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Description
CORIO CD 39L Open Heating Bath CirculatorOverview CD B33 For internal and external temperature applications with transparent or stainless steel bath tanks and pump connections JULABO open heating bath circulators with bath tanks made of stainless steel are designed for internal and external temperature applications. They are primarily used for internal temperature control directly within the bath tank. External closed systems may be connected via the integrated pump connections. Models are
Overview
CD-B33 For internal and external temperature applications with transparent or stainless steel bath tanks and pump connections JULABO open heating bath circulators with bath tanks made of stainless steel are designed for internal and external temperature applications. They are primarily used for internal temperature control directly within the bath tank. External closed systems may be connected via the integrated pump connections. Models are available with a variety of bath sizes and other functional characteristics.
A variety of bath inserts for laboratory glassware, bath covers, and adjustable floors are available as accessories. Common applications include temperature control of measurement cells, photometers, and samples; heating of glass flasks; and temperature testing of food, luxury articles, and materials.
Features:
- Bright, white, easy to read display
- Easy pump change-over between internal and external circulation
- USB connection
- For internal and external applications
- Precise temperature control
- Very quiet
- Easy switching between internal and external circulation
Key Attributes
| Type | Stirred / Circulating Baths |
| Incubation | Yes |
| Refrigeration | Accessory only |
| Temp Range (°C) | A +20 to 150 |
| Capacity (L) | 26-39 |
| Circulation | Yes |
| Brand | Julabo |
| MaxFlow Rate (l/min) | 16 |
| Temp Stability (°C) | ±0.03 |
| Timer | Yes |
| Alarms | Yes |
| Digital or Mechanical | Digital |
| Data connection | USB |
| Tank Material | Stainless steel |
| Sample Agitation | No |
| Media Racks Available | Yes |
| Warranty (years) | 1 |
| Weight (lb) | 46.3 |
| Width (in) | 35.8 |
| Depth (in) | 14.2 |
| Height (in) | 16.9 |
Manufacturer Specifications
| Dimensions (W × L × H) |
35.8 x 14.2 x 16.9 in. |
|---|---|
| Filling volume | 26 ... 39 l |
| Weight | 46.3 lbs |
| Pump connections | M16x1 male |
| Barbed fittings inner diameter | 8/12 mm |
| Working temperature range | +20 ... +150 °C |
|---|---|
| Temperature stability | ±0.03 °C |
| Setting the resolution of the temperature display | 0.1 °C |
| Temperature display resolution | 0.01 ... 0.1 °C |
| Ambient temperature | +5 ... +40 °C |
Data based on voltage version: 115V/60Hz (Nema N5-15 Plug)
| Heating capacity | 1 kW |
|---|---|
| Pump capacity flow rate | 16 l/min |
| Pump capacity flow pressure | 4.8 bar |
| Viscosity max. | 50 cST |
| Bath tank | Stainless steel |
|---|---|
| Bath cover | accessory |
| Usable bath opening (W x L / D) |
26 x 12.6 / 5.9 in. |
| Cooling coil | accessory |
|---|
| Classification according to DIN12876-1 |
Classification III (FL) |
|---|---|
| IP Code according to IEC 60529 |
IP 21 |
| Pump function | Pressure Pump |
| Pump type | Immersion Pump |
| Temperature control | PID1 |
|---|---|
| Absolute temperature calibration | 1 Point Calibration |
| Temperature displayTemperature display | LED |
| Temperature settingTemperature setting | Keypad |
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
4.7 ★★★★★
Based on 1293 reviews
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Product Reviews
★★★★★ 5
Sturdy, Beautiful, and Functional
Color: Black
I love this MacBook stand. It sits at the perfect height (my neck doesn’t hurt anymore!), it matches the Space Black finish on the MacBook, and is very sturdy. I considered the 12 south instead of this, and returned it for this instead. Better value and better product. Overall, I highly recommend.
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Reviewed in the United States on February 12, 2025
★★★★★ 5
Fantastic Stand
Color: Gray, Color: Gray
Cooling - I purchased this stand for use in college, primarily so I could raise my laptop to the same height as my primary monitor. While my focus in purchasing this was on raising my laptop, the stand also helps cool the laptop. I have been thoroughly surprised i its effectiveness. Many times my friends and I will be working on homework together running programs such as Microsoft Teams and Mathworks Matlab simultaneously. In doing so, I will have my laptop on the stand so I can use my monitor. While my friends identical college-issued laptops are very, very hot due to the intensive tasks they are completing, mine is, at the most, warm to the touch. The only difference is that I am using the stand, and they are not. The slots in the stand, while not overly large, do aid in cooling the laptop significantly.
Build Quality - Prior to purchasing this stand, I saw several reviewers mentioning the finish on the stand, claiming it had an almost gritty quality. After receiving the product, I believe those customers were hoping for a very high level of final finishing. That is not to say that it is not a high quality finish, but if you are expecting it feel like the aluminum lid of a Macbook, it will have a slightly coarser finish than that.
The stand has rubber pads on all points it would contact the laptop with. These pads are mounted very securely to the frame, and I am not concerned at all about them falling off. If I would have to guess, they are made of a type of silicone and have shown no signs of wear after 2 months of daily use. They are also present on the bottom of the stand to protect the surface it is set on.
The stand itself is constructed of 4mm thick aluminum all around. As such, it is very sturdy. I would be absolutely shocked if a laptop broke one of these stands. I have even used it to hold textbooks temporarily, and it has held them with supreme ease.
Color - I purchased the model in the darker gray color. I did not have anything I was trying to match it with. As such, I cannot say whether it will match Apple's Space Gray products, although it looks very reminiscent of it.
For reference, my laptop is an HP Elite Dragonfly with a 13.3 inch screen, and my monitor is a 21.5 inch Acer unit.
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Reviewed in the United States on April 10, 2021
★★★★★ 5
Great minimalist stand
Color: Gray, Color: Gray
Really like the minimalist design of this stand. Quality is top notch with steady material and refined edges.
Had to make minor modifications to prevent laptop touching metal edges when putting on with slight angel tilt.
Overall very satisfied with the product.
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Reviewed in the United States on September 13, 2025
★★★★★ 5
Simple upgrade that actually improves your setup
Color: Black
I didn’t expect much from a laptop stand, but this made a noticeable difference right away. It lifts the laptop to a much better eye level, which helps a lot with posture—especially if you’re working for a few hours at a time.
The build quality is solid. It’s aluminum, has a bit of weight to it, and doesn’t feel cheap. Once it’s on the desk, it stays in place. The rubber grips hold the laptop securely, and I haven’t had any slipping issues.
I’m using it with a MacBook Pro and it fits perfectly. There’s enough space underneath for airflow, and I’ve actually noticed the laptop runs a bit cooler compared to sitting flat on the desk.
Overall, it’s a simple product but very effective. One of those small upgrades that you end up appreciating every day.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
I like it just fine. It’s good and it works for me.
Color: Black
It’s sturdy and I like the design. Seems pretty comparable to every other MacBook stand, but I chose this one for some reason and I’m happy with it. The height is not adjustable, so if you want that find another one.
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Reviewed in the United States on May 6, 2025