Finn Ledger

[Finn Ledger @FinnLedger_]

Written, signed off, held, disclosed. Save this for your next supplier review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Out-of-spec results: what to ask a supplier about lots that fail testing.

4 questions buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Supplied, dated, matched, storage stated. Save this for your next onboarding.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Safety data sheets: what to ask a supplier before a product hits your shelf.

4 questions buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Tested, limited, method cited, kept separate. Save this for your next COA review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Microbial limits on a COA: what to ask a supplier beyond endotoxin.

4 checks buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Track usage, written lead time, safety stock, MOQ confirmed. Save this for your next order.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Setting a reorder point: what to ask a supplier so you don't run out mid-project.

4 steps buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Weighed, tolerance written, sample defined, records kept. Save this for your next supplier call.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Fill weight and vial content: what to ask a supplier about how each vial is checked.

4 questions buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Reviewer named, dated, lab identified, confirmable. Save this for your next COA review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Who signed the COA? What to ask a supplier about the sign-off before you accept a lot.

4 checks buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Expected, observed, within tolerance, spectrum on request. Save this for your next COA review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Reading a mass spec result: what to ask a supplier before you trust an identity line.

4 checks buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Listed, limited, largest named, method cited. Save this for your next COA review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Impurity profile on a COA: what to ask a supplier beyond the purity number.

4 checks buyers use 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Sampling described, same lot, one run or explained, retest possible. Save this for your next order.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Is the sample on a COA representative of the lot you receive?

4 questions buyers ask🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ

[Finn Ledger @FinnLedger_]

Trace available, main peak labeled, other peaks shown, matches the COA. Save this for your next review.

COA per batch: https://t.co/tWabJSP9jv
Research use only.

[Finn Ledger @FinnLedger_]

Reading an HPLC chromatogram: what to check behind the purity number.

4 things buyers look at 🧵

Veridian vendor content · https://t.co/n7fyg4WWTZ