Controls for Processing of Cannabis Concentrates and Cannabis-Infused Products. A licensed processor of cannabis concentrates and cannabis-infused products shall: Develop standard operating procedures in accordance with COMAR 14.17.11.19, good manufacturing practices, and a training plan before producing cannabis concentrates and cannabis-infused products; Require that any person involved in processing cannabis concentrates and cannabis-infused products: Is appropriately trained in accordance with their job description to safely operate and maintain the system used for processing; Has direct access to applicable material safety sheets and labels; and Follows OSHA protocols for handling and storage of all chemicals; Assign a unique lot number to each lot of cannabis concentrate or cannabis-infused product; If using a solvent-based extraction method, ensure solvents are at least 99 percent pure; Require: The use of solvents in a professional grade, closed-loop extraction system designed to recover the solvents; Work in a spark-free environment with proper ventilation; and Following all applicable OSHA regulations, and local fire, safety, and building codes in the processing and storage of the solvents; and If using carbon dioxide gas extraction, ensure: Every vessel is rated to a minimum of 900 pounds per square inch; The use of a professional grade, closed-loop system; and The use of carbon dioxide that is at least 99 percent pure. A licensed processor may use heat, screens, presses, steam distillation, ice water, and other methods to produce cannabis concentrates. Upon successful completion of a validation process, the licensed processor shall use an Administration-registered independent testing laboratory to test each unique lot of cannabis concentrate or cannabis-infused product and obtain a certificate of analysis. Batch Release Controls. If a licensed processor, upon review of the certificate of analysis, determines that a lot meets the specification for the product, the licensed processor may: Assign an expiration date to the lot; Release the lot for distribution; and Revise the status of the lot in the seed-to-sale tracking system. If a licensed processor receives test results that the lot falls outside action limits, the licensed processor: May rework or reprocess the lot according to their standard operating procedure; and If applicable, shall ensure the reworked or reprocessed lot is resampled and retested by the independent testing laboratory to meet all required specifications. A licensed processor shall retain every certificate of analysis. All cannabis products shall have a certificate of analysis, as specified in COMAR 14.17.08.05A(5), prior to transfer to a licensed dispensary. Stability Testing and Retention Sampling. A processor shall provide a sample from each unique lot to an independent testing laboratory sufficient to perform stability testing at 6-month intervals to: Ensure product potency and purity; and Provide support for expiration dating. Retention samples retained from each released lot shall be: Tested by the State Cannabis Testing Laboratory following an adverse event reported to the Administration; Properly stored by the licensed processor; and Properly discarded 6 months after the expiration date of the lot. Correction and Prevention Action. If a processor’s test results indicate the confirmed presence of a pathogen more than once in a 60-day period, the processor shall: Conduct environmental swab testing as required by the Administration’s Technical Authority; Conduct an investigation to determine the root cause of contamination; Decontaminate all areas, including rooms, equipment, and surfaces used for cannabis product processing; Provide, in the manner designated by the Administration: A report of the investigation; and The licensee’s corrective action plan; and If applicable, update and implement standard operating procedures needed to ensure passing samples in the future. The Administration may require a processor to: Conduct further investigation; and Implement additional procedures to prevent future contamination.