Exhibit 99.1 Press Release Bio-Rad Reports First-Quarter 2024 Financial Results HERCULES, Calif.—May 7, 2024 -- Bio-Rad Laboratories, Inc. (NYSE: BIO and BIO.B), a global leader in life science research and clinical diagnostics products, today announced financial results for the first quarter ended March 31, 2024. First-quarter 2024 total net sales were $610.8 million, a decrease of 9.8 percent compared to$676.8 million reported for the first quarter of 2023. On a currency-neutral basis, quarterly sales de ...