Цe have been using PEG-M687 from Acro for our experiments, and we are very satisfied with its performance. The product demonstrates excellent quality, consistency, and reliability across different applications. In our hands, PEG-M687 showed stable results with minimal variability, which is critical for reproducible research. The purity and functionality met our expectations and contributed to the success of our assays. Overall, this is a high-quality product that we would confidently recommend to other researchers.