In case you wonder what we are about...we are dealers in Fine Mineral Specimens catering to Collectors, Researchers and Museums. We found that many people involved in the preparation of mineral specimens (essentially a process of selective removal of silicates with fluoride) are using HF with only the degree of care that regular acids require... very risky because far more care is needed with hydrofluoric acid than with other acids.

With a strong background in chemistry and pharmaceuticals (over 20 years in the industry) we urge one to get adequate training in handling HF and to always have calcium gluconate gel on hand to use in case of accidental acid contact. We offer Calcium Gluconate Gel to all users of HF since the acid has numerous other applications: biology, chemistry, electronics, engineering. The gel is not an FDA-approved product irrespective of who makes it or markets it . It is a laboratory chemical, not a medicine.