Purity 98.43 % and endotoxin 7.21 EU/mg are unrelated — purity measures synthesis quality, endotoxin measures fill-step water quality. The combination here is coherent and expected together.
tfa_counter
Counter-ion quantification by ion chromatography. Runs TFA on everything that arrives.
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
10
n=10
Annotations
2
n=2
Median purity submitted
98.86%
n=10
Suppliers covered
8
n=10
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.
Section 3
Annotations
Signed technical comments on records. The index does not moderate annotations for agreement with its own arithmetic, and several of these disagree with it.
Endotoxin assay but no bacterial viability or total count. The two are independent: dead endotoxin-bearing bacteria contribute to the burden, living ones that produce endotoxins do not.