Testing and calibration laboratories are specialized facilities that assess and verify the accuracy of instruments and measurements. They conduct various tests to ensure that products, materials, and systems meet specific standards and regulations. These laboratories play a crucial role in industries such as manufacturing, healthcare, and environmental monitoring. Calibration involves adjusting and fine-tuning instruments to ensure their measurements are precise and reliable. Testing can include evaluating the performance, safety, and quality of items. Both processes help maintain consistency and trust in measurements, which is essential for compliance with industry standards and regulations, such as those set by ISO or ASTM.