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Low Temperature Bath with Magnetic Stirrer using Natural Refrigerant Model PSL-1900

Enable precision control in cryogenic (-80°C) environment

Three Benefits of Natural Refrigerant Refrigeration

  1. Extremely Low Global Warming Potential (GWP)

  • Using the natural refrigerant R290 (propane) with a GWP of 3 and R170 (ethane) with a GWP of 6, this model achieves a 99.99% reduction in GWP compared to the conventional model (PSL-1820), contributing to the fight against global warming.

2. Regulatory Compliance and Reduced Administrative Burden

  • Not subject to the requirements of Japan’s Fluorocarbon Emission Control Law.
  • Eliminates the needs for management tasks, inspections, and the creation and retention of records for fluorocarbon-equipped products.
  • Eliminates the costs and hassle associated with the disposal of fluorocarbon- equipped products.

3. Superior Cooling Performance and Energy Efficiency

  • Reaches -80°C approximately 15 to 20 minutes faster than the previous models.
  • Once the target temperature is reached, precise and stable temperature control is maintained.

Maintains a uniform sample temperature with high precision

  • The solution in the bath is vigorously stirred by a powerful stirring, while the stirring bar in the reaction vessel also agitates the sample, ensuring precise and uniform sample temperature control.
  • Vacuum insulation is used for the bath to achieve exceptional thermal insulation performance.
  • A new insulation system enables continuous operation for the PSL-1900.
  • By using an insulated cover (optional), the cooled state can be maintained for up to 7 days.

More Stable Temperature Control than Dry Ice Cooling

  • While dry ice-acetone refrigerant allows for rapid cooling, the temperature is unstable.
  • The PSL-1900 takes time to reach -80°C, but its vacuum insulation effect maintains an extremely stable temperature.

Easy-to-Read, User-Friendly Control Panel

  • User-friendly operation panel with high visibility
  • Adopted a newly designed control panel

Compact Design for Installation Inside a Fume Hood

  • Compact design allows installation inside a fume hood.

Specifications

Product nameLow Temperature Bath with Magnetic Stirrer
ModelPSL-1900
Cat. No.287910
Temperature control range－80 to 0℃
Temperature control accuracyWithin ±1℃ (Center of bath)
Temperature controlHeater: PID control, Refrigerator: Continuous operation
Rotation speed range100 to 800rpm
Setting · displayMembrane keypad input digital setting · display
Timer functionAuto Start, Auto Stop
Safety featuresLeakage · overcurrent breaker, Independent overheat protector, refrigerator high-pressure switch, Overload relay retention circuit, Float switch, Self-diagnostic functions (heater disconnection, sensor error, upper/lower temperature limit alarm, SSR error, motor error, memory error, power failure alarm, low water level), Refrigerator protection timer
Other functionsUser adjustment mode (display temperature compensation, power failure recovery settings), Level adjuster
Temperature sensorPlatinum resistance thermometer Pt100Ω
Heater450W
MagnetNeodymium magnet
MotorSpeed control motor, output 25W
Stirring barTeflon® (20mm), 1 pc
Bath materialStainless steel
Bath sizes (mm)165 ID x 140H
Bath effective sizes (mm)125 ID x 82H
Bath capacity3L
Max. vessel diameter95mm diameter
Compatible vesselsPear shaped sample flask, Erlenmeyer flask, Round reaction vessel (maximum capacity 300mL), Small separable flask
Refrigerator · refrigerantAir-cooled, output 450W x 2 · R290 · R170
Operating ambient temperature5 to 35℃
Power input15A, 1.5kVA
Rated power supply100VAC 50/60Hz
Outer dimensions (mm)450 (464)W x 475D x 582H
Weight70kg
AccessoriesTeflon® stirring bar (20mm) 1 pc, Clamp (clamping diameter 20 to 85mm), Cover with shutter (variable diameter 10 to 150mm)

  • Performances are measured at a room temperature of 20°C, rated power supply voltage, 50Hz, and no load.
  • Dimensions in parentheses ( ) include projections.
  • Do not use any liquids other than water or ethanol. Ethanol is a flammable and combustible liquid; exercise extreme caution when using it.
  • Minimum cooling temperature is -78°C at an ambient temperature of 35°C.

Data

Cooling Curve

Options

Option Compatibility Chart

ProductCat. No.
Test tube holder
Enables synthesis using test tubes. Up to nine 10 to 18mm diameter test tubes can be accommodated.212300
2-port reaction vessel
2-port reaction vessel with a diameter of 60mm. Equipped with TS29/TS15 taper joints.203170
Insulated cover
(for continuous operation)
Prevents condensation and freezing on the cover with shutter and suppresses moisture absorption of the brine, maintaining a -80°C cryogenic environment.227220
Clamp set229320
Stirrer support rod229310
Small vessel clamp182760

Teflon® Powerful Stirring Bars

ProductModelOD x Length (mm)QTYCat. No.
Teflon® Powerful Stirring Bars
(Octagon)
TOX-16 8 x 15 1 284110
TOX-268 x 251 284120
TOX-36 8 x 381 284130
Teflon® Powerful Stirring Bars
(Oval)
TFX-15 6 x 15 1 200390
TFX-21 10 x 201 240320
TFX-25 10 x 25 1 200410
TFX-3515 x 35 1 200430
TFX-40 20 x 40 1 200440
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