Unstirred Water Bath (NB 9/20)

Apparently simple, NB series of unstirred water baths is nevertheless controlled by N-Prime™ microprocessor system giving excellent temperature precision, assisted by the triple insulation, for this class of instrument. N-Prime™ control system guarantees accurate temperature control and keeps samples at set temperature. Operated programs can be transferred to memory stick through USB port for traceability.

Most of the footprint of the water bath is usable to accept samples, since there is no pump, circulator or heater inside the chamber. A convenient drain permits fast discharge of the water. Their large displays are easily visible from across the laboratory.

Designed for many general and special applications in microbiology, research and industrial laboratories.




  • Two different useful volumes: 7 and 15 litres.
  • Temperature range: Ambient temperature + 5°C to 99,9°C.
  • Designed for many general and special applications in microbiology, research and industrial laboratories.
  • Excellent temperature control of liquid for uniform and stable temperatures.
  • Reliable and accurate N-Prime™ programmable PID microprocessor control system.
  • User friendly control panel including large bright LED displays for temperature and time.
  • Easy programming with one button, just turn and push.
  • Password protected menu to secure the operation.
  • Programmable alarm limits.
  • Data recording on memory stick by means of USB port up to 125 days.
  • Programmable delayed start function.
  • Safety thermostat to prevent running dry and audible and visual alarms against over heating.
  • Seamless corrosion resistant stainless steel tank for a longer life.
  • Minimized risk of contamination by the rounded corners and smooth surfaces of the tank.
  • Silicon sheet heaters surrounding the tank from three sides for uniform heating.
  • Triple insulation consisting of glass wool, aluminium layer and air gap for high efficiency.
  • Angled front panel to protect the controller from accidental water spillage.
  • Efficient tank usage as there is no obstruction in the tank such as circulation pump or heater.
  • Convenient drain for discharging the liquid in the tank quickly.
  • Footprint almost equal to the tank dimensions to save valuable bench space.
  • Optional Wi-Fi connection for N-Mobile™

Technical Specifications

  NB 9 NB 20
Tank Volume, litres 9,5 21
Useful Volume, litres 7 15
Temperature Range Ambient Temp + 5°C / 99,9°C
Temperature Sensor Fe-Const
Control System N-Prime™ Programmable Microprocessor
Temperature Set and Display Sensitivity 0,1°C
Temperature variation @37°C ± 0,2°C*
Temperature fluctuation @37°C ± 0,1°C*
Programmable Alarm Limits ± 0,5°C / 5°C
Timer 1 minute – 99,9 hours + Hold Position
Delayed Start Timer 1 minute – 99,9 hours
Selectable Recording Frequency on Memory Stick 1-999 minutes
Internal Material Stainless Steel
External Material Epoxy – Polyester Powder Coated Steel
Power Rating 800 W 1600 W
Power Supply 230 V, 50/60 Hz
Internal Dimension (WxDxH) mm 240x300x150 505x300x150
External Dimension (WxDxH) mm 325x400x275 590x405x275
Packing Dimension (WxDxH) mm 390x450x480 650x450x480
Net/Packed Weight Kg. 9/12 13/17

*At 22°C ambient temperature and closed lid