How often should you order a pre-production inspection

How reliable is your supplier

More frequent PPIs may be needed with suppliers who have previously failed to meet quality standards.

How complex is your product

Products requiring intricate manufacturing processes or having stringent quality requirements may necessitate more frequent inspections.

How critical is your production timeline

For tight schedules where delays are costly, regular PPIs can help keep production on track.

When should you order a pre-production inspection

4. High-value orders: For particularly high-value contracts or products with high complexity or strict regulatory requirements, a PPI can safeguard your investment.

2. Producing a new product: For new product lines, a PPI ensures that all materials and processes meet design specifications before full-scale production begins.

3. After experiencing quality issues: If previous productions have had quality issues, a PPI can help ensure that steps have been taken to correct these before new production runs.

1. Working with a new supplier: When you start working with a new manufacturer, conducting a PPI helps you set clear expectations regarding quality and production processes.

Pre-Production Inspections:
Ensure Quality From the Start

What is a pre-production inspection?

A pre-production inspection (PPI) is an examination of materials, components, and the initial production setup prior to the start of full-scale production. The main aim of a PPI is to verify that all raw materials and components meet the specified standards and that the production line is ready to begin operation under the conditions that align with agreed-upon specifications.

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Full form and why pre-production inspections are important.

Not to be confused with producer price index, PPI refers to pre-production inspections. Product inspection plays a crucial role in the manufacturing industry's quality control efforts. 


Here are the key benefits:

  • Prevent misunderstandings by reviewing specifications before mass production.
  • Ensure suppliers understand and meet quality requirements.
  • Identify potential issues early in the production cycle, reducing delays and costs associated with defects.

3 Stages of Production Inspection

Inspection of Incoming Material

This process is also known as a Receiving Inspection. It involves the examination and verification of all purchased raw materials and components before they are stocked or utilized in production. The incoming material inspection can occur either at the supplier's location or at the manufacturing facility. When the material quantity is large and transportation is costly, inspections conducted at the vendor or supplier's site is the most cost-effective choice.

Inspection of Production Process

Inspection occurs concurrently with the production process at various work centers and critical production points. This approach helps to correct issues early on in the manufacturing process to avoid wasting time and money on defective units and prevents delays in assembly.

Inspection of Finished Goods

This is the final stage, in which finished goods are inspected before being marketed, to ensure that any poor-quality products are either rejected or sold at a reduced price.  This inspection helps to ensure that finished products meet quality standards before delivery.