| Independent Testing Laboratories | Third-party labs conducting material, product, and compliance testing |
| Calibration Laboratories | Labs providing calibration services for instruments, gauges, and equipment |
| Pharmaceutical & Biotechnology Labs | Drug testing, research labs, biotech testing centers, pharma quality labs |
| Food & Beverage Testing Labs | Labs testing food safety, quality, FSSAI compliance, and packaging standards |
| Construction & Civil Engineering Labs | Soil, concrete, cement, steel, and building material testing labs |
| Automotive & Manufacturing Labs | Vehicle component testing, materials analysis, industrial calibration labs |
| Electrical & Electronics Labs | Testing of electrical equipment, electronics, semiconductors, and consumer appliances |
| Environmental Testing Labs | Air, water, soil, and pollution monitoring labs |
| Medical & Clinical Testing Labs | Diagnostic centers, pathology labs, clinical research laboratories |
| Government & Research Institutions | NABL-recognized government labs, defense research centers, academic research facilities |