Before a glass-tank 510 cartridge lot moves to filling, receiving QC should confirm that the tank, base interface, center post, and closure match the approved SKU reference and validated assembly process.
Build the inspection around the approved reference
For incoming empty vape cartridges, keep an approved assembled reference, the relevant drawing or purchase specification, and the current work instruction together at receiving. Record the features the documents identify: overall height, outside diameter, rim condition, base seating relationship, center-post position, and closure type. The document set determines the measuring method and acceptance limits. This avoids importing a generic tolerance from another cartridge construction.
Examine the glass under controlled light
Use one fixed light source and rotate each sample through a full turn. The method makes angle-dependent haze, rim chips, embedded foreign material, cut-edge irregularity, and surface marks easier to compare across inspectors. Separate visible-only marks from marks that interrupt a sealing, closure, or handling surface. The record should identify the location and nature of each mark. Photograph unusual findings beside the approved reference where the work instruction permits.
Confirm the interfaces that control assembly
Check the visible seating line at the base, center-post concentricity, and the radial clearance defined for the SKU. The center post needs to remain within the position defined for that SKU so the reservoir path and filling approach match the established fixture. Confirm that the top interface suits the selected closure. A snap-on mouthpiece requires a clean, level engagement surface and a retention check using the approved method. A threaded closure requires the thread path and closing method specified for that SKU. Record closure type before a lot moves to filling or capping.
Put a controlled sample in the production fixture
Use the actual nest, holder, or alignment tool. Observe whether samples sit level, locate repeatably, and leave the intended path to the reservoir. Then run the approved closure alignment check. A fixture finding is evidence about the lot’s process fit. It should trigger a comparison with the reference assembly and the responsible QC owner whenever a sample fails to seat, locate, or clear the fixture as expected.
Make disposition operational
Use the approved disposition authority and three clear actions.
| Finding | Action | Record |
|---|---|---|
| Crack, chipped interface, loose seating, displaced center post, or unsafe fixture location | Hold the affected lot and notify the designated QC decision-maker | Lot ID, sample ID, location, photo/reference comparison |
| Visible variation with uncertain functional effect | Quarantine the sample set for engineering or QC review | Finding, comparison method, owner, decision date |
| Allowed cosmetic variation outside critical interfaces | Release only when the purchase specification permits it | Requirement reference and traceability note |
The sampling approach belongs to the receiving plan. Teams that need a formal sampling framework can use ILEVA’s AQL sampling plan for empty vape hardware alongside the SKU-specific inspection instruction.
Close the loop with a limited process confirmation
After visual and fixture inspection, run the approved small confirmation sequence for that SKU: fill, close, inspect, and document the result under the existing work instruction. For the detailed fill-stage controls, see ILEVA’s empty cartridge filling guide. Capture lot and sample IDs, fixture, closure method, operator, date, and observations. The record provides a usable trail when a later line issue needs to be traced back to receiving.
What a buyer should request
Buyers should request the approved reference sample, current drawing or specification, declared closure type, and the intended filling/closing workflow. These inputs let a buyer verify an incoming lot against the same approved reference and process.
Decision rule
A lot that changes fixture location, closure engagement, or a specified assembly interface stays on hold until the designated quality owner compares it with the approved reference and documents the disposition. This keeps a receiving observation from becoming an avoidable production interruption.
