AquaQuest Spectrophotometers

Further Information

Informative Graphic Display

Menus, scans, curves and tabulated results are displayed on the large backlit LCD display with contrast control. Lists may be scrolled vertically and plots, scans and data horizontally to give an effective 550mm screen width. Shown to the right, is a typical wavelength scan which may be fully viewed by scrolling, a printout of the same scan is shown at the bottom of the page.









Integral Printer

The integral printer may be used to provide a hard copy of all experimental results. Time course plots, wavelength scans and calibration curves may also be plotted with full documentation, timed and dated for GLP. The printer is of the dot matrix type and does not require expensive heat sensitive paper. A typical printout of results is shown on the right.

Rapid Operation

Simply enter the quantitative mode and follow the menus displayed on the screen, selecting pathlength and the required analysis each at the touch of a key. The instrument is then set ready for the analysis selected.


Convenient Sampling

Insert the 16mm reaction tube or 10mm sample cell in the dual sample holder, press the 'Run' key and the result is displayed and printed as required. Other cell holders and sampling techniques may be used to suit the application.


Applications

Waste Water           Beverages           Paint

Boiler Water            Foodstuffs           Paper

Cooling Water         Chemicals            Pharmaceuticals
Drinking Water        Surface Finishing   Hydroponics
River Water            Agriculture


User Benefits

150 Pre-programmed Tests                Time Plots

Merck Spectroquant Kits                   Curve and Line Fit
User Method Storage                        Kinetics

Wavelength Scanning                       Large Backlit Screen
Integral Printer
E-SEF Software Call-Up


Performance

Self Test and Calibration                   Straylight 0.01%
Accurate to 3A                               Traceable Standards
Wavelength Setting 0.1nm                Validation software
Stability ±0.001A/H




Curve and Line Fitting

A straight line, quadratic or cubic curve may be automatically fitted to a set of up to 30 standards. Fits are possible either with an intercept or forced through zero. All entries are prompted for simplicity of operation. With the possibility of using such a large number of standards, duplicate or multiple standards may be used for any given concentration. A quadratic curve is shown here.


Editing and Storage

Any suspect standards observed by inspection of the screen display may be deleted or replaced and a new fit produced. Up to 30 curves may be stored, security protected, for future recall and processing.


Time Course Plotting

The course of any reaction with time may be followed by simply entering the mode, selecting the wavelength and entering the duration of the plot, the scale and Absorbance range as prompted.  The data will be displayed on screen or plotted and is available for reprocessing. Finally the data may be stored in security protected memory for future use.  A typical time plot on the screen is shown on the left. A printout is available by pressing the RUN key, or may be made in real time.


Reaction Kinetics

Reaction Kinetics is available with reaction plots to screen and printer. Data may be reprocessed as required. Regression analysis is applied to the user selected portion of the reaction plot and results are reported in Units/Litre.








Rapid Change Sample Holders

Sample holders take only seconds to change without the use of any tool. They are retained by two pillar thumb screws, and require no adjustment after fitting saving valuable time.


Sampling Flexibility

Some of the complete range of sampling accessories are shown. All instruments are fitted as standard with a special dual sample holder designed to accommodate both 10mm rectangular cuvettes and 16mm reaction tubes as supplied with many of the Merck test kits; time is saved as no change of holder is required when changing between the two. A holder for 10, 20 and 50mm cells is also available as are holders for rectangular or cylindrical cells, up to 100mm in length.

Sipette System

The sipette system shown in the photograph may be used to advantage when a number of samples have to be measured in sequence. All measurements are made in the same cell improving accuracy while cell handling and breakage are avoided. The Sipette pump mounts inside the sample compartment and operates under control of the spectrophotometer microprocessor system. Samples after measurement may be returned and saved, or pumped to waste.


Multi-Cell Sipette System

A cell changer designed to accommodate three cells, of 10mm, 20mm and 50mm pathlengths, connected in series speeds up the change between cells of different pathlengths when using a sipette system. This avoids cell handling and breakage.


Batch Sampling

Where large numbers of similar samples are to be measured, a batch sampler is available for up to 100 samples. The pump for the system is sample compartment mounted and under the instruments internal system control.


