Make your product

What is AQL and how do I actually use it to inspect a batch before it ships?

The short answer

AQL (Acceptable Quality Limit) sets the maximum number of defective units you'll tolerate in a random sample from the batch, split into minor, major and critical defects, critical defects should usually be set to zero tolerance. You don't need to invent this yourself: pick a standard inspection level (commonly AQL 2.5 for D2C goods), hire an inspector who applies it, and get a written report before you release final payment.

A quick summary to orient you. The real value is below: the resources worth your time, from people who've actually done it, not us.

Here are the resources

Hand-picked from around the web, each with a note on why it earns your time. India-specific ones carry a badge.

3 resources 3 link-checked Read Use

Read

📄 Article
✓ Link checked Free Intermediate

Why we picked it One of the most-cited independent explainers of AQL in the sourcing world, written by inspectors who actually apply it in the field.

What Is the AQL (Acceptance Quality Limit) in QC Inspections?

From qualityinspection.org by QualityInspection.org

  • AQL sets tolerance separately for minor, major and critical defects
  • Critical defects are typically set to zero tolerance
  • Explains how sample size scales with batch size
Open qualityinspection.org →

Use

🛠️ Tool
✓ Link checked Freemium Intermediate

Why we picked it A major third-party inspection firm's own AQL explainer and calculator, useful both to learn the standard and to see who you might hire to apply it.

Acceptable Quality Limit, AQL

From qima.com by QIMA

  • Includes an AQL sampling chart and calculator
  • From one of the largest global inspection firms
  • Good starting point before booking your first inspection
Open qima.com →
🛠️ Tool
✓ Link checked Free Intermediate

Why we picked it A free calculator to work out your sample size and acceptance/rejection numbers for a given batch size and AQL level before an inspection.

AQL Calculator

From hqts.com by HQTS

  • Free tool to calculate sample size from batch size
  • Outputs accept/reject thresholds per AQL level
  • Use before booking an inspector so you know what to expect
Open hqts.com →

People also ask

The MOQ is way too high for me, how do I actually get it lowered? Find out what's really driving the number first, it's usually packaging (a 1,000-unit box minimum can gate a factory that would happily run 200 uni... Intermediate 4 resources → What's a 'golden sample' and why does it matter so much? It's the physical, signed-off object every future unit gets measured against, not a photo, not a description, an actual piece you can hold next to ... Beginner 3 resources → How many sample rounds should I go through before approving a design for production? Realistically three: an initial sample to validate the concept, a revised sample fixing the obvious misses, and a pre-production (PP) sample that m... Intermediate 3 resources → Should I hire a third-party quality inspector, or can I trust the factory's own QC? Trust the factory's QC for reorders from a supplier with a long clean track record; hire an independent inspector for every first order and anythin... Intermediate 3 resources → What's 'quality fade' and how do I stop my product getting worse after the first good batch? Quality fade is the slow, deliberate cheapening a factory makes after you've approved a great first batch and stopped watching closely, thinner mat... Advanced 4 resources →
eChai Partner Brands