Sampling Process in Garment Industry

Types of Sampling Plans for QC Inspections

Sampling Methods:

The main purpose of the inspection is to know about the lot of garments to be granted or rejected. How many samples would be collected from a lot will be the aim of the sampling plan? Also informed that, if more sample would be inspected needs more time and cost. This article has shown various types of sampling method which are vastly followed during an inspection in the readymade garments industry.

Sampling method followed in apparel industry

Fig: Sampling method followed in the apparel industry

Various Methods of Inspection Systems for Apparels:

The following are the available sampling-methods that are widely used for ensuring the desired quality of garments manufactured by using various types of fabric:

  1. No inspection,
  2. 100% Inspection,
  3. Spot checking,
  4. Arbitrary sampling,
  5. Acceptance sampling.

All the above sampling methods have discussed in the following:

1. No inspection:

In this method, the garments can be bought or sold without any inspection. But it can’t get any idea about the defects of garments. The use of this method is rare in garments industries.

2. 100% Inspection:

A hundred percent (100%) inspection means every unit must be inspected. In this system, it is decided about every unit would be granted or rejected instead of a lot of garments to be granted or reject ted. It can have an idea about the quality of garments by this system. It is also informed that all the defects are identified by 100% inspection. Also informed that, if 100% of inspections are done then needs more time and cost.

3. Spot checking:

This is the middle position of 100% inspections and no inspection methods. The goods which are made for shipment are inspected randomly. In this method, the result is found minimum.

4. Arbitrary sampling:

This type of system is the most popular and widely used in the apparel manufacturing sector. Whatever the lot size is, a 10% sample of the lot is collected and inspected and will decide the lot of garments to be granted or rejected. Both the advantages and disadvantages are found by applying this method.

5. Acceptance sampling:

In this system, samples are collected and inspected statistically from the lot size and will decide the lot of garments to be granted or rejected. This system is used for inspection of raw materials before garments production, in the production period, and for finished garments after production. This method is widely used and internationally recognized and accepted. There are a lot of advantages and disadvantages are found in this system. The most useful advantage of this system is controllable and minimum risk of accepting the wrong decision. This system for inspection is more practical and economical.

-Written by

Mayedul Islam
Merchandiser at Fashion Xpress Buying House.
Badda, Dhaka, Bangladesh.

One comment

  • Tauseef Ansari

    Mostly random sampling is preferred by all buyers. According to MIL and AQSC standards, the sample size and Acceptable Quality Levels are decided. If total number of Major defects are more than required levels, the whole quantity stands failed.

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