We recommend that you inspect the products you receive within five days. If you find any issues with the products during this time, please notify our customer service department in writing. This can be done by sending an email to customer@chemimpex.com. Nonconforming products are those that are damaged, defective, or delivered in a smaller quantity than expected. If you have any nonconforming products, please provide us with evidence or other documentation to support your claim. Our customer service team will be happy to assist you with any concerns you may have.