2012 Titrator Product Survey

Find out what our readers had to say about the titrators in their labs.

By

Titration is a common laboratory operation for quantifying chemicals or reagents, usually in aqueous solution. In a typical setup, the titrand—the solution containing the unknown—is treated with precise volumes of a standard solution of the titrant—the reagent of known strength. The titration end point is reached when a chemical balance is achieved between the titrant and titrand. The concentration of the unknown in the original sample is calculated through simple equations related to the applicable chemical stoichiometry and any dilutions that may have occurred during sample preparation. Titrators are specialized instruments that perform titrations with minimal operator intervention and can thus minimize errors, improve throughput, and facilitate documentation. There are two major titrator types: potentiometric acid-based designs and Karl Fischer titrators. Those in the first group, which use a pH or redox probe, resemble pH meters in their ability to derive acid strength and total acidity; Karl Fischer titrators measure water content in foods, materials, biofuels, etc. Most titration work occurs in quality control laboratories. The latest trends and developments in titration are flexibility and versatility. Different industries have different titration needs, ranging from low-cost, easy-to-use, single-type titrations to complex, multi-chemistry, multielectrode, multi-sample, and multireagent analysis. To ensure a consistent high level of accuracy and precise volumes of titrant, many labs are automating their titration work.

 

The types of titrators our readers use in their labs:

Potentiometric 47%
Karl Fischer Coulometric 22%
Karl Fischer Volumetric 27%
Other 4%

 

The titration methods our readers are currently using in their labs:

Manual titration 44%
Automated titration 56%

 

The main hardware-related errors our readers experience with their titrators include:  

Measurement of the titrant aliquot 11%
Indicator variability 11%
Operator fatigue and computation error 15%
Anomalies in composition of the standard solution 10%
Accuracy of the delivery system 20%
Systemic and non-systemic errors 24%
Other 10%

 

The top 10 factors and features our readers look for when buying a titrator:  

  Important Not Important Don't Know
Accuracy 98% 2% 0%
Reliability 98% 2% 0%
Ease of use 94% 6% 0%
Service and support 91% 9% 0%
Low Maintenance 85% 12% 4%
Operating cost 85% 12% 4%
Warranty 85% 15% 0%
Price 79% 17% 4%
Data management 73% 25% 2%
Ease of installation 73% 23% 4%

 

For more information on titrators, visit http://www.labmanager.com/titrators

See the most recent survey results here

Categories: Surveys

Published In

Hazcom 2012: Are You Prepared? Magazine Issue Cover
Hazcom 2012: Are You Prepared?

Published: June 1, 2012

Cover Story