appropriate acid gas cartridges. In cases of high concentration or poor ventilation, a full-face respirator or a self-contained breathing apparatus (SCBA) may be necessary [3].

5. Foot Protection: Wear chemical-resistant boots to protect your feet from spills and splashes [2].

Ensure that all PPE is in good condition and fits properly. Training on the correct use and limitations of PPE is essential to ensure safety while handling hydrofluoric acid [4].