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Description
Jeio Tech VB Viscometer Heating BathsOverview Ultra precise temperature control with excellent visibility. Models: VB 25G 40G Performance Temperature range from ambient +5C to 150C. Microprocessor PID control Automatic tuning Calibration. Optimal temperature equilibrium achieved by a vane type stirrer with strong circulation power. Convenience Easy readout digital LED displays. (0. 01C resolution at 0 to 99. 9C 0. 1C resolution at 100 to 150C) Dual wait on off timer modes. (1 min. to 99
Overview
Ultra precise temperature control with excellent visibility.
Models: VB-25G/40G
Performance
- Temperature range from ambient +5°C to 150°C.
- Microprocessor PID control / Automatic tuning / Calibration.
- Optimal temperature equilibrium achieved by a vane type stirrer with strong circulation power.
Convenience
- Easy readout digital LED displays.
- (0.01°C resolution at 0 to 99.9°C/ 0.1°C resolution at 100 to 150°C)
- Dual wait on/off timer modes. (1 min. to 99 hr. 59 min.)
- Convenient memory function of up to three frequently set temperature.
- Clear visibility provided by double tempered safety glass windows in front and rear sides. (for operation from 10°C, use an optional cooling circulator)
- Ø 51mm holes (for glass capillary viscometer tubes) and a Ø12.6 mm hole. (for a thermometer)
- RS-232 interface for external control and data collection.
Safety
- Isolated design of agitator, heater, and sensor by a baffle plate to minimize the turbulence in the bath fluid and also to protect users and samples against direct contact.
- Complete safety protection system with warning alarms.
- - Low fluid level and dry-running, over-temperature, over-current.
Key Attributes
| Type | Specialty Baths |
| Incubation | Yes |
| Refrigeration | No |
| Temp Range (°C) | Ambient +5 to 150 |
| Capacity (L) | 4.8 |
| Circulation | Internal |
| Brand | Jeio Tech |
| MaxFlow Rate (l/min) | N/A |
| Temp Stability (°C) | N/A |
| Timer | No |
| Alarms | Yes |
| Digital or Mechanical | Digital |
| Data connection | No |
| Tank Material | Stainless |
| Sample Agitation | N/A |
| Media Racks Available | N/A |
| Warranty (years) | 1 (2 years after submission of warranty registration card) |
| Weight (lb) | 101.4 |
Manufacturer Specifications
| Model | VB-25G | VB-40G | |
|---|---|---|---|
|
Bath volume (L / cu ft) |
25 / 0.9 |
40 / 1.4 |
|
|
Working temperature range 2) (℃ / ℉) |
Amb. +5 to 150 / Amb. +9 to 302 |
||
|
Temperature stability 1) (±℃ / ℉) |
0.05 / 0.09 |
0.1 / 0.18 |
|
|
Dimension |
Bath opening / depth (W×L, D) (mm / inch) |
145×265, 330 / 5.7×10.4, 13 |
295×265, 330 / 11.6×10.4, 13 |
|
Cover lids / Hole for thermometer (mm) |
5ea / Ø51, 1ea / Ø12.6 |
8ea / Ø51, 1ea / Ø12.6 |
|
|
Exterior (W×L×H) (mm / inch) |
492×374×536 / 19.4×14.7×21.1 |
642×374×536 / 25.3×14.7×21.1 |
|
|
Net weight (kg / lbs) |
28 / 61.7 |
37 / 81.6 |
|
|
Electrical requirements (230V) |
60Hz, 13A | 60Hz, 13A | |
|
Cat. No. |
AAH43301K | AAH43401K | |
1) Technical data according to DIN 12876. (bath fluid : water at 70℃)
2) If you want to operate the unit below Amb. + 5℃, an optional cooling circulator is required.
The lowest temperature when using an optional cooling circulator is +10℃.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
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Product Reviews
★★★★★ 5
A Value Add
Format: Kindle
I am not a new host by far but I figured let buy some STR books and see what I could learn from others. This one was not disappointing and provided value. Stressing the importance of furnishing based on your target guest pool. Using AI to help manage your STR with the goal of maximizing performance. Author also provides readers access to his free newsletter to download.
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Reviewed in the United States on December 8, 2023
★★★★★ 5
Ambitious universe building that starts small
Format: Kindle
Defiance of the Fall is in the Top 5 of my favorite progression fantasy stories (for reference, I think you should at least try the first book of all 5 series with the other 4 series being Primal Hunter, He Who Fights with Monsters, Azarinth Healer, and The Calamitous Bob). The scale of this series world-building is beyond any other series that comes to mind. And the crazy thing is that 16 books in, there's still a TON of room to keep building. I'm hoping the author can keep the series at this quality out to at least 30 books.
The series starts out slightly slower-paced, but 16 books in I think that was a good thing as it really sets up the main character and enables a slow build up of their new existence. You learn as the MC does, and at the beginning the MC is still struggling with the basics. But as the main character progresses, that 'world' gets more and more complex and grows vastly in scope (there's a whole giant universe out there), with that complexity being the main challenge of the series. When there is 16 books worth of progress, remembering all the details can get a bit challenging. Book 16 books in, I'm still eagerly reading every book that comes out.
All in all, I highly recommend this series and all of the others in my Top 5 list. If I had to round that out to a Top 10, other series I would recommend would be Paths of Akashic, Dual-Class, Grand Game, Unintended Cultivator, and A Thousand Li. None of those latter 5 are a strong as the top 5, but all are worth reading IMO.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Great LitRPG
Format: Kindle
Solid LitRPG stuff. It has all the hallmarks of the genre and they're executed well, your protagonist who starts off average and gets stronger and stronger, experiencing both great danger and great opportunity, taking risks that (usually) pay off.
Where it really shines is the worldbuilding; it's a somewhat slower burn in that respect but the writing does a good job of building a coherent, intriguing world with a ton of different factions and factions within factions with their own motivations. The history of the world is legitimately interesting and being cultivation-themed gives it a unique flavor compared to many others which are more straight RPG (and there's even a good in-universe reason for this).
My criticisms are fairly minor, the writing can be a bit dry or awkward on occasion "The situation clearly hinted at a situation where he would only need to...", and the universe and lore is expansive enough that it's easy to forget about some individual element on occasion.
This is an overall review of the series (16 books at time of writing).
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Reviewed in the United States on April 10, 2026
★★★★★ 4
good book, needs an editor.
Format: Kindle
The premise was good, and the story arcs were good. But the actual writing style of this book left a lot to be desired. I see the author is up to book 16 as of now. Hopefully they have fixed a lot of these minor issues.
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Reviewed in the United States on January 29, 2026
★★★★★ 5
So Happy I found this
Format: Kindle
Excellent addition to the genre. On par with some of the other great series in the space and better than many I have read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
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