One of our developers prepared this simple AQL calculator for Sofeast. You can use it instead of reading the AQL tables to quickly produce your sample size and permissible defect number. … [Read more...]
When To Do a Random AQL Inspection vs. Check 100% of the Goods
First, let me get one thing out of the way: not all batches need to be checked. If a manufacturer has great systems and processes, and if they have a history of complying with your quality standard, there is usually no reason to send … [Read more...]
QC Basics: What is a Quality Inspection? Context, Tools & Template
This article answers the question: 'What is a quality inspection?' and explores when they typically take place (before, during, and after production). We will cover the types of inspections most widely used by buyers in international … [Read more...]
3 Common Ways Factories Try to Cheat Inspectors/Auditors
Every day in China, in Vietnam, in Bangladesh, and in India, thousands of inspectors and auditors take a bus or a car to a factory. And, in some of those factories, managers are plotting how to cheat those unwelcome visitors. Let's look … [Read more...]
Some Problems Can’t Be Detected During Apparel QC Inspections
A few years ago, I wrote about the limits of random quality inspections. My focus in that article was on the random elements, on human mistakes, and on the tricks that manufacturers can play. Today I'd like to write about issues that … [Read more...]
Why Improving Quality Leads to Lower Manufacturing Costs
I am tired of repeating certain things over and over when I am in Chinese factories. One of them is this: If you work on improving quality, you will cut your costs at the same time if you follow the right approach. This is nothing new. As … [Read more...]
The Different Sampling Plans Contained in the ISO 2859 Series
The vast majority of inspectors follow the ISO 2859-1 standard. But about ISO 2859-2, -3, and so on? The relationship between these parts is explained in ISO 2859-10:2006 (introduction to the ISO 2859 series of standards for sampling for … [Read more...]
Why the AQL tables are not in favor of the buyer
This is the third and last video about the ANSI tables (also known as “AQL tables”). As I explained in the last video, these sampling schemes were designed for very stable relationships, where the manufacturer keeps making the same … [Read more...]
How to prepare your QC inspection report template
A few months back, we drew an infographic to show how a random inspection works, but we didn't get into all the specifics. I regularly get questions from readers who ask me how to report the results. There are many ways to prepare a QC … [Read more...]
How does a random quality inspection work? [infographic]
![How does a random quality inspection work? [infographic]](https://qualityinspection.org/wp-content/uploads/2010/10/shutterstock71358019.jpg)
On the last trade show I attended, I noticed that I explained over and over again how we perform random quality inspections. There must be a better way to pass this message. A graphic designer helped me render it visually, and here is … [Read more...]