循環水浴和油浴適用於外循環。可將樣品直接置於水浴槽中進行恒溫試驗。水浴槽體採用全不銹鋼材質，接泵介面可以用於外循環。所有型號都帶有過溫保護和低液位保護系統，安全等級符合III級/FL可使用可燃性液體 (符合DIN 12876標準)。強有力的壓力泵和吸收泵保證外循環最佳的熱傳遞性能。溫度可升至200到300度，適用於外循環。

   Bath & circulation thermostats are suitable for temperature control of externally connected applications. There is furthermore the option to insert objects like samples, sensors, etc. directly into the open thermostat bath. The devices are fitted with long-life bath vessels made out of high quality stainless steel and have pump connections on the rear as standard. All models are fitted with an overtemperature and low level protection system according to safety class III/FL (DIN 12876) for use with flammable fluids. A powerful pressure-suction pump ensures optimal heat transfer to external attached applications.