SKU: 20669751865

Julabo FL Series Strong Recirculating Coolers

Sale price$8631.00 Regular price$9590.00
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Description

Julabo FL Series Strong Recirculating CoolersOverview The FL series offers a new generation of chillers for routine cooling applications within the laboratory and industry. The temperature stability of the PID control is 0. 5C. All units can easily be cleaned and are provided with a splash water proof keypad with LED temperature indication. On the front of the units there is an RS232 interface as well as an alarm shutdown. The filling port is easily accessible placed on the top under a lift up

Overview

The FL series offers a new generation of chillers for routine cooling applications within the laboratory and industry. The temperature stability of the PID control is ±0.5°C. All units can easily be cleaned and are provided with a splash water proof keypad with LED temperature indication. On the front of the units there is an RS232 interface as well as an alarm shutdown. The filling port is easily accessible placed on the top under a lift-up cover. Another hinged tray serves as a file for the operating manual or other documents concerning the installation. The removable venting grid allows an easy cleaning of the condenser, the drain tap is easily accessible behind the grid. All models include an easily visible level indication. Another advantage is the venting slots are on the front and rear and therefore the units can be placed directly one beside the other (space saving).

Features:

• Ergonomic design and easy operation
• Splash-proof keypad with integrated mains switch
• Large, bright LED display
• Reliable Microprocessor PID temperature control
• Filling level indicator
• Powerful immersion pumps, suitable for continuous operation
• Permissible temperature in return line +80°C
• Easy filling from the top with hinged protective lid
• Low liquid level protection with optical and audible alarm signal
• Integrated stainless steel bath tanks
• Removable venting grid for cleaning of the condenser
• Front drain
• No side vents
• RS232 interface for PC-connection
• IP class according to IEC 60529: 21
• Alarm output, potential-free change-over contact (max. 30 VA)
• Pressure Indicator
• By-pass valve to adjust pump pressure

FLW2503, FLW2506, FLW4003, and FLW4006 models are Water Cooled compressor models.

Key Attributes 
Type Chillers
Incubation No
Refrigeration Yes
Temp Range (°C) -20 to 40
Capacity (L) 24 to 30
Circulation External Only
Brand Julabo
MaxFlow Rate (l/min) 40, 60
Temp Stability (°C) ±0.5°C
Timer No
Alarms Yes
Digital or Mechanical Digital
Data connection Yes
Tank Material Stainless Steel
Sample Agitation No
Media Racks Available No
Warranty (years) 1
Weight (lb) 271
Width (in) 23.6
Depth (in) 29.9
Height (in) 45.3

 

Manufacturer Specifications

 

FL2503 and FL4003 include 2 barbed fittings for tubing 3/4" inner dia. (pump connections G3/4" male)
FL2506 and FL4006 include 2 barbed fittings for tubing 1" inner dia. (pump connections G1 1/4" male)
FLW2503 and FLW4006 include 2 barbed fittings for tubing 3/4" inner dia. (pump connections G3/4" male). Cooling water connection G 3/4" male with barbed fittings for tubing 1/2" inner dia.
FLW2506 and FLW4006 include 2 barbed fittings for tubing 1" inner dia. (pump connections G1 1/4" male). Cooling water connection G 3/4" male with barbed fittings for tubing 1/2" inner dia.

FAQ

Do the FL Series chillers have any means for temperature feedback and control of cooling?

There is no such functionality built in, but the FL Series chillers do have an RS232 connection, so you can control operation with a PC. If you also had a temperature sensor connected to the PC, you could program a sort of feedback mechanism that would control the cooling.

Unless you have a program allowing you to easily manage equipment via RS232, it's not a particularly simple task and would require the appropriate coding capabilities.

 

Can I run a Strong FL Series Recirculating Cooler continuously under maximum load?

Yes. Julabo chillers are designed for maximum operation at maximum load specifications. However, be very certain of the cooling power requirements such that you are not overloading the chiller. In a stressful situation such as continuous operation, overloading the chiller could damage the condenser and render the chiller useless. Also, for air-cooled models, operating the chiller in a hot environment or a dirty / dusty environment could decrease the efficiency of the chiller, so if operating at or near maximum load be sure that the chiller is in a cool, clean environment.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20669751865

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Bri M.
Port Orchard, US
★★★★★ 5
Flat Plug = Game Changer
Size: 6 Ft(2 prong plug), Color: Black
This is exactly what I needed to clean up my space. The flat plug sits flush against the wall, the long cord gives flexibility, and having multiple outlets + USB ports keeps everything in one place without the mess. It’s a 3 to 2 plug for homes that the electrical hasn’t been updated to 3 prong plugs. It feels solid, not cheap, and the surge protection adds that extra peace of mind. Perfect for a clean, organized setup that actually works.
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Reviewed in the United States on April 24, 2026
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Max Cat
Charlottesville, US
★★★★★ 5
Durable and well made
Size: 6 Ft, Color: White
Been using for over a year for a plug behind the fridge. Works well, reliable.
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Reviewed in the United States on May 27, 2026
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Allen Jennings
Charlottesville, US
★★★★★ 5
Good product
Size: 6 Ft, Color: Black
Works perfect, good price and quality. Would buy again.
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Reviewed in the United States on April 23, 2026
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J.M.Hunter
Birmingham, US
★★★★★ 5
Useable and pleasant looking
Size: 6 Ft, Color: Black
There's probably not a lot you can say about power strips because they all just do what they're supposed to do. However I needed something that would give me more power Outlets in the small bathroom sink counter space than I had. I tried several of the ones that I had but they either turned out too bulky, thick cords or just too intrusive for what I needed. That's when I came across this little gem. It comes with six Outlets, three USB inserts, and a smaller less thick power cord, and the end has a 30 degree flat angle so that it lays flat against the wall when plugged in instead of sticking straight out like most cords. Most importantly to me was it fit snuggly behind the sink faucet and tightly against the wall. All and all it made the entire application look as built in as possible. I know this seems as if a lot to say about a simple power strip but I've seem other bathroom counter sink tops cluttered with all sorts of electrical devices vying for their own plug in space and I don't need to tell you what that looks like. This is just a simple little power strip that was able to turn a messy looking counter top into a lot less intrusive looking mess.
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Reviewed in the United States on February 26, 2026
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Nate
Belleville, US
★★★★★ 4
It’s a power strip
Size: 6 Ft-2 Pack, Color: Black
Works fine plug seams a bit thin but we will see
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Reviewed in the United States on January 15, 2026

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