Status:
ReviewerMember since: 2022
Organization: Manipal Institute of Technology, Manipal Academy of Higher Education
Accurate, precise results and affordable.
Application Area: Analyzing trace elements in water samples.
"I have been using the instrument for four and half years. I am mainly analyzing the trace elements in river and groundwater samples. 797 VA Computrace is a effective analytical instrument which gives results in Nano gram per liter, and is equivalent to the ICP-MS instrument. At the beginning, I found little difficult in understanding the processes and handing the instrument because this instrument deals with electrochemistry. Later I found it very user friendly and convenient for measuring the trace elements in ppb level and to study the speciation of the few elements. I recommend young students to learn this instrument because in spite of geochemistry research student I have learnt most of the chemistry, electronic and analytical part from VA Computrace. One have to be thorough with the Computrace instrument then its really fun to play with the instrument. Moreover the technical team, I personally appreciate Mr. Kasi Viswanathan for his immense support whenever I stuck with the instrument. Whenever I am calling him, he is always ready to assist me to rectify the problem . Finally, compared to any other high-end instrument its user friendly, cost effective and give precise and accurate measurements."
Status:
ReviewerMember since: 2021
Organization: Laboratorio Analisi Genovese
Amazing result with cheap instruments for Metal trace analysis.
Application Area:Enviromental analysis
"Bought in 2005 I'm very happy of this system for trace analysis in water. Great instrument for ppb analisys in water samples . not fast compared to ICP system but MUCH MUCH MORE economic fopr analysis. Great reproducibility ( more then 15 years interlab check )"
Status:
ReviewerMember since: 2022
Organization: liaquat national medical college karachi pakistan
The versatile instrument for voltammetry
Application Area:voltammetry
"The versatile instrument for voltammetry. 797 VA Computrace is a modern voltammetric work station connected to the PC via a USB port."
Status:
ReviewerMember since: 2021
Organization: University of Tasmania
Excellent customer service and support for our instrument and users.
Application Area:Voltammetry of trace element seawater
"Our instrument is several years old now and has faced some electrical difficulties, however the service and support from the Metrohm team ensured our instrument was quickly and reliably functional again. The Metrohm Team are always quick to respond, provide helpful advice for troubleshooting and spare parts are always delivered promptly."
Status:
ReviewerMember since: 2020
Organization: ATOTECH DE MEXICO
Good results.
Application Area:Trace contamination, metal content
"Is easy to use, you have to be sure to prepare the device and electrodes properly to get good results. Is a very sensitive device and the technician has to be careful to get reproducible results."
Status:
ReviewerMember since: 2020
Organization: Schloetter Co Ltd
A very good quality machine, suitable for carrying out highly technical analyses.
Application Area:Brightener and suppressor analysis in copper electroplating solutions
"For our application, the product is good at it's job. Whilst our current software is not the most up-to-date issue, it is still easy to operate, although understanding the reasons or procedures behind why certain settings have to be "like that" does take a little time to comprehend. Overall, the machine is very good, with any problems mostly to do with the material(s) that we are trying to analyse. Whilst the equipment is rather pricey, it is of excellent quality, with any failures due to age-related wear-and-tear, rather than faults with the apparatus. The documentation provided by Metrohm is easy to follow, and logical in its approach."
Status:
ReviewerMember since: 2020
Organization: Heinrich-Heine-Universität Düsseldorf
A robust, easy to use instrument even in the hands of chemistry students.
Application Area:Water analysis for trace metals and juice analysis for Vitamin C in student analytic lab
"The VA 797 Computrace serves to introduce the analytical chemistry methods of polarography and voltammetry to 4th semester chemistry students. The students analyze a tap water sample for the concentration of zinc, copper, lead and cadmium ions and a juice sample for the concentration of vitamin C. In the summer semester about 50 students work with the instrument over 5-6 weeks, in the winter semester another ~50 students use the instrument over 5-6 weeks. The students are given a handout with instructions how to use the instrument. The instrument has been in service now for about 8 years. So far, we've had no major damage done to the instrument and no major failure. The mercury drop electrode is, of course, regularly serviced by a staff technician. We obtain very reliable data from the instrument as verified by the large number of experiments done on easily comparable samples. The VA 797 Computrace is easy to operate and robust as demonstrated with the lab course. We had no problems giving the instrument into the hands of students. Once or twice in the 8 years of service we had to contact Metrohm service which responded fast and we were able to solve the problem without a visit. Outside of the time of the lab course the instrument is available for metal analysis in aqueous solutions."
Status:
ReviewerMember since: 2019
Organization: ASARCO LLC
Just what we needed .
Application Area:Thiourea in copper electrolyte solution
"When replacing the outdated equipment for thiourea analysis, the best option was the VA 797. This instrument was accurate and flexible enough for our processes. We use it on a daily basis for accurate results in the ppm range. The only issues we have is plugging of the capillary tube. But, this has to do with our solutions we run on the instrument. We have had a few service calls and Metrohm took care of the problem in a timely manor. Parts and supplies are easily available."
Status:
ReviewerMember since: 2019
Organization: Indira Gandhi Centre for Atomic research, India
Very useful instrument for some of the metal analyses in high EC aqueous solution.
Application Area:Analysis of traces in aqueous sample
"Very easy to use. a day to day research instrument for a chemical laboratory with the HMDE electrode. Many specialized applications are possible with a variety of electrodes offered."
Status:
Advanced ReviewerMember since: 2015
Organization: APM
A great product and is easy to use.
Application Area:Impurities.
"This is a great product and is easy to use. It is easy to clean and the finish on the instrument resists corrosion. All parts are easy to exchange in the unit. The software is very user friendly for all technicians. Metrohm customer support has been great and has knowledgeable people to troubleshoot with when called on. The price of the instrument is fair and the instrument seems to be hardy for the lab environment."
Status:
ReviewerMember since: 2013
Organization: All India Institute Of Medical Sciences (Aiims)
Application Area:Trace metal analysis
"For analysis of trace metal 797 VA computrace is a very good instrument. The best part of instrument is-It is very easy to handle. It detects trace metal up to ppb to ppt level. It is a portable device and takes less space."
797 VA Computrace is a modern voltammetric work station connected to the PC via a USB port. The complementary PC software controls the determination, records and evaluates the measured data. Thanks to the sophisticated program design the operation is unbeatably simple. All the methods that are described in the Metrohm Application Bulletins and Metrohm Application Notes are already preinstalled. The integrated new designed potentiostat with galvanostat guarantees highest precision with reduced noise. The well-proven Multi Mode Electrode (MME) as well as rotating disk electrodes (RDE) from different materials are available as working electrodes, of course.
The most important applications