Transcript Title

Introducing the New Range of
PC-based Ion-Analysers
ELIT 9801 – ELIT 9804 – ELIT 9808
From NICO 2000 Ltd.
Document No. IAP 05-03-c.ppt
compiled by
Heinz Kreuzberg, Shree Barve, Ameet Barve & Chris Rundle
London, UK - May/June 2003
NICO 2000 LTD.
A Multitude of Applications for Ion Analysers
AGRICULTURE
COSMETICS
INDUSTRIAL
PRODUCTION
WATER MONITORING
WASTE WATER
TREATMENT
FISHERIES
POLLUTION
CONTROL
BLOOD TESTING
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Contents
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10.
Introduction to Ion Measurement
pH Measurement
Product Description
Features – Benefits – Advantages
Applications
Hardware Details
Software Details
Using the ISE / pH Ion-Analyser
Using the 4- & 8- Channel Analysers
The NICO 2000 Product Range
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Introduction to Ion
Measurement
Ion-selective Electrodes (ISEs) allow
us to determine the concentration of a
specific ion in aqueous (& in rare
cases non-aqueous) solutions.
An Ion-Analyser or Ion Meter is
required to convert the electrical
signal from the ISE into a relevant
unit of concentration (ppm or
mol/litre).
Measurements with ISEs are
temperature sensitive. An exact
temperature compensation for
measurements taken at different
temperatures is not possible. Therefore,
calibration and sample measurement
should be done within the same
temperature range (+/- 10).
The calibration procedure uses IonStandards (solutions with a precisely defined
ion concentration) and specifically diluted
calibrating solutions. Usually, 1:10 serial
dilutions from a 1000 ppm ion-standard.
The measurement made is not
an absolute one but rather a
comparison of a sample
measurement with a calibration
measurement (calibration curve)
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Typical ISE Calibration Graph
NB: X-axis units are the logarithm of the Molar Activity of the Ion
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ISE Measurement with ELIT ISE/pH Ion-Analyser
For educational purposes, sample results are plotted on the Calibration Graph
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pH Measurement
with ELIT ISE/pH Ion Analyser
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pH is a measure of the Acidity or Alkalinity of a solution.
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Actually measures the concentration of Hydrogen Ions.
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Is based on a logarithmic relationship between the sensor
signal (mV) & the Hydrogen ion concentration (mol/L).
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Calibration standards for pH measurements are called
Buffers due to their ability to keep the pH value stable when small
amounts of acid or alkaline substance added.
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The most common Buffers are pH 4, pH 7 & pH 10.
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Like all Ion-selective measurements, pH measurements are
influenced by temperature changes. Therefore, instruments have
manual or automatic temperature compensation facilities.
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To simplify the handling of results of pH measurements,
the 14 decades of hydrogen ion concentration are converted
into a linear (pH) scale from 0 to 14 using the
Soerensen equation:
pH value = negative Logarithm of the Hydrogen ion concentration.
pH 0 is extremely acidic, pH14 is extremely alkaline & pH 7 is neutral.
2-Channel pH Display
“Virtual Instrumentation”
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1N Caustic Soda
Lye
Ammonia
5
neutral
6 7 8
Milk of Magnesia
4
Baking Soda
3
Pure Rain
Milk
Pure Water
Human Blood
2
Acid Rain
acid
0 1
Lemon Juice
Vinegar / Cola
Battery Acid
1N HCl
Typical pH Values
pH Scale
alkaline
9 10 11 12 13 14
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Product Description
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3 Types of Ion-Analyser are available:
ELIT 9801 = ISE/pH Ion-Analyser
ELIT 9804 = 4-Channel Ion-Analyser
ELIT 9808 = 8-Channel Ion-Analyser
They are powerful tools for measuring & monitoring Ion Concentrations,
pH, Redox (ORP) & Temperature
They contain high quality Electrode Amplifiers, High Resolution Analogueto-Digital converters, a Powerful Microprocessor & a state-of-the-art
opto-isolated Serial interface
They are primarily PC-based Instruments - but the hardware is also
compatible with any computer with a serial port (RS232)
They are powered by sophisticated software which runs on any Microsoft
Windows Operating System; - Windows 98 or later (2000, ME, XP).
Menu-driven software guides the user reliably through the measurement
process & supports GLP effectively.
They can perform Single Measurements,on a series of samples or
Continuous Monitoring of changes in individual solutions .
Acquired data is displayed online in Tables and Graphs.
Data are stored as ASCII text files which are easily Exportable to other
software packages such as Excel, Labview etc.
