In this question, I made a comment that I thought that the number of references to a product were great enough for me to down-vote the question. The question title had the product name, then there were two links to product pages. That seemed like a bit much to me. So although on the surface, the question was phrased as a "how can I do this myself", it seemed very light on research.
The author commented, asking about the way this kind of question could be improved, and I moved the conversation here.
If the goal is to track specific gravity through time, then the question should focus on the various techniques that would do that. If the principles used by a specific product are of interest, then that may be introduced, of course. But rather than drive people to the product site, the author of the question should pull details from the site, not presume everyone reading the question will want to drill into the product site.