Specialty Products

Our selection of purpose-built products is designed to accommodate specific testing and quality control needs, such as the calibration of temperature measurement devices, viscosity measurements, fecal coliform testing, plasma thawing, histological and beverage-aging studies.

Polycarbonate Viscosity Baths with
Advanced Programmable Temperature Controller

Key Specifications

Working Temperature: Ambient +10° to +85°C 
Temperature Stability: ±0.01°C 
Safety Rating: DIN 12876-1 Class I (for use with non-flammable liquids) 
External Temperature Control Capability: Yes 
Pump: Variable-speed 
External Circulation: Open- or closed-loop

  • Configured for use with popular capillary viscometers
  • DuraTop™ insulating, chemical-resistant top deck
  • Includes tap water cooling coil
  • Drain port

Key Features

  • Time/temperature programming (ten 100-step programs)
  • Intuitive 4.3” (10.9 cm) SmartTouch display
  • 6 languages: French, German, Spanish, Chinese, Arabic, English
  • Variable speed pump with open- and closed-loop external circulation capability
  • Swivel 180™ Rotating Controller
  • On-board connectivity: USB-A & B, Ethernet, RS-232/RS-485 and external temperature probe
  • Event scheduling (time & date) with real-time clock
  • Review temperature trends for up to 10 days
  • Multiple selectable “home” screens
  • On-screen help
  • Automatic and/or user-adjustable performance optimization
  • 5-point calibration capability

Product Specifications & Part Numbers

29 Liter Viscosity Bath, Round Openings 29 Liter Viscosity Bath, Square Openings
Controller Type Advanced Programmable Advanced Programmable
Programmable for Test Protocols
Heater Wattage 1100 W (60Hz)/2200 W (50Hz) 1100 W (60Hz)/2200 W (50Hz)
Pump Speed Variable Variable
Temperature Stability ±0.01° C ±0.01° C
Viscometer Openings
5 Round Openings
3 Square Openings
Working Access (LxWxD) (5) x 5.1 Ø x 28.6 cm (3) x 8.9 x 8.9 x 28.6 cm
Overall Dimensions (LxWxD) 54.4 x 22.9 x 52.6 cm 54.4 x 22.9 x 52.6 cm
60Hz Part Number AP29VB5R-A11B AP29VB3S-A11B
50Hz Part Number AP29VB5R-A12E AP29VB3S-A12E


Maintains temperatures with ±0.01°C stability. Displays actual bath temperature to 1/1000° temperature resolution and temperature trends from 4 minutes to 10 days. For more precise performance, the Advanced Programmable Controller offers advanced fluid tuning, user-settable temperature averaging on the display and temperature control of an external application.


Extremely easy to use, the Advanced Programmable Controller’s time/temperature programming allows you to create and edit programs quickly and easily. Settable time or temperature priority ensures programs run as intended. Plus for added convenience, you can preview, share or schedule a program to run automatically. The Controller can store 10 programs of up to 100 steps each. 


Extensive connectivity capabilities enable you to control and communicate with your circulator in a wide variety of ways, including Ethernet, RS-232, addressable RS-485, USB-A and USB-B. For additional communications flexibility, you can even emulate the command protocols of other popular circulating baths and communicate with your circulator using an iPhone®.


On-screen help and intuitive touch screen operation make using the Advanced Programmable Controller exceptionally easy. Set-point changes, programming and operational changes are simple and fast.


Class III flammability rating (per DIN 12876-1), redundant over-temperature protection, high and low temperature limits and alarms alert you instantly to conditions that fall outside normal operating parameters. Lockout capability prevents unauthorized operational changes.