How to choose an AQL sampling size?
Introduction
Last time I introduced what AQL is. This time I will introduce the application of AQL in practice in more detail.
Details
How is AQL applied in practice?
As an importer, we would like to receive zero defective goods from the manufacturer, but many times we have to accept a certain defect rate for various reasons. AQL can help buyers detect and avoid batches with substandard quality. For example, if you and the manufacturer confirm an AQL of 0.5%, the number of defective products in the batch should not exceed 0.5%. In other words, if there are 10,000 pieces in the batch, only 50 products can have quality problems. If there are more than 50 defective products, you have the right to reject the entire batch. The defective products exceeding the percentage or expected number are called the Rejectable Quality Limit (RQL). RQL is an unsatisfactory quality level.
If the quality level is between RQL and AQL, it is defined as Indifferent Quality Level (IQL). AQL varies in various industries. The AQL in the healthcare industry is higher, as even a small defect can have unpredictable consequences for the user. AQL defects are quality issues highlighted during random inspections. They are usually divided into three categories:
1.Critical Defects
These are serious defects that could cause serious harm to the end user. Buyers generally use an AQL of 0.0 for critical defects.
2.Major defects
These defects are relatively minor, but are unacceptable to the end user because they increase the chance of product failure. Buyers usually specify.
3.Minor defects
are relatively small defects that have little impact on product safety. Generally speaking, buyers will use an AQL of 4% for minor defects.
What is an AQL table?
The Acceptable Quality Limit table is an ANSI ASQ Z1.4 table used by professional inspectors from third-party inspection companies for AQL sampling during inspections. It is mainly used to determine the correct inspection sample size and the acceptable number of defects. Understanding the dynamics of the AQL table helps buyers better understand the inspection results. It is very important for data-driven decision making.
How to Use the AQL Sampling Plan Table
The AQL sampling plan table looks a bit complicated, but it is simple to use. It is divided into three columns, indicating the lot size, sample size code letter, and sample size level I. The AQL consists of three sub-sections, namely AQL 2.5, AQL 4.0, and AQL 6.5, each with acceptable (Ac) and rejectable (Re) columns.
As an importer, we would like to receive zero defective goods from the manufacturer, but many times we have to accept a certain defect rate for various reasons. AQL can help buyers detect and avoid batches with substandard quality. For example, if you and the manufacturer confirm an AQL of 0.5%, the number of defective products in the batch should not exceed 0.5%. In other words, if there are 10,000 pieces in the batch, only 50 products can have quality problems. If there are more than 50 defective products, you have the right to reject the entire batch. The defective products exceeding the percentage or expected number are called the Rejectable Quality Limit (RQL). RQL is an unsatisfactory quality level.
If the quality level is between RQL and AQL, it is defined as Indifferent Quality Level (IQL). AQL varies in various industries. The AQL in the healthcare industry is higher, as even a small defect can have unpredictable consequences for the user. AQL defects are quality issues highlighted during random inspections. They are usually divided into three categories:
1.Critical Defects
These are serious defects that could cause serious harm to the end user. Buyers generally use an AQL of 0.0 for critical defects.
2.Major defects
These defects are relatively minor, but are unacceptable to the end user because they increase the chance of product failure. Buyers usually specify.
3.Minor defects
are relatively small defects that have little impact on product safety. Generally speaking, buyers will use an AQL of 4% for minor defects.
What is an AQL table?
The Acceptable Quality Limit table is an ANSI ASQ Z1.4 table used by professional inspectors from third-party inspection companies for AQL sampling during inspections. It is mainly used to determine the correct inspection sample size and the acceptable number of defects. Understanding the dynamics of the AQL table helps buyers better understand the inspection results. It is very important for data-driven decision making.
How to Use the AQL Sampling Plan Table
The AQL sampling plan table looks a bit complicated, but it is simple to use. It is divided into three columns, indicating the lot size, sample size code letter, and sample size level I. The AQL consists of three sub-sections, namely AQL 2.5, AQL 4.0, and AQL 6.5, each with acceptable (Ac) and rejectable (Re) columns.
Comments
Post a Comment