An environmental laboratory contacted Hanna Instruments interested in testing strong and total alkalinity quickly and easily. The customer wanted an automatic titrator to reduce the time and monotony associated with manual titrations; this would allow technicians to use their time more effectively on other tasks and increase throughput.
The laboratory ran 30 alkalinity samples a day for both strong and total alkalinity. Hanna Instruments suggested the HI902 Automatic Potentiometric Titrator with HI921 Autosampler. The laboratory often ran strong and total alkalinity on the same sample, so Hanna Instruments suggested the use of a linked method with the autosampler. The use of linked methods allowed the customer to run multiple analyses on the same sample without interruption.
The customer opted for the 18-beaker autosampler tray on which they loaded one beaker for electrode storage, two beakers for a dip rinse, and 15 beakers for samples. After selecting the appropriate alkalinity methods on the titrator and programming the autosampler sequence, starting the analysis of all samples was as easy as pushing the ‘Start/ Stop’ button. After the analysis was complete, a full report on every sample for both methods was automatically generated and stored to the titrator’s memory. The customer valued the ease of use and total automation of their linked alkalinity titrations. The use of the HI902 titrator with the HI921 autosampler not only saved them time, but increased their accuracy compared to manual titration. The HI902 and HI921 combination proved to be a perfect fit for the customer’s needs.
Hanna Instruments
JHB: (011) 615 6076
CT: (021) 946 1722
DBN (031) 701 2711
hanna@hanna.co.za
www.hanna.co.za