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Features & Benefits
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Compared to many other analytical methods, Ion-selective measurements are remarkably
analyte -specific, very cost effective & suitable for continuous monitoring of time dependent
changes in analyte concentration.
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ELIT Ion-Analysers incorporate the Latest Technology & enable the user to realise the full
potential of Ion-Selective measurements.
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ELIT Analyser software ensures error-free data acquisition, storing & processing, and
provides the user with reliable and clear guidance during the measuring process.
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ELIT Multi-channel Analysers connect up to 8 Electrodes to one computer.
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During Continuous Monitoring, the Sampling time can be varied over a wide range.
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An Averaging Algorithm smoothes unstable and noisy measurements.
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ELIT ISE/pH Analyser:- Enables the detection limit to be significantly lowered by using three different
algorithms to obtain optimal results in the non-linear range of the calibration curve.
- Allows the user to select the most suitable method from:
Direct Potentiometry; Standard-Addition; Sample-Addition.
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Worldwide Applications
Pollution Control
Water Quality Monitoring
pH, Calcium & various ions in
surface water (rivers, lakes & ponds)
Ammonium in ground water
pH, Ammonium & Nitrate in fish
tanks & fish ponds
pH of acid rain, soil, surface water
Contamination of surface water and
ground water with ammonium and nitrate
Contamination of waste water with
Cyanide, Cadmium, Mercury & Copper
Food Quality Control
Nitrate & Nitrite in meat & vegetables
Chloride, Sodium, Nitrate & Nitrite in
baby food
Fluoride & Calcium in milk & other
milk products
Cadmium in fish
Pharmaceutical & Cosmetics Industry
Fluoride & pH of Tooth Paste
pH of Hair shampoo
Many other Ions determined in Pharmaceutical and
Cosmetic Research & Development
Industrial Production
The ELIT
Range of
Ion-Analysers
Waste Water Treatment
pH, Ammonium, Nitrate & other
Ions used during processing
Research & Education
Agriculture & Fishery
Soil & Fertilizer Analysis for
Nitrate, Ammonium & Potassium to
optimize the use of fertilizer (cost
savings & highest yield)
Dissolved Oxygen and pH in
Ponds for Fish Breeding
Salinity & pH of Boiler feed water
Cyanide in Plating baths
Process-specific Ions
Medical Diagnosis
& Hygiene Control
pH, Redox in Higher Education
All types of Ion Measurements &
Continuous Monitoring in Schools
and Colleges
Potassium in urine
Contamination Control for various Ions
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Hardware Details
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Solid all-ABS plastic enclosure ensures
good resistance to corrosive spills and
atmosphere.
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Supplied with data cable and adapter for
connection to 25-way or 9-way serial port on
the computer (RS232).
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Plug in AC / DC Power Adapters with
country-specific plugs.
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Optional special “active” cable for
connecting to USB ports on the computer
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Optional small Battery Power Pack
for use in the field.
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Stainless steel temperature sensors with
optional Teflon coating.
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BNC connectors for Electrodes.
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3.5mm connectors for Temperature sensors.
Electrode Amplifiers guarantee the best
results with all types of ion-selective & pH
electrodes (standard, special & micro).
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2mm connectors for external Reference
electrodes (if required).
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Powerful Microprocessor allows high
resolution measurements & wide range of
sampling times for continuous monitoring.
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Signal ground completely isolated,
therefore no Ground Loops.
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Software Details
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State-of-the-art, User-friendly
“Virtual Instrumentation” using the power
of modern computing for operator
convenience, efficiency and data
security/protection.
Storage of up 100,000 data points for one
continuous measurement
(ELIT 9804 & 9808).
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Easy to integrate into Laboratory
Management Systems (LIMS).
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Acquired Data well presented in Graphical
& Table format.
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Very Flexible 2D & 3D Graphical Data
Display (ELIT 9804 & 9808)
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Online Data Display
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Selectable Smoothing of noisy
measurements by selecting the
Averaging number.
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Good suppression of 50 Hz & 60 Hz
interference
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Easy-to-implement Communication
Protocol if Ion-Analysers are
connected to operating systems other
than MS Windows
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Using the ISE / pH IonAnalyser
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Calibration Procedure
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Calibration Curve
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Incremental ISE
Determination
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Typical Graphical display from 4 or 8-Channel Analyser
NB: Options Menu allows plotting of mV, Mol/L, pH or Temperature
and any combination of Channels; individually or together.
Graphic Tools enable wide range of options for graph styles,
e.g. 3D, bar chart, labels, axes, ticks, etc.
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3D Display of Data
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3D Bar Chart Data Display
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Other NICO 2000
Products
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