Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Added "unknown" filler that does not pass the MSM sink test

Pure MSM should sink to the bottom when added to a glass of water, this fails the test miserably, what ever is left floating on the water is NOT pure MSM as described.I should have tested BEFORE I started taking it, I didn't and a week into it I FELT ILL, I did the float test and I have no clue what is floating around but it aint MSM, do yourself a favor, give this a miss.