How to Select Water Quality Testing Instruments   Image Credit: Fotronic Corp | Control Company | Knick   Water quality testing instruments are used to test water for chemical and biological agents, and to measure variables such as clarity and rate of movement. These instruments provide a standard tool that can be used to collect information from various water sources. Water quality testing instruments can monitor water temperature, dissolved oxygen, pH, conductivity,...
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Q & A on Water Quality Testing Instruments

We asked our users for their input on Water Quality Testing Instruments. Here are the results of 97 users familiar with Water Quality Testing Instruments.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing water quality testing instrument design?
14 answers
Answers:
Technical specifications are more important to compare with design. Nanotechnologies. Gives Z-potential measurements and laser granulometer.
~Research & Development, Riga, Latvia
New type of electrodes where you can measure different parameters all at one time.
~Rajnikumar S, Research & Development, Mumbai, India
Dredging and pipe line laying and waste management
~Engineering, Consulting, Port Harcourt, Nigeria
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Q:
From your perspective, which companies are creating the most innovative water quality testing instruments?
16 answers
Answers:
Datalogger ie (www.datalogger.com.ar) Boilertec (www.boilertec.com.ar)
~GABRIEL CAFFESE, Design Engineer, LA PLATA, ARGENTINA
For moderately priced instruments, Hanna comes to mind.
~Rajnikumar S, Research & Development, Mumbai, India
Group of the scientists from MIT (Z potential).
~Research & Development, Riga, Latvia
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Applications and UseTop

Q:
What are some of the applications you have used water quality testing instruments for?
24 answers
Answers:
Monitoring pesticides in water source Monitoring PAH, PCB’s in water Monitoring disinfection by-products Monitoring heavy metals in water Monitoring different anions and cations, COC, BOD
~Reham Abu shmeis, Faculty/Staff, Amman, Jordan
SiO2 check in industrial water (esp. Demin & soft water) some to check properties on cooling water system (cooling & chilling water).
~Engineering, Process/Production, Bandung, Indonesia
I have designed TDS meters for "Inverse Osmosis controllers" and as part of "Boilers controllers" (which I have also designed).
~GABRIEL CAFFESE, Design Engineer, LA PLATA, ARGENTINA
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Q:
Please share with us any “non-standard” applications that water quality testing instruments have been used for.
10 answers
Answers:
I have used conductivity meter in my manufacturing process for solution concentration check as well as to check salt concentration while washing the finished product free from salt.
~Rajnikumar S, Research & Development, Mumbai, India
Answer from opposite side. I am using surface tensiometer for the characteristics of the surfactants in the water (measuring surface tension).
~Research & Development, Riga, Latvia
For measuring "mastitis" (a word in spanish, don't know the translation to english) level.
~GABRIEL CAFFESE, Design Engineer, LA PLATA, ARGENTINA
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of water quality testing instruments?
6 answers
Answers:
Yes, as part of my experience with lack of testing instrument used for water testing, one of our power plant diesel engine seizured due to high temperature and the crankshaft broke, which is dangerous to personnel who are attending the machine. We found out that there was build up of scales in the water system of the engine that may be the possible cause of overheating.
~Arnel B., Laboratory Test Engineer for Automotive Junction Boxes, Cebu, Philippines
Relying on online meters can be dangerous. They work as well as their maintenance program is carried out....
~Production Chemist, Miri, Malaysia
Some chemical reagents were expired and that caused a disastrous mistake at that time.
~Reham Abu shmeis, Faculty/Staff, Amman, Jordan

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
12 answers
Answers:
It will be nice to see conductivity electrode standardised so one can use it on any instrument just like pH electrode.
~Rajnikumar S, Research & Development, Mumbai, India
More hand held equipment for use in the field, more rugged tools with high sensitivity and low detection limits.
~Production Chemist, Miri, Malaysia
Innovative user friendly, many applications and handy, and most of all high range on its application.
~Arnel B., Laboratory Test Engineer for Automotive Junction Boxes, Cebu, Philippines
Sensor for every material, that is accurate, fast, reliable and portable to be used in site
~Reham Abu shmeis, Faculty/Staff, Amman, Jordan
Elecotrolytic conductivity: Accuracy: 0.1% Two point calibration
~Adrian R, Engineer, Queretaro, Mexico
Ease of use in operation and calibration Accuracy Cost
~Reino P, Manufacturer, Thunder Bay, Canada
Have ethernet port, for getting access from everywhere.
~GABRIEL CAFFESE, Design Engineer, LA PLATA, ARGENTINA
Constantly looking at the quality of the water weekly
~Engineering, Consulting, Port Harcourt, Nigeria
Better price and smaller in the dimensions.
~Research & Development, Riga, Latvia
Economic & ergonomic
~Engineering, Process/Production, Bandung, Indonesia
Simplicity
~Gary Carroll, Chemistry Tecnician, Eden, NC
See Q3
~John G, Retired Government official specialising in water safety and security, Tonbridge, UK

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of water quality testing instruments?
7 answers
Answers:
I would like to caution people using the same electrode for checking the pH of two different solutions which when combined will form a precipitate, such as diammonium phosphate solution and calcium chloride solution. This is likely to block reference plug and give incorrect readings.
~Rajnikumar S, Research & Development, Mumbai, India
Have a previous idea about water quality in the environment and the ranges of concentrations you have, then buy the system that could analyze within that range.
~Reham Abu shmeis, Faculty/Staff, Amman, Jordan
First, acquire instruments which are common to your application, with many application features for you to save money and time.
~Arnel B., Laboratory Test Engineer for Automotive Junction Boxes, Cebu, Philippines
Instruments with complex menus to access or change parameters should be avoided.
~Reino P, Manufacturer, Thunder Bay, Canada
Disable ATC for unknown samples Properly record measurement's temperature
~Adrian R, Engineer, Queretaro, Mexico
Compare quality
~Gary Carroll, Chemistry Tecnician, Eden, NC
See Q8
~John G, Retired Government official specialising in water safety and security, Tonbridge, UK

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using water quality testing instruments?
8 answers
Answers:
Carefully Verify: Working interval Available reference materials for calibration Automatic temperature compensation Calibration capabilities
~Adrian R, Engineer, Queretaro, Mexico
Go for the best, not for the cheapest because you get what you pay for.
~Production Chemist, Miri, Malaysia
Test the instrument and calibrate it before considering the results.
~Reham Abu shmeis, Faculty/Staff, Amman, Jordan
Decide exactly what your requirements are and don't compromise.
~John G, Retired Government official specialising in water safety and security, Tonbridge, UK
Buy the most reliable and high quality instruments.
~Arnel B., Laboratory Test Engineer for Automotive Junction Boxes, Cebu, Philippines
Ensure ease of use and ease of calibration.
~Reino P, Manufacturer, Thunder Bay, Canada
MUST have temperature compensation.
~GABRIEL CAFFESE, Design Engineer, LA PLATA, ARGENTINA
Shop around and investigate.
~Gary Carroll, Chemistry Tecnician, Eden, NC

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