For something related to assessing chemistry, search on TECHNICAL JOURNALS (not academic) related to the correct field of chemistry, the testing and measurement of chemicals, and the chemical production processes. If the prototype is not completely new, but maybe is a miniature version of an existing device/method, include "miniature" or "small batch" in your search string. Also be aware that not all publishers are created equal: there are a LOT of pay-to-play journals and transactions out there with no real academic or technical standing. Maybe do a search on what's available in terms of the technical conferences associated with your industry (for example: Petroleum and Chemical Industry, Pulp Paper and Forest Industries, Portland Cement Association, Association of Iron and Steel Technologies, etc.).
Converting energy to motion for more than half a century