Lab Procurement Services offers a comprehensive range of high-quality, affordable constant temperature equipment to handle a variety of applications.  Please see individual categories for

As well as the Parts and Accessories sections.  Our experts are here to help with product selection and quotations - give us a call, or set up a meeting!

Before ordering, check the temperature range against your method: the digital water baths here cover ambient +5° to 99°C, while refrigerated circulators reach -30°C at the low end and up to 170°C at the high end. Compare bath volume, and for chillers the cooling capacity (in kW or HP) and pump type, since the DuraChill CA chillers are listed with either a turbine or a positive displacement pump. Confirm voltage and frequency (120V 60Hz, 208-240V or 230V). Plan for the bath fluid too, such as polycool glycol mixes for below-ambient work and algae inhibitor for water baths, plus the fittings, lids and bypass kits your setup needs.

Constant Temperature: common questions

What is constant temperature equipment?

Constant temperature equipment holds samples, vessels or connected instruments at a set temperature. It includes water and bead baths, heated and refrigerated circulators, recirculating chillers, immersion coolers, general-purpose, CO2 and shaking incubators, humidity test chambers and plant growth chambers. The right choice depends on temperature range, stability, capacity, and whether you need to heat, cool or both.

What is the difference between a circulator and a chiller?

A circulator has a bath with a heater, often refrigeration, and a pump that can control the bath itself or circulate fluid through external equipment. A recirculating chiller is mainly built to remove heat, supplying cooled fluid to equipment such as rotary evaporators, condensers or lasers. Chillers typically focus on cooling capacity, while circulators offer wider temperature ranges and their own working bath.

What fluid should I use in a lab bath or circulator?

Distilled or deionized water is commonly used for moderate temperatures, often with an algae inhibitor to keep the bath clean. For temperatures near or below freezing, a water and glycol mix is typical, and specialty fluids or oils are used at higher temperatures. Use a fluid rated for your full operating range and approved by the equipment manufacturer.

Can I get a quote on a chiller or incubator?

Yes. Volume and quote pricing is available through the Contact Us page, and approved business accounts can pay by purchase order. Larger equipment often ships directly from the manufacturer, so lead times vary by item. Include the model, voltage and quantity in your request so the quote matches what you need.

