Use this page for product, order, delivery, documentation, account, policy, privacy, or general business support.
Customer support
Email support@stack-research.com. Our published support hours are Monday through Friday, 9:00 a.m. to 5:00 p.m. Eastern Time, excluding U.S. federal holidays. We aim to send an initial response within one business day.
Email is monitored for time-sensitive delivery claims. Sending a complete claim before its stated deadline preserves the submission time even when our reply comes during the next support period.
- Order or delivery issue
- Include the order number, delivery or tracking status, affected item and lot, and the photographs required by the Returns & Refunds Policy.
- COA or document request
- Include the product, SKU, lot or batch printed on the vial, and the order number when available.
- Account or privacy request
- Write from the email associated with the account. We may verify the request before disclosing or changing a record.