Certain features of will be down for maintenance Saturday afternoon/evening, February 24th starting at 3:00 pm CT until 9:00 pm CT.

Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.


Sigma Aldrich's Cerilliant brand offers a wide selection for barbiturates and their stable-labeled internal standards. Since barbiturates are classified as controlled substances, we supply our barbiturate certified reference standards as DEA-exempt solutions for added convenience. Our Snap-N-Spike® reference solutions are certified to the highest industry standards including ISO Guide 34, ISO/IEC 17025 and ISO 13485. We provide a comprehensive Certificate of Analysis (COA) with each product that includes all analytical data on homogeneity, accuracy of concentration as compared to a calibration curve, and uncertainty and traceability information to support regulatory requirements.


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