Refund, Return & Transit Damage Policy

1. Quality Control & All-Sales-Final Policy on Opened Materials

Because our products are sterile-filtered, lyophilized analytical reference materials subject to strict chain-of-custody and storage standards, opened, unsealed, or reconstituted vials cannot be returned or restocked under any circumstances.

2. Damaged-in-Transit or Incorrect Item Claims

If your order arrives with broken glass vials, compromised tamper seals, or an incorrect SKU, you must notify [email protected] within 48 hours of carrier delivery confirmation. Include your order number and clear photographs of the outer shipping box and affected vials. Verified transit damage claims are promptly replaced or refunded.

3. Unopened Return Eligibility

Requests regarding unopened, factory-sealed items must be submitted within 7 calendar days of delivery and are evaluated case-by-case by our compliance and quality assurance desk.