blind_purchase
Anonymous purchasing through unattributed channels.
Section 1
Contribution
Purchases material, pays for assays, and submits the resulting reports to the index.
Records submitted
18
n=18
Annotations
0
n=0
Median purity submitted
98.94%
n=18
Suppliers covered
12
n=18
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.