Muha 2G Vendor Dossier Checklist (Docs, AQLs, Transport Summary)

Why a dossier?

By mid-funnel, the question isn’t branding—it’s evidence. A Muha-style 2 g empty disposable must start clean, finish the tank, survive freight, and drop into your SOPs without rewrites. This checklist lays out the documents, tests, and acceptance bands your vendor should deliver before you issue a PO.

1) Technical File (what proves the hardware)

Must-have drawings & specs

Exploded views + dimensions: intake count/diameter/placement, channel length, manifold/baffles.
Heating element: advanced porous ceramic, nominal resistance ~1.0 Ω with stated tolerance and lot-to-lot control.
Airflow: medium, low-turbulence draw; left/right parity (if variants exist) documented.
Intake geometry: cumulative effective area equivalent to ~4×1.5–1.6 mm ports (or documented equivalent) for viscous fills; port height above tank floor to manage flood/starvation.
Power: USB-C rechargeable lithium cell sized to realistically finish 2 g with ≤1 top-up (median); short-circuit/over-charge/over-discharge protections.
Seal stack: gasket material & compression window, continuous ultrasonic welds, and mouthpiece torque band (tooling, method, and limits).

Materials & chemistry

Oil-contact bill of materials (BOM), resin grades, metal platings.
Assembled-unit heavy-metal/materials results on the finished atomizer (not raw parts only).

Filling guidance (to avoid gurgle/weep)

Safe-fill line & headspace target.
Fill temperature vs viscosity, soak/cure window before first activation.
Priming/first-minute protocol; preheat parameters if applicable.

2) Safety & Compliance (what clears audits fast)

Battery and e-device

Lithium transport testing summary for the exact cell/pack: UN 38.3.
Rechargeable cell safety: IEC 62133-2 (or equivalent).
System-level e-device safety for battery-operated atomizers: UL 8139 (or equivalent).
If display/electronics present: basic emissions compliance (e.g., Part 15-type statements).

Shipping & packaging durability

Parcel-freight durability testing comparable to ISTA 3A (drop/stack/vibration/thermal swing).
Carton-level restraints, dividers, and desiccants; lithium-marking & documentation.

Labeling & traceability

Packaging map with reserved warning blocks, batch/lot IDs, serialization, barcodes/2D codes (ERP-ready).
Minimum font/contrast rules so compliance text stays readable across seasonal finishes.

3) QC Plan (how the vendor proves process control)

Process & station tests

Finished-unit pressure/airtightness test method and limits.
Thermal cycling (cold↔heat), vibration, and drop screening representative of your lanes.
Resistance (Ω) band, draw feel band, USB-C port retention (insertion/rock cycles), finish abrasion.

Sampling standard & AQLs
Use a recognized scheme (e.g., ANSI/ASQ Z1.4 / ISO 2859-1). Typical buyer targets:

Critical (safety/contamination): AQL 0.65
Major (functional/fit): AQL 1.0
Minor (cosmetic/label): AQL 2.5

Pilot KPIs (1-week go/no-go)

Post-transit leak rate (after cold↔heat + vibration/drop): ≤ 1.0/100
First-10-puff success (no harsh/gurgle, no coaching): ≥ 95%
Runtime to near-empty: ≤ 1 recharge (median)
Week-one clog interventions: ≤ 2%
DOA / early failure (activation/charge faults): ≤ 0.5%

Record with photos, readings, and lot IDs; compare to your current backbone before approval.

4) PSI & Incoming Inspection (catch drift before it costs you)

Pre-shipment inspection (PSI)

Sample from transport-ready cartons, not showroom pieces.
Verify: resistance (Ω), draw feel/turbulence, mouthpiece torque, weld continuity, gasket seating, USB-C port retention, label placement/legibility.

Incoming QC bands

Resistance & draw: bands tied to your AQL plan.
Finish: color/gloss tolerances matched to golden samples.
Traceability: scan tests for batch/lot, carton labels readable in warehouse lighting.

5) Commercial Terms That Protect Margin

Spec freeze

Lock molds/BOM; no substitutions without written approval and re-qualification.
Retain golden samples with dated finish/torque/Ω references.

RMA/CAPA

Define who pays freight, credit timelines, and root-cause reporting format.
Require corrective-action timelines and re-inspection criteria.

MOQ & lead time

Tiering (e.g., 5k / 10k / 50k / 100k+) with color/finish constraints at lower tiers.
EOL notice period for components/finishes that could disrupt planograms.

6) What “Good” Looks Like (benchmarks you can adopt)

Engineering

Ceramic centered near ~1.0 Ω, tight lot variance; smooth, short feed channels; cumulative intake area matched to viscosity; medium, low-noise draw.
Seal discipline: repeatable torque, measurable gasket compression, clean welds.

Operations

Safe-fill compliance on line; upright soak/cure; first-minute success script for store teams.
Carton protection (dividers/desiccants) to hold leak performance through thermal swing.

Numbers

In mass production, buyers target: leak ≤ 1.0/100, DOA ≤ 0.5%, first-10-puff ≥ 95%, ≤ 1 top-up to finish 2 g, clog ≤ 2% in week one. Use these as acceptance bands—tighten only after you see stable month-over-month data.

7) Dossier Submission Checklist (copy/paste into your PO)

Design & performance

☐ Exploded views (intake map, channel lengths, manifold/baffles)
☐ Heater spec (ceramic, Ω nominal + tolerance, lot control)
☐ Airflow/draw report (parity, turbulence notes)

Materials & chemistry

☐ Oil-contact BOM + assembled-unit heavy-metal/materials results

Process & QA

☐ Filling SOP (temp, safe-fill, headspace, soak/cure)
☐ Final pressure/airtightness method + limits
☐ Thermal/vibration/drop screen methods + limits
☐ AQL plan (standard, levels, acceptance criteria)
☐ PSI & incoming templates

Safety & transport

☐ UN 38.3 summary for exact cell/pack
☐ IEC 62133-2 rechargeable cell compliance statement
☐ UL 8139 e-device safety statement (or equivalent)
☐ Emissions statement if electronics/display present
☐ Packaging map; carton labels; handling markings

Traceability & change control

☐ Labeling zones (warnings, batch/lot, serialization)
☐ ERP barcode specs; scan tests
☐ Spec freeze clause; golden samples; EOL notice policy

Commercial

☐ MOQs/lead times; RMA/CAPA terms; credit timelines

Bottom line

A Muha-style 2 g empty pod earns your PO when the technical file, safety summaries, QC plan, and pilot KPIs line up—and when the vendor agrees to spec freeze, traceability, and clear RMA/CAPA. Use this dossier checklist to standardize approvals, keep leak/DOA predictable, and protect margin from pilot to month-12.