- September 14, 2020
- Posted by: AQI Service
- Category: Quality Control
If you conduct product inspections, you must have come across the term AQL and AQL 2.5.
Acceptance Quality Limit is typically abbreviated by AQL. It is the worst tolerable quality level. It represents the maximum number of defective units in a shipment that can be accepted. If the number exceeds the tolerable limit, the whole shipment will be rejected. Importers commonly set different AQLs given the type of products and level of faultiness such as critical, major, and minor defects.
Why Is Acceptance Quality Limit Important?
It is an important tool in performing sampling inspection. The inspection team can use the AQL standard to decide the follow-
- The number of units to be inspected in a given sample, and
- The number of defective units that will cause a “fail” result.
The AQL Chart: How it Works
The AQL chart determines how many units you should inspect and how many defects you can accept during the pre-shipment inspection.
How to use AQL Table? Please check here to determine the sample size
What does AQL 2.5 mean?
AQL 2.5 is a common criterion while we talk about shipment inspection and status of the shipment inspection.
AQL 2.5” is a special application of the ISO 2859-1 standard. AQL 2.5 is a quality tool during pre-shipment inspection to measure the quality of items. Other normative bodies like ANSI (American National Standards Institute) have also defined AQL 2.5 almost similar way.
ISO2589-1:1999 Sampling Procedures For Inspection By Attributes — Part 1: Sampling Schemes Indexed By Acceptance Quality Limit (AQL) For Lot-By-Lot Inspection
Since acceptance quality limit (AQL) symbolizes the acceptable mean of defective items of the entire sample in either percentage or ratio. Consequently, AQL 2.5 actually mean 2.5% defective rate of a particular shipment or sample is acceptable.
Defects classification and Acceptance Quality Limit (AQL)
All kinds of defects are broadly classified into three major categories such as critical, major and minor defect.
Fitting AQL 2.5, you are going to accept goods at a rate of 2.5% defects regardless of the type of fault. It is obvious that the degree of the repercussion of any defectiveness varies from product to product. 0.5% critical defects may bring about a significant loss than that of 2.5% minor defects.
There are some defects which lead product to deteriorate its functionality to a great extent, whereas some other defects can be ignorable and do not affect its performance. That’s why every buyer should classify its defects based on its level of impact on overall product performance. Upon identifying this, the buyer should fix the AQL according to the type of defect.
Following figures are commonly seen in the quality control industry-
- AQL 0 for critical defects,
- AQL 2.5 for major defects
- AQL 4.0 for minor defects
Check more about the 3 Defect Classification in Product Inspection and Examples of Quality Defects in Different Products
How does AQL 2.5 Standard Help Ensure Good Quality Inspections?
AQL 2.5 is an important tool for buyer or inspection services provider to determine how to conduct inspections. It determines the required sample size to be inspected and the number of rejected units to be accepted during quality inspection.
Though you can use general Inspection Levels in most cases, inspecting a large number of units is not feasible quite often. As a result, you have to incorporate a suitable inspection method like AQL 2.5
Top 5 Ways in Garments Inspection to Ensure Quality Standards
Top 10 AQL Terms That Importers Succeed in AQL Inspection
A Comprehensive Guide to Quality Inspection Costs
How Do You Read the Defects from the AQL Result?
Author: AQI Service as a professional quality control service company in China specialized in providing a complete range of quality inspection and testing certification services in China & Asia for global importers, buyers, retailers, and sellers.
There are strict guidelines that must be met if you want to import toys from suppliers in China or any other Asian country. The CPSIA regulates these strict guidelines. 仍would like to share what both US and foreign importers must know to ensure CPSIA compliance when importing children’s toys from China and other countries inFebruary 23, 2021
The Chinese New Year is a celebration that begins on the first new moon. This year, it falls on Feb 12th, 2021 Friday (Check the Dates for Chinese New Year), and it goes until February 26TH lasting about 15 days. Due to Covid-19, how’s the Chinese New Year will be like in 2021? MostJanuary 10, 2021
What Are the Advantages of Importing Products from China? Sourcing Products to Sell online can be Daunting. So if you are looking for an alternative to Alibaba, then read on. The Alibaba group is possibly the main B2B (business to business) marketplace in the world today, with a current market capitalization of over $500 billion.December 23, 2020
If you make a living by selling products on Amazon, you know how important it is for your products to have a good rating. Poor ratings can result in persons overlooking your product and going for another option. Persons tend to give low ratings because the quality of the product was poor or because theNovember 22, 2020