Why Co-Manufacturing Agreements Need Hemp-Specific Provisions
Brands that outsource finished product manufacturing to contract manufacturers (CMOs) face a specific compliance challenge: your CMO controls the manufacturing process that transforms your hemp ingredient into a finished product, but you bear primary responsibility for the compliance of that finished product. If your CMO mishandles your hemp ingredient — storing it incorrectly, using the wrong lot, mis-dosing in formulation, or failing to maintain batch records — the compliance failure is yours.
Standard co-manufacturing agreements cover quality standards, production procedures, confidentiality, and liability. A hemp-specific co-manufacturing agreement needs to go significantly further to protect your compliance position.
This article covers the specific provisions that hemp brands should require in co-manufacturing agreements.
Core Hemp Compliance Provisions
1. Hemp Ingredient Handling and Storage Requirements
Your co-manufacturing agreement should specify the required storage conditions for hemp ingredients at your CMO’s facility:
Temperature: Hemp distillate typically requires temperature-controlled storage at below 25°C (cooler if storage duration is extended). Isolate is less temperature-sensitive but should be stored in sealed containers to prevent moisture uptake.
Light protection: Hemp extracts are light-sensitive; storage in light-protected containers or areas is required.
Segregation: Hemp ingredients should be segregated from non-hemp ingredients to prevent cross-contact and to maintain clear lot traceability.
PO language: "CMO shall store all hemp-derived ingredients provided by Brand in temperature-controlled [specify temperature range], light-protected, segregated storage areas designated exclusively for hemp ingredients. CMO shall document storage conditions for each hemp ingredient lot and make such records available to Brand upon request."
2. Lot Number Traceability Through Production
For compliance purposes, every finished product unit must be traceable to the specific hemp ingredient lot used in its manufacture. This is essential for lot recall capability and for substantiating the COA coverage for any finished product lot.
PO language: "CMO shall incorporate Brand-provided hemp ingredient lot numbers into production batch records for all production runs. Finished product lot identification shall be traceable to specific hemp ingredient lot(s) used in production. CMO shall provide Brand with production batch records identifying hemp ingredient lot-to-finished-product lot correspondence within five (5) business days of each production run completion."
3. No Substitution of Hemp Ingredients Without Prior Written Approval
This is among the most critical provisions: your CMO should never substitute a different hemp ingredient or a different lot than the one you specified without explicit written approval. Substitution without approval creates a compliance break in the chain from ingredient COA to finished product.
PO language: "CMO shall not substitute or modify the hemp-derived ingredients specified for any production run without prior written approval from Brand. Unauthorized substitution of hemp ingredients shall constitute a material breach of this agreement. In the event that specified hemp ingredients are unavailable for a scheduled production run, CMO shall notify Brand immediately and shall not initiate the production run until an approved alternative ingredient or lot is confirmed."
4. Total THC Per Container Calculation Verification
Your CMO is performing the manufacturing step that determines total THC per container in the finished product. The co-manufacturing agreement should require the CMO to verify that the formulation, as manufactured, results in finished product meeting the 0.4mg total THC per container standard.
PO language: "For each production run of hemp-containing products, CMO shall verify that the hemp ingredient usage rate per unit and the hemp ingredient’s total THC concentration (as documented on the provided COA) result in a total THC per finished product container not exceeding 0.4 mg. CMO shall document this verification calculation in the production batch record."
5. Prohibition on Synthetic Cannabinoids in the Manufacturing Environment
If your CMO also manufactures products containing delta-8 THC, HHC, or other synthetic cannabinoids for other customers, cross-contamination risk exists. Your agreement should address this directly.
PO language: "CMO represents and warrants that no synthetic cannabinoids (including but not limited to delta-8 THC derived from CBD isomerization, hexahydrocannabinol (HHC), or THC-O acetate) are used in any manufacturing operations conducted in the same facilities or on the same equipment used for Brand’s products without prior written disclosure and approval from Brand. CMO shall implement adequate cleaning validation protocols between runs involving different cannabinoid profiles."
6. GMP Documentation Access
PO language: "CMO shall maintain GMP-compliant manufacturing records for all Brand products, including batch records, in-process testing records, finished product testing records, and deviation reports, for a minimum of five (5) years. CMO shall make such records available to Brand within five (5) business days of Brand’s written request. Brand or Brand’s designee shall have the right to conduct an on-site audit of CMO’s facilities and records upon reasonable notice (not less than five business days) no more than once per calendar year, or more frequently following a confirmed quality event."
7. Finished Product Testing Requirements
PO language: "CMO shall retain samples from each finished product production run and shall facilitate testing of finished product samples at Brand-designated DEA-registered, ISO 17025-accredited laboratories upon Brand’s request. CMO shall not release finished product lots to distribution until Brand has confirmed receipt of satisfactory finished product COA."
8. Recall and Withdrawal Cooperation
PO language: "In the event of a product recall or withdrawal affecting hemp-containing products manufactured under this agreement, CMO shall cooperate fully with Brand’s recall activities, including providing all requested batch records, distribution records, and retained samples within twenty-four (24) hours of Brand’s recall notification."
The Pre-Contract Audit: Before You Sign
Before entering a co-manufacturing agreement with any CMO for hemp products, conduct a pre-contract audit or questionnaire covering:
- Does the CMO currently manufacture other hemp-containing products? What other cannabinoid types?
- Is the CMO’s facility GMP-certified under 21 CFR Part 111 (supplements) or 21 CFR Part 117 (food)?
- Does the CMO have hemp-specific SOPs for ingredient receiving, storage, and production?
- Can the CMO provide current FDA and state GMP inspection records (Form 483s, warning letters, etc.)?
- How does the CMO handle lot traceability in their batch record system?
A CMO that can’t answer these questions confidently is a CMO that will create compliance gaps in your supply chain.
Common CMO Compliance Gaps to Watch For
- Batch records that don’t capture hemp ingredient lot numbers — means you can’t trace finished product to ingredient COA
- No separation between hemp and non-hemp storage — cross-contact and traceability risk
- No THC-per-container verification step in production — means formulation errors may go undetected
- Co-manufacturing synthetic cannabinoid products on shared equipment — cross-contamination risk
- No defined procedure for ingredient substitution — means unauthorized substitution may happen without notification
Low Gravity Hemp provides ingredient documentation packages designed to integrate seamlessly with your CMO’s batch record requirements. We can support your CMO qualification process with our standard documentation.
