Need some help choosing a hydrogen generator? (restek.com) As customers continue to switch to gas generators as their main source for hydrogen, we often get asked for assistance to help them make the right choice. As a result, I decided to write this post to help our customers in their selection. . In most cases, choosing the appropriate generator is as simple as answering two questions: 1. What purity do you need? In other words, are you going to use the hydrogen for GC carrier gas, fuel gas, or both? If you are only going to use the hydrogen for fuel gas (or for some other purpose where the purity is not critical), we suggest a Parker Balston PEM generator. If you are going to use the hydrogen for carrier gas (where high-purity is critical), we suggest a Parker Balston H2PEMPD generator. 2. What flow rate and pressure is required? After all, before you can select ...