Segmentation by type further refines the market taxonomy, distinguishing product formulations that address distinct assay‑termination mechanisms. Chemical quenchers, typically acidic or high‑ionic‑strength reagents, dominate the portfolio, capturing approximately 40% of market value due to their broad compatibility and low cost. Enzyme inhibitors, such as protease or phosphatase blockers, contribute about 30% as they preserve antigen–antibody complexes for downstream analysis, a requirement in multiplexed or kinetic ELISAs. Buffer‑based stop solutions, engineered to maintain pH stability while halting enzymatic activity, hold a 20% share, favored in high‑throughput settings where assay reproducibility is paramount. Finally, dual‑function stop/preserve solutions, which both terminate the reaction and stabilize the signal for extended storage, occupy the remaining 10%, appealing to laboratories with delayed readout schedules. Understanding these type‑based segments clarifies how product innovation and pricing strategies influence overall market size.