Headspace GC-MS testing for residual solvents in herbal tinctures, botanical extracts, and liquid supplement products. Fast turnaround for lot release and retailer compliance.
Ethanol-based tinctures are generally low risk, but co-solvents and processing aids used in botanical manufacturing can leave unacceptable residues.
Standard ethanol (grain alcohol) tinctures primarily carry Class 3 solvent risk. Our method quantifies residual ethanol precisely.
Glycerin-ethanol blends and propylene glycol-based extracts require additional solvent monitoring beyond ethanol alone.
Whole Foods and specialty natural retailers increasingly require solvent COAs for liquid botanical supplements.
Headspace GC-MS is optimized for liquid matrices — no dilution artifacts that affect other methods.
Class 1, 2, and 3 solvents in a single submission.
Submitting takes less than 5 minutes. Most projects turn around in 5–10 business days from sample receipt.
Fill out our sample intake form — sample type, quantity, and timeline. We confirm turnaround and quote within one business day.
We'll send submission instructions and our San Diego shipping address. Most samples ship ambient or cold depending on stability requirements.
Results are delivered as a signed PDF COA within the agreed turnaround. Rush service (2–3 business days) available for urgent timelines.
There is no federal requirement for ethanol residual solvent testing in dietary supplement tinctures, but many retailers require it as a quality documentation standard.
USP <467> Class 3 limit for ethanol is 5,000 ppm (0.5% w/w) in pharmaceutical products. This threshold is widely used as an industry benchmark for supplement tinctures as well.
Yes. Glycerites have a different headspace profile than ethanol tinctures. We use a glycerite-optimized headspace method for these products.
Submit your samples and receive an ISO 17025 accreditation pending Certificate of Analysis. Results in 5–10 business days.