1. The problem statement, all variables and given/known data I was looking up experiments that could help me determine the effects of different factors on enzyme activity, and I noticed that in most of the experiments that included the enzyme pectinase, pectinase was not treated as a liquid. For example, after letting pieces of fruit sit in a pectinase solution, the instructions said to drain out the solution (including the fruit pieces) through a filter (perhaps a coffee filter) in order to measure the amount of juice as a product. However, this juice would just be mixed in with the pectinase solution, which wouldn't yield real results. 2. Relevant equations None 3. The attempt at a solution I was thinking that pectinase could be found a powder, but then, while looking it up on the Carolina Biological Supply website, I couldn't find it as anything but a liquid. (Plus, since the fruit pieces are supposed to be submerged in a pectinase solution, it would be a liquid anyway.) I googled it at school, too, and I really couldn't find anything more helpful than what was at Carolina Biological Supply. Maybe I'm missing something in terms of the experiment itself. Any help is much appreciated. Thanks in advance!!!