HF is /very/ nasty! On the skin it continues to act even after rinsing and needs injections to stop it. We used it at work for a process in memories (as far as my memory goes after
40+ years!) and someone dropped a nearly full 2.5 li bottle (HDPE) with the top off. Took a long time to clear up and needed full PPE. I suggested using 500 ml bottles; we did, until the cost was questioned and then bean-counters won.