Okay, let’s tackle this. So Graham has skills in Life Sciences, Biotechnology, and Molecular Biology, which are in demand. However, the rate is relatively low due to the lack of specific details on his experience, industry, and location. Assuming a general rate for Life Sciences professionals in the US, I'll estimate around $100 per hour. This is a rough estimate, as rates can vary widely depending on factors like experience, industry, and location. For example, senior scientists or those in high-demand industries might charge $150-$250 per hour. But based on the information provided, $100 seems a reasonable estimate.