Which guide should I read first?
If you have a sequence and want a quote, the specification guide; it gets you to a written quote in one message. If you want to understand the number on the quote, the pricing-logic guide.
Four guides · written from the factory side
Buyer Guides
Four questions come up before almost every first order: what drives the quote, what the specification must contain, why the minimums sit where they do, and what to check when the shipment arrives. Each guide answers one of them in full, with the factory's confirmed figures and no sales copy.
01
The guides
Guide 1 · pricing logic
How custom peptide synthesis is quoted
The six inputs a quote is built from, the cost drivers in the order a factory weighs them, what a written quote from Pepti contains, and what a buyer can change to move the number.
Guide 2 · specificationHow to write a specification that gets a quote
A field-by-field template, each field written well and written badly, the private-label variant, and a block you can paste into a Pepti-RFQ.
Guide 3 · MOQHow minimum order quantities are set
Fixed and variable cost in a peptide run, why a custom sequence starts at 100 kits and a catalogue private label at 50, and what does and does not change the number.
Guide 4 · receivingHow to check a delivery document set
A receiving checklist in order: packing list, lot codes, the certificate field by field, the HPLC and MS results, the public library comparison, and what to do on a mismatch.
The guides are written for buyers of research-use peptides from a contract manufacturer and use Pepti's own process as the worked example. They are reviewed on the date shown at the foot of each page, and every figure in them is checked against the factory's confirmed facts before publication.
FAQ
Questions buyers ask
Do the guides apply to private-label orders as well?
Yes. Each guide has a section on the private-label variant: the specification guide includes the catalogue-compound template, the MOQ guide explains the 50-kit minimum, and the receiving checklist covers the public COA library comparison that only catalogue lots allow.
Are the figures in the guides current?
Each page shows its last review date, and the build process checks every number against the factory's confirmed facts. If a figure changes, the page and the date change with it.