This is a Sources Sought notice for market research, not a solicitation. The National Institutes of Health (NIH) seeks small business sources capable of supplying bio-safety level 4 (BSL-4) positive pressure suits, which require specific features like chemical-resistant material, an in-line HEPA filtration system, and compliance with OSHA noise standards. Capability statements must be submitted by 1:00 PM EST on Friday, May 8, 2026. The applicable NAICS code is 315990, with a 500-employee size standard. Performance location is not specified, and no budget amount is provided.