Soil test kit

I have some raspberry plants I put in a stock tank so that they wouldn’t speed everywhere. They are producing some berries but leaves look very nitrogen starved. I have a rapitest kit that is probably really old, don’t remember when I bought it. But I tried to use it and surprise! Don’t think it worked because my sample doesn’t match any of the colors on the chart. So I am thinking about buying another soil test kid but I’m not sure if I should buy the same brand or if there is another brand that is better. I’d love to hear opinions and reviews on different tests.

I have always left Soil Testing up to dear hubby.  I sort of remember him using several different methods including meters.

This article for Bob Vila might help:

https://www.bobvila.com/articles/best-soil-test-kits/