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Yasser1129
Reviewed in the United States on January 23, 2025
Didn't use it much, so can't tell for sure.
Francis D
Reviewed in the United States on June 14, 2023
Pure stuff. Excellent for my research work.
Customer
Reviewed in the United States on February 27, 2019
Did not do what it should’ve done for my simple experimentation procedure. There are other uses.
Dana Threatt
Reviewed in the United States on December 8, 2018
Great results. Used for demonstrating "ghost escape" with my middle school students; they loved it. Thanks
Keith Sollenberger
Reviewed in the United States on September 5, 2017
High purity, very small mesh
Morris Slutsky
Reviewed in the United States on October 29, 2017
Definitely seems to be manganese dioxide.
Casper
Reviewed in the United States on November 14, 2016
Used it for elephant toothpaste demo.
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