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Description
Julabo CF Cryo-Compact Circulators 5.5 LiterOverview The new CF series offers compact refrigerated heating circulators. With small overall dimensions the units can even be placed on a very small surface or within a complex installation. All models offer a heating capacity of 2 kW and safety class 3 according to DIN12876 1. The maximum ambient temperature of +40C as well as ventilation air cooling allow installing the units very closely side by side with other units or directly under a fume
Overview
The new CF series offers compact refrigerated/heating circulators. With small overall dimensions the units can even be placed on a very small surface or within a complex installation. All models offer a heating capacity of 2 kW and safety class 3 according to DIN12876-1. The maximum ambient temperature of +40°C as well as ventilation air cooling allow installing the units very closely side by side with other units or directly under a fume hood. Furthermore all the models feature pump connections for external temperature applications and a bath opening for temperature control of small objects directly in the circulator bath. Wetted parts are made of high quality stainless steel or plastic. The instruments provide reliable Microprocessor electronics with high temperature stability as well as warning and safety functions.
Features:
- Ergonomic design and easy operation
- Small overall dimensions for lowest space requirement
- Splash-proof keypad
- RS232 interface for PC connection
- Adjustable high temperature cut-off
- Classification 3 according to DIN12876-1
- Pump connections for external temperature applications
- Bath opening for temperature control of small objects in the bath
- Front drain
High-tech model offers additional features that allow more precise control than economy models:
- Bright VFD display and additional interactive LCD dialog display of 3 values,warning functions, high
temperature cut-off, pump stages (resolution 0.01 °C)
- Highly precise 'Intelligent Cascade Control', automatic and self optimizing adjustment of PID control parameters
- TCF Temperature Control Features for individual optimization, additional settings for band limit, limits etc
- Absolute temperature Calibration for manual compensation of a temperature difference, 3-point calibration
- Electronically adjustable pump stages for reliable and consistent pump capacity
- Integrated programmer for the execution of time and temperature dependent profiles, 6 temp profiles with 60 steps max., with real time clock
- External Pt100 sensor connection for precise measurement
- Early warning system for low liquid level for maximum safety and for high/low temperature limits
- 3-point calibration
- RS232/RS485 interface for PC connection
Key Attributes
| Type | Stirred / Circulating Baths |
| Incubation | Yes |
| Refrigeration | Yes |
| Temp Range (°C) | Ambient -40 to 200 |
| Capacity (L) | 5.5 |
| Circulation | Internal & External |
| Brand | Julabo |
| MaxFlow Rate (l/min) | 15, 22-26 |
| Temp Stability (°C) | ±0.03, ±0.02 |
| Timer | Yes |
| 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) | 92 |
| Width (in) | 11 |
| Depth (in) | 18.1 |
| Height (in) | 18.1 |
Manufacturer Specifications
| Model No. | CF40 | CF41 |
| Model series | Economy | HighTech |
| Model # | CF40 | CF41 |
| Working temperature range (°C) | -40 ... +150 | -40 ... +200 |
| Temperature stability (°C) | ±0.03 | ±0.02 |
| Setting / display resolution | 0.1 °C | 0.01 °C |
| Integrated programmer | N/A | 6x60 steps |
| Temperature Display | LED | VFD , LCD |
| Heating capacity (kW) | 1 | 1 |
| Cooling capacity (Medium Ethanol)°C | 20, 0, -20 | 20, 0, -20 |
| Cooling capacity (Medium Ethanol) kW | 0.47, 0.4, 0.28 | 0.47, 0.4, 0.28 |
| Pump capacity flow rate (l/min) | 15 | 22-26 |
| Pump capacity flow pressure (psi) | 5.1 | 5.8-10.2 |
| Pump capacity flow suction (psi) | N/A | 2.9-5.8 |
| Bath opening / bath depth (W x L / D inch) | 7.5 x 1.2 / 7.5 | 7.5 x 1.2 / 7.5 |
| Pump connections | M16x1 | M16x1 |
| Barbed fittings diameter (inner dia. / mm) | 8 / 12 | 8 / 12 |
| Filling volume (liters) | 5.5 | 5.5 |
| Refrigerant | R404A | R404A |
| External Pt100 sensor connection | N/A | integrated |
| Digital interfaces | RS232, Optional Profibus | RS232, RS 485, Optional Profibus |
| Ambient temperature | 5...40 °C | 5...40 °C |
| Dimensions W x L x H (inch) | 11 x 18.1 x 18.1 | 11 x 18.1 x 18.1 |
| Weight (LBS) | 90 | 92 |
| Classification according to DIN12876-1 | Classification III (FL) | Classification III (FL) |
| Included with each unit | 2 each barbed fittings for tubing 8 and 12 mm inner dia. (pump connections M16x1 female). | 2 each barbed fittings for tubing 8 and 12 mm inner dia. (pump connections M16x1 female). |
| Cooling of compressor | Air | Air |
| Power requirement V / Hz / A | 115/60/16 | 115/60/16 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Everybody loved the high-tech style and amazing functionality
Color: Black/Yellow
I'm not a Timex fanboy, and I've had my fair share of problems with the Expedition line, so this review is my honest opinion as a man who's worn Armitrons and Timexes since I was 10.
