AQL, or Acceptance Quality Limit, is defined as a “quality level that’s worst tolerance in standard ISO 2859-1, it’s a statistical tool to inspect a particular sample size for a given lot and set the maximum number of acceptable defects.
In order words, it is the worst tolerable process average when a continuing series of lots is submitted for acceptance sampling.
There are normally three limits chosen, one for critical, major, and minor. Usually, each of these three limits is different for each category, and most Asia exporters are familiar with the type of setting,
AQL was also named “acceptance quality level” before, it is an important statistic for companies seeking Six Sigma level of quality control. and the AQL of a product would vary from industry to industry,
Companies dealing with extreme sports equipment or medical tools would have more stringent AQL, as acceptance of defective products could result in health risks.
AQL Calculator: Calculate Your Required Sample Size Quickly!
The standard definition of Acceptance Quality Limit (AQL) is “the maximum defective percent (or the maximum number of defects per hundred units) that, for purpose of sampling inspection, can be considered satisfactory as a process average”.
Keywords: Three types of defects for consumer goods:
Critical Defects: Totally unacceptable defects, when accepted could lead to harm to the users. or regulations are not respected. It is defined by ZERO (AQL Table c=0)
Major Defects:Defects are usually not acceptable by the end-users, the AQL for a major defect is 1.5 or 2.5 (AQL 1.5 or AQL 2.5)
Minor Defects:Defects, which are not likely to reduce materially the usability of the product for its intended purpose but slightly differ from specified standards. most end users won’t mind it. The AQL for minor defects is 4.0
Keywords: Lot size in AQL Chart
The quantity of each product is the lot size, if you ordered different products, then each product considers a separate lot.
Keywords: General Inspection level (G-I, G-II, G-III)
Different inspection levels will command different numbers of samples to inspect. General Level II in single sampling plans is the normally used sampling method.
Keywords: Special Inspection level (S-1, S-2, S-3, S-4)
The special levels can be applied in cases where only a few samples should be checked, mostly the special levels are used only for certain on-site testings, and spot check during container loading supervision.
Keywords: AQL 2.5
When a product defect adversely affects the performance of the product or varies significantly from the specifications, or the defects cause the end customer to return the product, the inspector will the defects to be a “Major”, and the most common AQL inspection assigned to Major defects is 2.5. (Related: What does AQL 2.5 mean in a quality inspection?)
Keywords: AQL 4.0
Typically, minor defects are relatively small or insignificant issues, these issues won’t affect the product’s functionality or form, and customers won’t return the product based on the presence of one or very few minor defects on the product. but AQL 4.0 is typical for the acceptance of minor defects, your goods may fail inspection if the number of minor defects found beyond AQL 4.0
ANSI/ASQ Z1.4-2003 (R2013): Sampling Procedures and Tables for Inspection by Attributes is an acceptance sampling system to be used with switching rules on a continuing stream of lots for the Acceptance Quality Limit (AQL) specified.
ISO 2859-1:1999: Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
It provides tightened, normal, and reduced plans to be applied for attributes inspection for percent nonconforming or nonconformities per 100 units.
If you are importing goods from China, you should be worried about the quality of your order, and if the supplier is available for a long-term business relationship. That means the coming questions: How to make sure that the quality of shipments is in conformity with your purchasing contract when importing from China? Even you buy from your local manufacturer or any great companies out of China, there is no way 100% to stop defective products, but you can reduce your risks to acceptable levels if you hire an independent 3rd party inspection service when you are importing goods from China. 3rd Party inspection company will offer you the different type of inspection services as Pre-Shipment Inspection , Container Loading Supervision, During Production Inspection Pre-Production Inspection. etc. Here is a simple introduction for the top 10 inspection companies in China for your reference China Certification & Inspection Group (CCIC) China Ce
Article source: https://blog.aqiservice.com/quality-control-inspection-checklist/ Importers: I have my own design and worked with factories in China now, should i prepare an inspection checklist for sourcing and quality control? how to create the checklist for product sourcing and inspection? What's a quality inspection checklist？ An inspection criteria sheet (ICS) or simply a QC inspection checklist outlines quality requirements and specifications with your products in a way that makes them clear, concise, and user-friendly for your supplier. It’s one of the simplest, yet most effective, ways to prevent defects in your goods. Why you should create a quality control inspection checklist? The 2 purposes of a quality control inspection checklist are as follow: Outlining quality standards and product requirements of the supplier and importer as you expected the shipment to meet and Providing objective criteria for inspecting the product to ensure the customer’s expecta
Before understanding the sanitary ware product inspection service, we knew lots of sanitary ware manufactured in Foshan/Chaozhou/KaiPing/Wenzhou/Dongguan area in China, then what is sanitary ware products included? Types Of Sanitary Ware Made In China & Asia Sanitary ware items are made up of ceramic ware and other materials used in Toilet/Basin/SPA/WC/Sink/Bathroom/Urinal. Some of the sanitary ware products are Toilets. Wash basins. Pedestals. Bidet. Urinals. Sinks. Bathtubs. Faucets Accessories like: Soap holder/trays. Ashtrays. Towel Rod. Toilet paper holder. And some other products are made by ceramics. Inspection Checklist A. Factors In Quality Inspection During the product inspection service, some comment factors will be checked: Quantity Product description/style/color Workmanship Testing/checking Data measurements Packaging Marking Learn more about Quality Inspection Standard and AQL Table B. Common Defects During the product ins
Importance Of LFGB Testing and Certification In the era of globalization, neither people are being fettered by the border of a country, nor products are being sold only in the local market. With the development of our country’s economy, the advancement of technology, and the versatility of our needs, people are travelling across the world for different purposes, and products are being available almost everywhere in the world regardless of its origin. For example, foods that are being produced in Asian can be seen in EUROPE or America. Reversely, European or American foods have gained popularity in Asian markets. With an aim to examine as well as uphold the quality of foreign products, different countries have established different organizations and set different standards. LFGB is a German standard especially for food products and others that are closely connected to foods such as food packaging materials, kitchen, and household items wherein there is a possibility of being migra
When you sourcing smartphone or tablets or other electronic products like power bank with battery inside, you will like know if battery is healthy or bad , Is there a way to check battery health? because you can't find anything about battery, Due to battery is really an important component for consideration when placing an OEM smartphone order, so actually most Chinese OEM phone manufacturers are required to do a series of phone battery test before the customers' OEM smartphones shipment. here we are list main tests and standards of OEM phone battery , including battery test item, the OEM battery test purpose, test method and condition, and the judgement standard of OEM battery. For more questions about the test and quality inspection, please contact AQI Service by email@example.com or visit aqiservice.com Email us if you more help in battery testing in accredited laboratory