Has anyone used a fully automatic potentiometric titrator? Can we talk?

I’m not sure what parameters your company uses a fully automatic potentiometric titrator to test, and what the accuracy requirements are Generally, choosing well-known brands is basically reliable. ;P

This post was last edited by qugd on 2023-2-12 09:37. Fully automatic potentiometric titrators with mature foreign products existed about 35 years ago, and in the past 20 years, many domestic products have also achieved very good quality. Potentiometric titrators generally include pH acid-base titration, potentiometric oxidation-reduction titration, as well as some end-point detection titrations using the iodometry and bromometry methods; since these titration methods can all use potential to determine the end point, some precipitation titrations can also have their end points indicated by potential. Most complexometric titrations cannot have their endpoint determined using potential indicators; in such cases, a photometric probe is used to detect the endpoint. Adding this functionality incurs considerable additional costs. It is recommended that the original poster choose an appropriate product by taking into account the testing items for which titration analysis is to be performed, the costs that the company may incur, and the technical skills of those who will use the device in subsequent operations. The technical specifications are more or less similar; potentiometric titration offers higher precision than manual titration, as the addition of the titrant is carried out using a syringe pump/piston pump driven by a precise stepper motor, which enables accurate control over the addition of the titrant at the microgram or even sub-microgram level. The determination of the endpoint can be achieved with a precision of several mV or 0.01 mV. Note that for some potentiometric titrations, it may also be necessary to consider the ability to determine the potential endpoint through first or second differentiation, which is a preferred method for titration processes where the potential jump is not particularly distinct. Regarding the display of titration curve outputs, titration results, an automatic sample carousel, and LIMS networking communication, such additional features are optional to consider depending on the situation, provided that the volume of samples is not large and no formatted reports need to be generated for external parties. It is important to carefully examine the local service and technical support capabilities offered by a brand’s products; sometimes such support and services are difficult to obtain even at a cost, and attempting to drive down prices artificially may result in a decline in the quality and timeliness of those services.

Imported ones are expensive, while domestic ones are cheap. We use Leimi’s