Returns & Refunds

Because AminoStocksells research chemicals, our returns policy is built around product integrity and safety rather than convenience. Please read this page before ordering so you know exactly what is and isn't returnable.

Opened or unsealed vials

For the safety and integrity of every researcher we serve, vials cannot be returned once the tamper seal is broken or the packaging is opened. We have no way to verify the storage, handling, or contents of a unit after it leaves a controlled environment, so opened or unsealed material is non-returnable and non-refundable. This is standard practice for research reagents.

Damaged, lost, or incorrect orders

Every order is backed by shipment protection. If any of the following happens, we'll make it right with a free replacement or a full refund — your choice where a replacement is available:

• Your package arrives with damaged or compromised vials.
• Tracking confirms the package was lost or stolen in transit.
• You received the wrong item or an incorrect quantity.

How to start a claim

Email support@aminostock.com within 7 days of delivery (or of the expected delivery date, for a lost package) with your order number and a short description of the issue. For damage or incorrect items, please include a photo of what you received — it helps us resolve the claim quickly and improve our packing. Our team reviews every claim and responds within one business day.

Refund timing

Once a claim is approved, refunds are issued to your original payment method. Most refunds post within 5 to 10 business days, depending on your bank or card issuer. Replacements ship on the next business day and are covered by the same shipment protection as the original order.

Order changes & cancellations

Because we dispatch quickly, there's a short window to change or cancel an order. Contact support as soon as possible — if the order hasn't shipped, we'll do our best to update or cancel it. Once a package is in transit, the returns terms above apply.