I remember in 1992 when the Timex Ironman Triathlon with Indiglo was first launched - My older brother got one, then me and my neighbor friends. Everybody loved the high-tech style and amazing functionality. Even Bill Clinton was rock'n this watch, for those who don't remember.
Quite simply, this is the perfect watch at a great price, in my opinion. Perfect as a gift for any man, and I think the original black/olive drab/yellow coloration is still the coolest. In this day and age of smartphones, it still pays to have this watch. The alarm is less annoying sounding than a cellphone, and doesn't wake up the entire house. To turn it off, just tap the watch, no more reaching for the phone or alarm clock. Timer comes in handy for anything; timing my kids' timeouts when they get in trouble, 15 minutes room clean-up times, etc. Chrono is fun for anything you wanna use a stop-watch for. I set the second time zone for Vietnam time. It really is a million times easier to use this watch for all of its functions than reaching for a smartphone or alarm clock, etc. If you;ve been relying on your phone for a few years as a watch/chronograph/timer/alarm - you'll be so glad you finally got a watch like this.
I've never tried a smart-watch, however I feel those are not as necessary,durable or practical as a real watch. Other Timex watches I've used were freakin' trash - couldn't throw em away fast enough. Might as well open the box while holding it over a trash can, so the watch can fall right in when you open the box. That's my experience with the Expedition line-up.
Back to this watch: The only thing I wish this watch could do is measure activity thermogenesis (calories expended throught the day) or work as a pedometer, which some smart-watches and other devices can do. I also cannott decide if I like this new, slightly larger, heavier/thicker design of the Ironman Triathlon over the 1990s design. The 90s models styling was "tight to death'. Star-split buttons were seperated. The mode button was yellow. Overall more compact and bi-cultural;by that I mean it looked great as an athletic watch or a politician, business man wathc. This new model is bigger, better ingress/shock resistance, and more of an athletic style over all, and is a little less colorful.
I almost went with the G-shocks, but they still just look like crap and are waay to expensive. Sure, they have some better features, can survive WWIII, but I am a traveler. I need a watch that can work in the dark in any environment. The G-shocks are often using some kind of solar battery crap and rely on cathing a signal from an American automic clock in Colorado - good luck with that while your in Thailand on vacation.
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Reviewed in the United States on December 31, 2016
★★★★★ 5
Great Product. Easy to use.
Color: Black
This is the third running watch I've had and it's my first Timex. I've owned to Casio's before (one being a g-shock), but after finding my g-shock to bulky and cluttered, and loosing my other Casio I picked up from Walmart, I decided to look around to find a new durable running watch.
I run cross country and track so going from a generic stopwatch to a 30-lap chrono watch has been sweet. The lap timer is easy to use and the display is big enough to take a glance and see my split and total time side by side. The recall feature works perfectly and you even have some room to adjust the settings to configure your lap display how you like it.
My favorite thing about this Timex, is its ease of use. The only time I've had to look at a manual is when I first got the watch. The display updates as you go through the various modes to show you what the new buttons mean so there is never a question on how to set the time or recall your laps.
This watch is extremely durable. It has already taken a few shots and I've swam with it on several times. The screen and body have held up nicely and I don't foresee any problems with them in the future. The strap is great also. I really like the notch that keeps the excess strap in place.
The countdown timer and the alarm both work as expected. The timer has some different settings and is easy to set up. My only disappointment with the timer was that you can't set different intervals. Like if you want to run for five minutes and walk for two your going to have to invest a little more for a watch that allows different intervals. The alarm works well too, and the beeping successfully wakes me up in the morning, but I'm not a heavy sleeper so some may find it too quiet.
Overall this watch is durable, easy to use, and can track splits really well. The watch is a little bulky if you are used to a more minimalist watch but for me the weight was perfect, and for the price you can't go wrong with this watch.
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Reviewed in the United States on June 5, 2013
★★★★★ 4
Trusted Brand Delivers Again
Color: Black/Yellow
I had my previous Timex watch for 30+ years and it finally died after getting wet, so I replaced it with the closest model I could find to it.
PROS:
- Has the basic functions I needed: Clock, 2nd Time Zone Clock, IndiGlo backlighting, Alarm, Timer, Stopwatch. Allows me to leave phone at home and just take this out.
- Easy to set time/date/etc. Can turn alarm on / off easily. Buttons for timer/mode switching work fine.
- Clear display so easy to read. The backlighting makes this even better.
- Can swap out the band (I put mine on a Chums' "The Band" that I like) if the new one takes 19mm pins.
CONS:
- The only thing I dislike is it is heavier than my old Timex. A little bulkier too. Not annoyingly so but noticeable enough for me to comment on it here.
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Reviewed in the United States on October 20, 2025
★★★★★ 5
Great Timex Watch
Color: Black/Yellow
This Timex Ironman watch arrived on time and is of great quality. I have used these watches for years and have NO complaints about their longevity, accuracy, or dependability. I will definitely purchase again if needed.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Item as described.
Color: Dark Blue
A timeless tradition of a great design and useful watch. Have been using this watch design for over a 30 years.
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Reviewed in the United States on May 27, 2026