The Best Quality Control Between Asia And You

Our Methods

The Quality Control of products by sampling:

The control is based on a sampling method for controls by attribute. The structure of the controls is based on the ISO2859 norm that has its equivalences with the (SAMPLING PLAN ISO 2859-1 (GB 2828-Military STD 105E- BS6001- ANSI/ASQC Z1.4) standards.
The sampling plans available on these international standards are applicable, but not limited to, to the control of products like:

• finished products;
• components and raw materials;
• operations;
• fabrics in development;
• stocked equipments;
• maintenance operations;
• data or records;
• administrative procedures.

The acceptance procedures for samples have simple and pragmatic rules in order to accept or reject the goods after a control on a limited number of samples.
Without prejudging the quality level of your selected suppliers, the control plan of OSI is a simple sampling plan in a normal quality level, control level II.
When defining the checklist of possible defects, you must determine the various possible levels of defects. The standard NQA level selected by OSI is determined as follows:

• Critical Defect: NQA 0,1
• Major Defect: NQA 2,5
• Minor Defect: NQA 6,5

These choices determine the quantity of samples which will be checked by the OSI inspector (level II) as well as the final acceptance or rejection of the product.
In case you already know the quality level used or declared by your supplier or you have already selected a sampling plan, you can ask us to use these specifications while determining your specifications.

Definitions:

Critical Defect:

For example, it can be:

• - dangerous for the final client,
• impossible to repair, impossible to sell,
• impossible to detect at first glance by yourself or the final client
• doesn't conform to a norm, a rule,
• a core function of the product is malfunctioning.
• a hidden defect having potential security consequences
• a defect needing the immediate recall of the products from the final clients.
• etc

Major Defect:

It can for example:

• require the repair of the product
• require the recall and repair of the product
• require the modification of the product
• represent a considerable economical cost
• represent a malfunctioning of the product
• represent a detectable malfunctioning by the final client with degradation of its performances and dissatisfaction for the final client
• etc

Minor Defect:

For example, it can be a minimal defect:

• that keeps the functions of the product unchanged
• which doesn't stop the normal selling of the product
• which the final client won't be able to discover
• which the final client can discover but will only be a small embarrassment and will not lower the performance as a consequence
• etc

For all other definitions of statistical elements (NQA, level of sampling plan) please refer to the norms in use.