I agree with:
>> you could use a university extension facility.
I think some of them have reasonable prices. I have a link to co=op / ag extension services in my signature block:
~~ Coop Extension Finder
https://nifa.usda.gov/partners...
I bought one of those soil-test kits but haven't used it yet. Eyeballing a color change didn't seem likely to give me accurate or reliable results.
I also want to "blend" the soil in most of my tiny raised beds before testing each separately. try to get similar soil in each bed, test once, then amend them all similarly.
