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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4.2 ★★★★★
Based on 14 reviews
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Sarah
Carnegie, US
★★★★★ 5
Bully approved
If he wants something to gnaw on he will sit with it but he doesn't really play with it. Which is probably the point. It's lasted. The ends are the most chewed. Overall great for a chewer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
K
Verified Purchase
KenH
Waukegan, US
★★★★★ 5
Surprisingly Durable
Color: Green
Our dog is an aggressive chewer. She has destroyed other toys meant for "aggressive chewers" in less that 6 hours. This toy has lasted 17 days and it's still going. It does have areas were the seam has given way and a very small amount of stuffing has come out. She has "killed" the squeaker. But the toy is still usable. We just played Tug of War this morning. It will not last forever. It is showing it's "age". But the durability is there. I am ordering more.
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Reviewed in the United States on March 18, 2026
M
Verified Purchase
Matt
Louisville, US
★★★★★ 4
Okay for the money
Color: Green
Kind of durable. My dog loved it tho. Lots of tugs. But also lot of stuffing everywhere
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Reviewed in the United States on May 24, 2026
B
Verified Purchase
Barbara Herges
San Leandro, US
★★★★★ 3
Durability and lasting period of toy.
Color: Green
I got this toy for our bulldog. He had a hole in it, which will only progress, within minutes. I took it away until I could find out if there is any kind of warranty. The information says this toy is not for aggressive chewers, yet right in the description and the photo of the toy (that way I knew I was looking at the correct toy), it says for the "aggressive chewer". I am disappointed that even though it isn't how they described, it only lasted minutes before there was damage. Not sure if I would buy another product.
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Reviewed in the United States on December 28, 2025
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Verified Purchase
LaJune
Houston, US
★★★★★ 5
Excellent toy for active dogs! Five ⭐️
Color: Green
⭐⭐⭐⭐⭐ Excellent Toy for Active Dogs! This is my second time purchasing this toy, and it absolutely deserves five stars. My youngest dog, Captain, is a very active 3-year-old with more energy than I can keep up with. He loves being able to sink his teeth into this squeaky toy, and it helps keep him mentally stimulated and entertained. What I love most is that he also shares it with his older brother, Kane. They use it for tug-of-war, which helps burn off some of Captain’s endless energy and keeps both dogs engaged. It does a great job reducing boredom, especially for highly active dogs. The first one lasted several months before needing replacement, which is impressive considering how much it was used. If you have energetic dogs that need something durable and fun, I highly recommend this toy!
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Reviewed in the United States on May 31, 2026

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