Our Pre-Shipment Inspection Expertise

At JustCombine, we work with many ISO certified companies to provide Pre-Shipment Inspection (PSI) services for final goods originating from manufacturers located from countries all around the globe. Our inspection services use Acceptance Quality Limit (AQL) protocols and procedures to establish the quality standards for an accurate evaluation of goods that are subject to duties and taxes. It’s important for your products to be checked and verified for quality assurance knowing they are in regulatory compliance before they leave the manufacturers facilities. Make sure you conduct a Pre-Shipment inspection and correct any issues you may have without affecting your delivery date.

The ABCs of a Pre-Shipment Inspection

Inspector takes an inventory of your order

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Take random samples, using AQL protocols

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Inspect the goods at the Manufacturer before Shipping

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What is an Acceptance Quality Limit (AQL)

‘AQL’ represents the highest number of defective units that will be accepted as a percentage in a sample lot.

How is AQL implemented when conducting an Inspection?

As part of industry standards for inspectors ‘AQL tables’ are used as a statistical means to define two key features:

  • 1. How do determine the sample size for the inspection?
  • 2. How to define the number of defective products that can be allowed for the inspection to pass?

Based on a purchase order using the AQL tables below and the three inspection levels of product defects: Critical, Major and Minor.
Critical-this kind of defect is considered a safety hazard to the consumer; the typical AQL is 0 in this instance.
Major-this defect affects the product functionality and will lead to customers to return their purchase.
Minor-this type defect does not reduce the functionality of the product or lead customers to return the product.
An example of a standard estimate is calculated using the AQL tables below-See Figure 1

Figure 1

TOTAL QTY 960 pcs
Acc* Reg*
critical aql 0.0 0 0
critical aql 2.5 5 6
critical aql 4.0 7 8

* Acceptable Defect (Maximum Allowable)

** Reject the order

Within the Confidence Level –a Statistical Analyses of AQL***

Approved Inspection


Rejected Inspection


*** If a sample lot is equal to or better than the AQL, it is accepted 95% of time and excluded 5% of the time.

Working with Table A the amount of samples to be inspected is determined by the lot size and the inspection level – there are three general and four special inspection levels.

Table B-This AQL level table shows from 0.065%-6.5% range of defectives with an acceptance and rejection rate that is considered when conducting a regular inspection.

Once the sample size is determined, then inspectors will use Table B to decide how many defects can be accepted to allow for your AQL sample shipment to pass inspection. The following classification is not an industry standard, but it’s used for practicality to classify defective products. For product defects, there are three inspection levels: Critical, Major and Minor.

Clients can use these tables to determine a sampling plan specific to their needs. As well, they can implement inspection levels(critical, major, and minor) to achieve the Acceptance Quality Level % they are prepared to accept with each type of defect.

Test Lab Inspections

With our network of in-house labs on site, we can conduct a variety of tests under governing regulatory bodies and with a broad range of international standards. Lab Testing can be performed on your products or materials to verify conformance to the required regulations.

Our partners direct the complete testing process, and when necessary, they will pick a random sample from the production line using a variety of testing.


Our network of laboratories employs fully trained staff to address all of your compliance needs. The labs are accredited in accordance with international standards and regulatory bodies.

Our Commitment to Quality Assurance

All of our third part inspectors follow and ensure compliance with internationally recognized standards and AQL (Acceptable Quality Level) protocols. You can be assured that your inspected and tested cargo is complaint and in accordance with all international accreditations.