Constant Temperature

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  1. Immersion Probe Cooler, IP-100, 0.625” Ø Flexible Cold Finger Probe, (-100° to -60°C), 240V, 50Hz
    Manufacturer: Polyscience Corp
    Key Features: Continuous cooling to temperatures as low as -100°C Designed to run at maximum cooling An economical alternative to dry ice or liquid nitrogen Excellent for trapping applications, freeze drying, and rapidly cooling small volumes of liquids (1 per EA)
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    was $9,610.50 Special Price $9,014.66
  2. WATER BATH, 23 Liter, Digital, 115V
    Manufacturer: Sheldon Manufacturing
    Weight:42 lbs Agency Approval:TUV-CUE Temperature Control:Microprocessor Temperature Uniformity:+/-0.2°C (at 37°C) Temperature Range:Ambient +5°C to 80°C Exterior Dimensions WxDxH in. (cm):15 x 25.3 x 9 (38.1 x 64.2 x 22.9) Interior Dimensions WxDxH in. (cm):11.5 x 19.5 x 6.2 (29.2 x 49.5 x 15.8) Capacity:23 L Maximum Energy Consumption (W):600/840 All specifications are determined by using average values on standard equipment at an ambient temperature of (22 ± 3)°C and line voltages within +/-10% of unit type (115V/230V). Temperature specifications follow DIN 12880 methodology. We reserve the right to change specifications at any time. (1 per EA)
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    $1,274.00
  3. Water Chiller H50-500 115V, EA /1
    Manufacturer: LabTech
    Water Chiller H50-500 115V (1 per EA)
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    $2,227.68
  4. Histology Freeze Plate (Fixed at -34.4°C), 120V, 60Hz
    Manufacturer: Polyscience Corp
    Key Features: Ultra-cold surface freezes samples quickly, reduces overall processing time by 40% or more 136 in² (877 cm²) freezing surface accommodates multiple specimens simultaneously (1 per EA)
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    was $3,150.00 Special Price $2,954.70
  5. Bypass Kit, replacement, Buna N tubing, 1/2” ID x 6” with spring and insulation
    Manufacturer: Polyscience Corp
    Bypass Kit, replacement, Buna N tubing, 1/2in. ID x 6in. with spring and insulation EA /1 (1 per EA)
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    $19.25
  6. Water Bath, 2L Digital, (Ambient +5° to 99°C), 240V, 50/60Hz
    Manufacturer: Polyscience Corp
    Key Features: Displays actual and set point temperature simultaneously Programmable pre-sets for frequently used temperatures Integrated timer Hinged gable cover Calibration off-set feature Reservoir sizes from 2 to 28 liters Reservoir made of 304 Stainless Steel Reservoir drain (10 liter and larger baths) Primary and automatic safety thermostats Also compatible with waterless bath beads All 220-240V units are compatible with both 50Hz and 60Hz electrical systems (1 per EA )
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    was $657.00 Special Price $616.27
  7. Immersion Probe Cooler, IP-100, 0.7” Ø Rigid Cold Finger Probe, (-100° to -60°C), 240V, 50Hz
    Manufacturer: Polyscience Corp
    Key Features: Continuous cooling to temperatures as low as -100°C Designed to run at maximum cooling An economical alternative to dry ice or liquid nitrogen Excellent for trapping applications, freeze drying, and rapidly cooling small volumes of liquids (1 per EA)
    Learn More
    was $9,610.50 Special Price $9,014.66
  8. 5 micron Sediment Filter, PK/2
    Manufacturer: Polyscience Corp
    5 micron Sediment Filter, PK/2 (2 per PK )
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    was $35.00 Special Price $33.72
  9. Fitting, 1/2” (13 mm) barb x 3/8” (9.5 mm) barb, glass filled nylon (for MX Controllers)
    Manufacturer: Polyscience Corp
    Fitting, 1/2in., 13 mm barb x 3/8in., 9.5 mm barb, glass filled nylon, for MX Controllers EA /1 (1 per EA)
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    $5.51
  10. IST-3075 Incubated Shaker(53L), 120V, 60Hz
    Manufacturer: Jeio Tech
    IST-3075 Benchtop Incubating Shaker,, 17.3 x 30.9 x 20.1, L, cu ft, 2015 New Product, replaces SI-300, Category=Incubator, 120V, 60Hz (1 per EA)
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    $7,009.00
  11. Heated Circulator, 15L, Standard Digital (Ambient +10° to 170°C), 240V, 50Hz
    Manufacturer: Polyscience Corp
    Key Features: Large, universal icon and English display Swivel 180™ Rotating Controller On-board connectivity: RS-232 serial output On-screen prompts Automatic performance optimization Single-point calibration capabilit (1 per EA)
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    was $3,198.00 Special Price $2,999.72
  12. IL3-15A Low Temperature Incubator including RS-232 interface and software, 120V, 60Hz
    Manufacturer: Jeio Tech
    Specially designed for optimal temperature control as well as minimal sample contamination caused by external air intrusion. (1 per EA)
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    $7,201.00
  13. WATER BATH, 7 Liter, Digital, 115V
    SKU: SWB7-EA
    Manufacturer: Sheldon Manufacturing
    Weight:19 lbs Agency Approval:TUV-CUE Temperature Control:Microprocessor Temperature Uniformity:+/-0.2°C (at 37°C) Temperature Range:Ambient +5°C to 80°C Exterior Dimensions WxDxH in. (cm):15.3 x 12 x 9 (38.8 x 30.5 x 22.9) - Cover Adds 3.5 in. to Height Interior Dimensions WxDxH in. (cm):11.7 x 6 x 6 (29.8 x 15.2 x 15.2) Capacity:7 L Maximum Energy Consumption (W):360/480 All specifications are determined by using average values on standard equipment at an ambient temperature of (22 ± 3)°C and line voltages within +/-10% of unit type (115V/230V). Temperature specifications follow DIN 12880 methodology. We reserve the right to change specifications at any time. (1 per EA)
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    $898.00
  14. ILP-12 Personal Low Temperature incubator(48L), 120V, 60Hz
    Manufacturer: Jeio Tech
    ILP-12 Personal Low Temp incubator 120V, 60Hz, 108lbs, 17 x 26.2 x 24.4, 48L, 1.7cu ft, Category=Incubator, 120V, 60Hz (1 per EA)
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    $6,377.00
  15. Water Bath, 5L Digital, (Ambient +5° to 99°C), 240V, 50/60Hz
    Manufacturer: Polyscience Corp
    Key Features: Displays actual and set point temperature simultaneously Programmable pre-sets for frequently used temperatures Integrated timer Hinged gable cover Calibration off-set feature Reservoir sizes from 2 to 28 liters Reservoir made of 304 Stainless Steel Reservoir drain (10 liter and larger baths) Primary and automatic safety thermostats Also compatible with waterless bath beads All 220-240V units are compatible with both 50Hz and 60Hz electrical systems (1 per EA )
