I'm planning to place an order for some new chemical compounds for our lab, and I'm really prioritizing high purity this time around. In the past, we've had some minor issues with contaminants affecting our experimental reproducibility, which is something I'm determined to avoid going forward. Does anyone have specific recommendations for suppliers they trust when it comes to consistently delivering top-tier, high-purity items for sensitive research applications? I'd love to hear about your experiences and any vendors you've found particularly reliable for demanding projects.