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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4.1 ★★★★★
Based on 23 reviews
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Robyn Kanouse
Omaha, US
★★★★★ 5
Very durable
Color: Blue
I have never written a review but just have to say how much our Pitbull LOVES this toy. It is very sturdy very good since he is such an aggressive chewer. This is only the second product I have found that he can’t destroy in 5 minutes. It keeps him busy for a long time and plays with it long after the treats are gone which is good as too many treats and he would gain weight. Highly recommend it. He weighes 70 lbs and the largest one is the perfect size. Kibble doesn’t work as it empties out immediately. I use Beggin Strips cut to size just to fit in the hole—they will come out but not all at once and survive his chewing on the toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
L
Verified Purchase
Love for Design
Dallas, US
★★★★★ 5
Great you made super well
Color: Blue Lil Snoop, Color: Blue Lil Snoop
This is such an awesome toy. It’s super durable strong bounces and a perfect size. We got the small. We got blue because our pup can see it. It allows for creativity and endless limits to what you can make for it to be a fun experience. It has a nice sized hole in the center which allows you to add treats and food. Pop it inward and it slightly if large enough prevents the treats from coming out super fast. The ball rolls bounces and they can grip it nicely. It is easy to clean The only thing I didn’t like was the way the plastic tabs were situated inside the toy as you just be careful you don’t allow it to drip inside and dog gets it. No noise just fun. Our 15lb Cavapoo loves it
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Reviewed in the United States on February 17, 2026
M
Verified Purchase
Michael E
Phoenix, US
★★★★★ 4
FUN AND DONE!
Color: Orange
First, I looove that I could get this dog toy in my favorite color! The orange color also helps to locate it, if your doggo has rolled it somewhere you don't know. This bowl toy is very durable, safe, and easy to pull open and fill. The only reason I don't give it 5 Stars is because the opening is so big, after it's closed, that unless you have pretty large pieces/treats in it, or jam-pack them in, they easily fall out, when my dog rolls the toy around. What I do, is put a whole Greenie in the bowl and then add treats around it. She's thrilled to have a treat or two spill out, as she rolls the bowl around. But what really keeps her occupied is trying to get to the Greenie. This is where the durability plays such a key role! Our dog is a Pit-Terrier and an extremely aggressive chewer, but the fold in the bowl is so strong that even her attempts to chew through it or claw it out don't work. That said, I would still supervise your dog's play with this. I know, if she really wanted to, our dog could eventually chew through the strong material to get to the Greenie, but thank goodness it's too thick and too wedged in to be worth all that time. The awkward shape of the bowl also makes it hard for her to grip it in her mouth foe chewing. For a dog's quick fun, amusement, and reward, this is a winner!!
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Reviewed in the United States on July 4, 2025
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 5
After two years pups still love this
Color: Blue Lil Snoop
My pups really love this ball and they spend a long time trying to get kibbles or freeze dried chicken. It’s been 2 years since purchase and it’s still in good shape. I highly recommend.
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Reviewed in the United States on June 9, 2026
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
Great for mental stimulation. Durable for my chewers!
Color: Purple Lil Snoop, Color: Purple Lil Snoop
Love these! Quality material, safe for dogs — I make my dogs home made freezer treats and fill these up with it, and serve. Keeps them busy for hours. It’s also fun for them to roll it around to get regular treats out of. Toy + treats = a very happy pup. This size I got for my puppy. The larger ones I use for my adult dogs. Super cute too, and silent! I have Mini Aussies, so it’s great mental stimulation for them. Tires them out.
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Reviewed in the United States on April 7, 2026

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