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    was $792.50 Special Price $743.37
  16. Single Window Roll-in Incubator, 230V
    Manufacturer: Bellco Glass Inc
    Bellco Roll-In Incubators have 40 cubic feet of volume and are designed for use with Bellco’s Cell Production Roller Apparatus (CPRA). The flush-to-floor design allows easy movement of the CPRA in and out of the chamber. Four internal convenience outlets allow simple connection to internally placed appliances such as CPRA, Roller Drums, Magnetic Stirrers, etc. Fans take air from the chamber top, pass it over the 1100 watt heater and re-inject it into the chamber on the bottom back wall. A microprocessor temperature controller and membrane keypad allows simple setting and monitoring of chamber temperature. A safety thermostat is included to prevent over-temperature failures. Shelf brackets are included for mounting of optional shelves. The control panel features indicating lights and dials for automatic control of temperature. (1 per EA )
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    $11,905.81
  17. Immersion Probe Cooler, IP-100, 3” Ø Rigid Coil Probe, (-100° to -60°C), 240V, 50Hz
    Manufacturer: Polyscience Corp
    Key Features: Continuous cooling to temperatures as low as -100°C Designed to run at maximum cooling An economical alternative to dry ice or liquid nitrogen Excellent for trapping applications, freeze drying, and rapidly cooling small volumes of liquids (1 per EA)
    Learn More
    was $9,610.50 Special Price $9,014.66
  18. Refrigerated Circulator, 15L, Advanced Digital (-30° to 200°C), 240V, 50Hz
    Manufacturer: Polyscience Corp
    PolyScience Circulating Baths are as precise as they are reliable. Every product comes equipped with innovative proprietary features, from the quiet, energy-efficient heat removal of our WhisperCool™ Environmental Control System to the fast-acting temperature control of Cool Command™ Technology. Our Circulating Baths are easy to use, offering interface controller flexibility, clear navigational buttons and menu prompts, ergonomic design for easy repositioning and simple fluid connections. These hard-working machines were designed to make your life easier and more productive. (1 per EA)
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    was $7,099.50 Special Price $6,659.34
  19. CO2 INCUBATOR, AIR JACKET (Direct Heat), 5 CU FT, IR, HEPA, 115V
    Manufacturer: Sheldon Manufacturing
    Weight:250 lbs Overtemperature Alarm:Yes Access Port:1.45 inches Shelving:3 Supplied (8 Maximum) Relative Humidity Range:up to 95% Jacket Type:Air CO2 Recovery Rate:< 5 minutes CO2 Sensor:IR CO2 Range:0-20% Agency Approval:TUV Temperature Uniformity:+/-0.25°C at 37°C Temperature Range:Ambient +8°C to 60°C Exterior Dimensions WxDxH in. (cm):27.3 x 28.5 x 37.8 (69.3 x 72.4 x 96.0) Interior Dimensions WxDxH in. (cm):20.5 x 19.7 x 21.5 (52.1 x 50.0 x 54.6) Capacity:5 Cu.Ft. (142 L) Maximum Energy Consumption (W):720 Split Inner Glass Chamber Door:Optional Data Logging Capabilities:Yes All specifications are determined by using average values on standard equipment at an ambient temperature of (22 ± 3)°C and line voltages within +/-10% of unit type (115V/230V). Temperature specifications follow DIN 12880 methodology. We reserve the right to change specifications at any time. (1 per EA)
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    $7,914.00
  20. Heated Circulator, 15L, Advanced Programmable (Ambient +10° to 200°C), 120V, 60Hz
    Manufacturer: Polyscience Corp
    PolyScience Circulating Baths are as precise as they are reliable. Every product comes equipped with innovative proprietary features, from the quiet, energy-efficient heat removal of our WhisperCool™ Environmental Control System to the fast-acting temperature control of Cool Command™ Technology. Our Circulating Baths are easy to use, offering interface controller flexibility, clear navigational buttons and menu prompts, ergonomic design for easy repositioning and simple fluid connections. These hard-working machines were designed to make your life easier and more productive. (1 per EA)
    Learn More
    was $4,797.75 Special Price $4,500.29
  21. Single Window Mini-Refrigerated Incubator, 115V
    Manufacturer: Bellco Glass Inc
    The Bellco Mini Refrigerated Roll-In Incubator has 21 cubic feet of volume and is designed for use with Bellco’s Cell Production Roller Apparatus (CPRA) up to 2 decks high. The flush-to-floor design allows easy movement of the CPRA in and out of the chamber. Two internal convenience outlets allow simple connection for internally placed appliances such as CPRA, Roller Drums, Magnetic Stirrers, etc. Shelf brackets are included for mounting optional shelves to hold these appliances. Fans take air from the chamber top, pass it over the 1100 watt heater and inject it into the chamber on the bottom back wall. When the refrigeration mode is active, the air is cooled using a thermoelectric cooler. A microprocessor temperature controller and membrane keypad allows simple setting and monitoring of chamber temperature. The control panel contains indicator lights and dials for controlling temperature. A safety thermostat is included to prevent over-temperature failures. The unit is not intended for use with CO2 environments. (1 per EA )
    Learn More
    $15,844.00
  22. Climacell EVO 707 (25 ft3) Photostability, Stability Chamber
    Manufacturer: BMT USA
    Climacell EVO 707 (25 ft3) Photostability, Stability Chamber (1 per EA )
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    was $48,523.10 Special Price $46,628.76
  23. BeadBath Duo, 10L bath, 115V
    Manufacturer: Benchmark Scientific
    The BeadBath Duo series are the first laboratory baths designed for precision temperature control when used with water, or with (the increasingly popular) Lab Armor® thermal beads. Unlike any other laboratory bath, they feature a “MODE” button that can be (1 per EA)
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    was $1,474.99 Special Price $1,316.43
  24. Solid Plug for calibration bath lid, Viton®
    Manufacturer: Polyscience Corp
    Solid Plug for calibration bath lid, Viton EA /1 (1 per EA)
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    $15.00
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