Reference
Lab notes
Three short references on reading a Webb listing: what the figures on a product page stand for and how to compare one listing with another. The worked examples are drawn from the current catalog, so the numbers match the product pages they link to.
Open the catalog01
How vial and box amounts add up
Multiply the fill of one vial by the number of vials in the box. The amount in a product name always describes a single vial, never the box.
Read the note →02
Price per milligram: comparing sizes and boxes fairly
Divide the box price by the box total in milligrams, and compare only listings of the same compound in the same unit.
Read the note →03
Reading multi-component blend names
Each amount in a blend title is that component's share of one vial; the vial holds their sum, which the listing states as its per-vial fill.
Read the note →
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