恒温

1. Origins, structure, and basic meaning

• Structure: 恒温(こうおん) is a noun for the condition of maintaining a constant temperature.
• Basic usage: Keeping samples at that condition appears in 試料を恒温に保つ, while a constant-temperature bath is 恒温槽.

2. Common pitfalls and similar expressions

• Condition and apparatus
  • 恒温 is the constant-temperature condition, while 恒温槽 is a bath or apparatus made to maintain it.
• Particle for the resulting state
  • The form 恒温に保つ uses に to mark the state in which the samples are kept.