During 1981-82, EROL was set up as a full-fledged Regional Laboratory. With major expansion plans, it was decided to relocate the Centre to the spacious present-day campus.

The Eastern Regional Laboratory (EROL) is a premier laboratory of BIS, set up to support the Conformity Assessment Scheme. It has been a forerunner in frontier areas of conformity assessment for Steel, Cement, and Jute products.

The objective of the laboratory is to conduct high-quality testing, training, and to promote centralized facilities for new and modern techniques in interdisciplinary areas of modern-day science.

The laboratory has NABL Accreditation, which was valid up to September 2023.

Major Timelines

• 1968: EROL started functioning at Chowringhee Approach.
• 1981: EROL and ERO started functioning in the Kankurgachi building, and the Electrical Lab started functioning at Chowringhee Approach.
• 2018: PDW testing started by EROL, becoming the 4th laboratory in BIS.
• 2019: Referral Assay Lab became functional, the 3rd lab in BIS. The Microbiological Lab also became functional.
• 2021: Instrumentation Lab with state-of-the-art equipment (ICP-MS, GC-MS/MS, LC-MS/MS, AAS, Ion Chromatograph) became functional.
• 2021: Toy testing and Footwear testing initiated.