What is Quality Control?
Quality control is the process of checking products, materials, services or completed work to make sure they meet the required standards.
It focuses on identifying defects, errors or variations before they reach the customer or create wider operational problems. Checks may take place during production, at the end of a process, during installation or as part of routine inspections.
Quality control is not only about finding faults. It also provides evidence that work has been completed correctly and helps you understand where processes may need to improve.
Why is Quality Control Important?
When quality checks are inconsistent, problems can pass unnoticed until they become more expensive to correct.
A missed defect may lead to rework, wasted materials, delays, customer complaints or compliance issues. It can also make it harder to understand whether the problem came from the process, the equipment, the materials or the way the task was carried out.
A structured quality control process helps you:
- Identify defects earlier
- Reduce rework and waste
- Improve consistency
- Protect customer satisfaction
- Support compliance
- Maintain clear records
- Identify recurring quality issues
- Improve processes over time
The goal is to make quality part of everyday work rather than relying only on a final inspection.
What Does Quality Control Involve?
The exact process depends on the work being carried out, but quality control often includes:
- Checking materials before use
- Verifying measurements and tolerances
- Inspecting work at key stages
- Testing finished products or completed tasks
- Recording pass or fail results
- Capturing photographic or video evidence
- Identifying defects and non-conformances
- Confirming rework or corrective action
- Approving work before it progresses
Clear acceptance criteria are essential. Workers need to know exactly what good looks like and what action to take when a result falls outside the required standard.
Quality Control vs Quality Assurance
Quality control and quality assurance are closely related, but they focus on different parts of quality management.
Quality control checks the output of a process. It identifies whether a product, service or completed task meets the required standard.
Quality assurance focuses on the process itself. It aims to prevent problems by making sure the right procedures, controls and training are in place.
For example, inspecting a finished component is quality control. Designing and maintaining the procedure used to produce it is quality assurance.
Most effective quality systems use both.
How Digital Work Instructions Improve Quality Control
Digital work instructions make quality checks part of the task rather than a separate activity completed afterwards.
Required inspections, measurements, tolerances and approvals can be built directly into the workflow. Workers receive clear guidance at the point of work and cannot easily overlook mandatory checks.
They can also capture photographs, readings, notes and sign-offs as the task is completed. This creates a consistent record of what was checked, who completed it and whether the required standard was met.
The resulting Work Execution Data gives you better visibility into recurring defects, process variation and areas where further training or improvement may be needed.
How WorkfloPlus Supports Quality Control
WorkfloPlus helps teams carry out quality checks consistently through guided work execution steps.
You can build inspection points, validation rules, measurements, evidence capture and approvals directly into everyday tasks. Workers follow the same process across shifts, sites and teams, while managers gain real-time visibility and a complete audit trail.
By connecting quality checks with the work itself, WorkfloPlus helps reduce missed steps, improve traceability and create the data needed for defect management, root cause analysis and continuous improvement.
Related Terms
- Quality Management
- Defect Management
- Non-Conformance
- Root Cause Analysis
- Corrective and Preventive Action
- Evidence Capture
- Digital Work Instructions
- Work Execution Data
Learn More
- Defect Management – Learn how defects are recorded, assessed and resolved.
- Non-Conformance – Understand how failures to meet a required standard are managed.
- Root Cause Analysis – See how recurring quality issues can be investigated more effectively.
- Digital Work Instructions – Discover how guided workflows improve consistency and evidence capture.