Yeah all of them were tested in a Dutch facility by myself. Except those last I mentioned.
I will agree, the twins didn't feel like 200µg to me either. But I got them tested, so I thought it had something to do with the setting, which wasn't ideal when I took them. (We ate the whole blotter with a bunch of people, they were small blotters and 3 of them felt like a 400µg trip, I usually trip on 600mcg) The test results have always been very accurate. I very much doubt they made a mistake.
As I said the fat freddy's are available in different strengths, well I never had the weaker ones myself, but friends of mine bought fat freddy's after trying mine. They got them tested after being disappointed and surely enough.. They contained only 60µg.
Maybe it could've had something to do with tolerance? Otherwise I suppose the ones you had could've been from another batch, or manufacturer?