While titration is a basic analytical method, titrators are specialized instruments that perform titrations with minimal operator intervention. They can thus minimize errors, improve throughput, and facilitate documentation. There are two major titrator types: potentiometric acid-based designs and Karl Fischer titrators.
Top 6 Questions You Should Ask When Buying a Titrator
- How precise is the titrant delivery system? Is the titrant delivery system certified for accuracy?
- Can additional titrants be used without having to purge burettes?
- What information is included in the titrator’s display and reports?
- Is the titrator limited to proprietary electrodes? What is the replacement cost for electrodes?
- Is the software field upgradeable?
- What is the service and repair policy?
- Is on-site support offered?
- If something goes wrong with the meter, can it be fixed locally?
- What is the general turnaround time for repair?
Respondents are using the following titration methods in their labs:
|Automated titration ||57% |
|Manual titration ||43% |
Respondents are using the following types of titrators in their labs:
|Potentiometric ||57% |
|Karl Fischer Coulometric ||49% |
|Karl Fischer Volumetric ||40% |
|Other ||8% |
Survey respondents are currently using the following titrator components:
|Autosampler ||32% |
|Karl Fischer oven ||21% |
|Evaporator ||10% |
|Homogenizer ||6% |
|Other ||16% |
Survey respondents currently inspect their titrators with the following frequency:
|Before every use ||38% |
|Weekly ||16% |
|Monthly ||7% |
|Quarterly ||10% |
|Every six months ||8% |
|Annually ||15% |
|Don’t know ||5% |
Top ten features/factors survey respondents look for when buying a titrator:
|Accuracy ||100% |
|Reliability ||95% |
|Low maintenance ||95% |
|Ease of use ||88% |
|Operating cost ||83% |
|Service and support ||80% |
|Price ||76% |
|Warranty ||73% |
|Speed ||68% |
|Data management ||62% |
Readers’ labs have encountered the following problems that affected titrations:
|Misjudging the color of the indicator near the end point ||40% |
|Leaking burette ||40% |
|Using solutions of wrong concentration ||27% |
|Misreading the volume ||25% |
|Not filling burette properly ||22% |
|Using contaminated solutions ||21% |
|Using dirty glass ||19% |
|Using diluted titrant and diluted titrated solution ||14% |
|Titrating at the wrong temperature ||10% |
|Losing solution ||8% |
|Rinsing burette and/or pipette with the wrong solution ||6% |
|Other ||3% |
For more information on titrators, including useful articles and a list of manufacturers, visit www.labmanager.com/titrators
See the most recent survey results here