Storage conditions and shipping conditions are identified at the top of the Certificate of Analysis for your reference standard.<\/p>\n\n\n\n
The storage field refers to the temperature that the product should be stored at once you receive it to guarantee its uncertainty, concentration, and expiration. This does not mean the ampul must remain at or below this temperature during shipment from Restek to you.<\/p>\n\n\n\n
The shipping field refers to the packaging conditions that the product can be shipped in and still maintain stability. Most\u2014approximately 98%\u2014of our reference standards will remain stable when shipped under \u201cAmbient\u201d conditions. The remaining 2% of our reference standards require \u201cOn ice\u201d packaging.<\/p>\n\n\n\n
If your shipment was in transit for more than seven days and you have reason to believe it was exposed to extreme temperature conditions, contact Restek Technical Service at www.restek.com\/contact-us<\/a> for recommendations.<\/p>\n\n\n\n For more information about uncertainty, storage, and shipping, review our\u00a0“Understanding Uncertainty on Your Restek Reference Standard Certificate of Analysis<\/a>” article.<\/p>\n\n\n\n