Page 14 - Customer Needs and Use Assessments (CNUA) of pH Sensors

ACT In Situ pH Sensors Customer Needs and Use Assessment............................................................................ 13
17. What level of reproducibility do you require for this application?
0.1: 30.8% (12)
0.01: 41.0% (16
< 0.001: 28.2% (11)
Other. Please describe:
Two respondent comments specify 0.002 and 0.005.
18. Is your pH sensor part of an instrument package?
Forty respondents answered; 60.0% (24) indicated that their pH sensor was part of a suite of water quality
instruments while 40.0% (16) describe their instrument as a stand-alone.
19. Is your pH sensor a commercial product? a design you developed yourself?
Out of 39 responses 94.9% (37) classify their pH sensor as a commercial product and only 5.1% (2) as a design
developed themselves.
20. In which of the following areas do in situ pH sensors that you are currently using have significant
limitations? (not performing up to specifications or expectations, nor meet your needs?
The top 12 categories with the most significant limitations are shown in descending order in the figure below.