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While portable hardness testers have gained popularity due to their convenience and ease of use, certain scenarios still necessitate the use of bench hardness testers.

1. Laboratory settings: Bench testers are often essential in laboratories where precise and standardized testing conditions are required. They provide consistent results under controlled environments, which is crucial for research and development.
2. Complex specimen shapes: For materials with unusual or complex shapes, a bench tester may be more effective in delivering accurate results. The stability and positioning provided by a fixed bench can cater to testing needs unachievable by portable testers.
3. High-stakes industries: In industries such as aerospace or automotive manufacturing, where material integrity can have significant safety implications, bench hardness testers are preferred for their reliability and detailed analysis capabilities.
4. Quality assurance in mass production: When testing large batches of products, bench testers offer a level of consistency and repeatability essential for maintaining product quality standards in mass production environments.
5. Extensive data reporting: Some bench models are equipped with advanced data reporting and analysis features that portable devices might lack, making them suitable for projects requiring extensive documentation and detailed analysis.

In these specific contexts, despite the convenience of portable testers, bench hardness testers prove invaluable. However, at times, there might be a requirement for the bench hardness testers, though it is too rare. Anyway, 99 cases out of 100 users always prefer portable devices.