JEOL and Bruker both sell NMR within broader scientific-instrument portfolios; neither is a pure-play NMR investment.
Japanese university and research-institute equipment lists show vendor clusters as well as coexistence. They support an installed-base analysis, not a national market-share estimate.
Switching can affect probes, pulse programs, processing software, staff training, service relationships and the comparability of historical spectra.
Bruker has the clearer visible position at the ultra-high-field frontier, while JEOL retains meaningful installations and service relationships in Japan.
Watch public research budgets, large-system order timing, service quality, software ecosystems and whether instrument demand converts into profitable recurring revenue.