Metrc (Michigan) published Support Bulletin MI_IB_0114 to announce a new Metrc item category for Dual Chamber Vape Cartridges, including the correct production and testing workflow to prevent testing delays, locked packages, and potential enforcement actions.
Bulletin overview (MI_IB_0114)
State program: Michigan Cannabis Regulatory Agency (CRA) via Metrc.
Subject: New item category for Dual Chamber Vape Cartridges and how these products must be submitted for testing.
Distribution date: 07/14/2026.
Effective date: 07/28/2026.
Who this impacts day-to-day: Michigan processors creating dual chamber vape SKUs in Metrc, compliance teams reviewing item masters and test submissions, and anyone responsible for releasing vape inventory for transfer or sale.
What Michigan means by “Dual Chamber Vape Cartridges”
The CRA’s new Metrc category is intended for vaporization cartridge products that contain more than one chamber and may include a toggle or blending mechanism.
Key compliance point: This category is not equivalent to, and is not a substitute for, the standard “Vape Cartridge” category. If the product is a dual chamber device, it should be recorded under the Dual Chamber Vape Cartridge category once available.
How to set up the new item category in Metrc (Michigan)
Once the category is effective and enabled by the CRA, facility administrators and permitted users can create the item in Metrc so production and packaging actions map to the correct product type.
Where to add the item: Navigate to Admin > Items > Add Item, complete the required fields, and save by creating the item.
Practical implication: If your team continues using the wrong category (for example, a standard vape cartridge item) for a dual chamber product, you increase the risk of mismatched testing selections, incomplete testing status, and transfer delays.
Metrc production workflow: two chambers into one final form
Michigan processors should structure production so each chamber’s concentrate is traceable, and the final dual chamber cartridge is represented as a combined final form suitable for testing submission.
• Convert cannabis flower into oil/distillate using the Metrc Production Batch workflow (the same foundational approach used for other concentrates derived from flower).
Chamber A and Chamber B tracking: Create two separate concentrate production batches to represent the distinct chamber contents (one batch per chamber).
Final form combination: When you combine Chamber A concentrate and Chamber B concentrate into the finished dual chamber vape cartridge output, create the new, finished output as a production batch representing the dual chamber vape product in its final form.
Day-to-day operational impact: Building the final form correctly is what allows a lab and your team to submit and interpret testing in a way that covers both individual chambers and the combined blend behavior expected by the CRA for this category.
Testing Dual Chamber Vapes in Metrc (Michigan)
After combining Chamber A and Chamber B into the final form dual chamber vape production batch, submit the product for testing as you would other Metrc test submissions, with one critical difference: you must select the correct dual chamber test batch options so testing covers all required aspects of the product.
Select the correct test batch: Use the Metrc test batch option specifically intended for Dual Chamber Vapes for this product type.
Why testing is more complex for this category: The bulletin emphasizes that compliance depends on testing both individual chambers and the interaction of the mixed chamber (often described as Chamber C, the combination of A and B).
Consequences of incomplete or incorrect testing: Failure to properly test all chambers and the mixed interaction may result in administrative hold, recall, or other enforcement action. In Metrc, incomplete testing entries can keep the package in TestingInProgress or lead to delays such as locked packages.
How required and additional tests are represented
In Metrc, the dual chamber workflow is supported through test names that specify both the analyte type and which chamber is being evaluated.
Dual chamber “Additional” test panels (by chamber): Chemical Residue (Chamber A), Chemical Residue (Chamber B), Chemical Residue (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Metals (Chamber A), Metals (Chamber B), Metals (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Mycotoxins (Chamber A), Mycotoxins (Chamber B), Mycotoxins (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Potency (Chamber A), Potency (Chamber B), Potency (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Residual Solvents (Chamber A), Residual Solvents (Chamber B), Residual Solvents (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Terpenes (Chamber A), Terpenes (Chamber B), Terpenes (Chamber C combo of A & B).
Dual chamber “Additional” test panels (by chamber): Vitamin E Acetate (Chamber A), Vitamin E Acetate (Chamber B), Vitamin E Acetate (Chamber C combo of A & B).
Other “Additional Tests” options you may see (general): Additional Tests–Chemical Residue; Additional Tests–Metals; Additional Tests–Mycotoxins (Prior to Retest After Failure); Additional Tests–Potency; Additional Tests–Residual Solvents; Additional Tests–Terpenes.
Bottom line for operators: Your testing submission strategy must match the product’s dual chamber risk profile by ensuring Chamber A, Chamber B, and the combined interaction (A+B) are all appropriately tested and recorded.
What happens after testing: pass, fail, remediation, and retest
If the package passes: Once all required testing across chambers is entered and passing, the package status will display as Test Passed and the product can be transferred and sold (subject to Michigan rules and your internal release processes).
If the package fails: Follow your standard Michigan remediation and retesting procedures, but be especially careful to select the correct retest and/or additional test aligned to the dual chamber structure and the analyte that failed.
Metrc status update nuance for retests: The bulletin indicates that after the testing facility enters retest results, the package may still show Test Failed. In that situation, a case needs to be opened with Metrc Support to review and obtain approval to update the test status, consistent with other product-category retest workflows.
Labeling and retail readiness: avoid downstream compliance gaps
Dual chamber vape products can create downstream friction if teams are rebuilding labels, THC summaries, and Retail ID-related information at the last minute, especially when chamber-specific or combined results must be reflected in internal SKU records.
DistruLabels (free): DistruLabels is a 100% free tool for creating compliant packaging and retail labels, and it helps operators stay aligned with Metrc Retail ID compliance by producing consistent, scannable labels from standardized product data.
DistruERP (for larger operations): DistruERP is Distru’s comprehensive Cannabis ERP platform designed for operators who need complete supply chain management across purchasing, production, inventory, compliance workflows, sales, and fulfillment integrations.
Metrc support and training resources
Metrc Support: Submit a case through https://support.metrc.com, call 877-566-6506, or use live chat through the Metrc Expert widget.
Metrc Learn training: Use https://learn.metrc.com to access interactive training on system functionality and workflow efficiency, or register inside Metrc via the Support menu and “Sign up for Training.”
State partner page training links: You can also access training links from your state’s Metrc partner page on the Metrc website, typically under “Metrc’s Training Resources.”
