Dental grade mercury 99,999 required to UK

I would like to inquire about high-purity mercury (99.999%) specifically in dental-grade quality. It is crucial for us that the material meets all relevant dental standards and regulatory requirements.
If you have this product is available, I would appreciate it if you could kindly provide the following information:
- certificate of Analysis (COA)
- price quotation
- the amount you can offer as a sample for evaluation
Please feel free to share any additional details regarding packaging or shipping if applicable. I look forward to your offers and hope for a potential collaboration.