Automatic Cell Changers

For automatic measurements cell changers are available for 4, 6 or 8 cells and may be fully programmed for measurements.  A wavelength programme for up to 10 wavelengths is also available and may be used with a single cell or combined with a cell changer for a cell and wavelength program.  The sample changers are shown above together with a photograph of the 6 cell changer fitted to a spectrophotometer.

Analyte

Range

Unit

pl


Analyte

Range

Unit

pl










Aluminium

0.05-0.35

mg/L Al

50


Nickel

0.05 - 2.00

mg/L Ni

50

Aluminium

0.20 - 1.50

mg/L Al

10


Nickel

0.10 - 6.00

mg/L Ni

16

Aluminium

2.0-13.0

mmol/m3 Al

50


Nickel

0.20 - 5.00

mg/L Ni

20

Aluminium

7.4 - 55.6

mmol/m3 Al

10


Nickel

0.4 - 34.0

mmol/m3 Ni

50

Ammonium

0.010 - 0.620

mg/L NH4-N

50


Nickel

3.0 - 85.0

mmol/m3 Ni

20

Ammonium

0.010 - 0.800

mg/L NH4

50


Nitrate

0.11 - 3.40

mg/L NO3-N

16

Ammonium

0.10 - 2.70

mg/L NH4-N

10


Nitrate

0.20 - 5.60

mg/L NO3-N

50

Ammonium

0.10 - 3.50

mg/L NH4

10


Nitrate

0.25 - 4.50

mg/L NO3-N

50

Ammonium

0.20 - 10.00

mg/L NH4

16


Nitrate

0.5 - 15.0

mg/L NO3

16

Ammonium

0.20 - 7.80

mg/L NH4-N

16


Nitrate

0.5 - 18.0

mg/L NO3-N

16

Ammonium

0.6 - 44.4

mmol/m3 NH4

50


Nitrate

1.0 - 25.0

mg/L NO3

50

Ammonium

0.8 - 21.7

mg/L NH4-N

16


Nitrate

1.1 - 20.3

mg/L NO3-N

10

Ammonium

1.0 - 28.0

mg/L NH4

16


Nitrate

1.1 - 22.6

mg/L NO3-N

16

Ammonium

4.0 - 78.0

mg/L NH4-N

16


Nitrate

2.0 - 80.0

mg/L NO3

16

Ammonium

5 - 100

mg/L NH4

16


Nitrate

5.0 - 90.0

mg/L NO3

10

Ammonium

6 - 195

mmol/m3 NH4

10


Nitrate

5 - 100

mg/L NO3

16

Ammonium

60 - 1550

mmol/m3 NH4

16


Nitrate

8 - 242

mmol/m3 NO3

16

Boron

0.050 - 0.800

mg/L B

10


Nitrate

16 - 403

mmol/m3 NO3

50

Cadmium

0.005 - 0.300

mg/L Cd

50


Nitrate

32 - 1290

mmol/m3 NO3

16

Cadmium

0.025 - 1.000

mg/L Cd

16


Nitrate

80 - 1450

mmol/m3 NO3

10

Calcium

1.0 - 15.0

mg/L Ca

20


Nitrite

0.010 - 0.180

mg/L NO2-N

50

Calcium

5 - 160

mg/L Ca

20


Nitrite

0.02 - 1.00

mg/L NO2-N

10

Calcium

7 - 224

mg/L CaO

20


Nitrite

0.020 - 0.600

mg/L NO2

50

Calcium

13 - 4000

mmol/m3 CaCO3

20


Nitrite

0.020 - 0.610

mg/L NO2-N

16

Chloride

0.28-4.23

mol/m3 Cl

10


Nitrite

0.05 - 2.00

mg/L NO2

16

Chloride

1.0 - 20.0

mg/L Cl

20


Nitrite

0.05 - 3.00

mg/L NO2

10

Chloride

10.0-150

mg/L Cl

10


Nitrite

0.4 - 13.0

mmol/m3 NO2

50

Chloride

28 - 564

mmol/m3 Cl

20


Nitrite

1.0 - 65.0

mmol/m3 NO2

10

Chloride

5-125

mg/L Cl

16


Nitrite

1.1 - 43.5

mmol/m3 NO2

16

Chlorine

0.05 - 1.50

mg/L Cl2

50


Nitrogen

0.5 - 18.0

mg/L N

16

Chlorine

0.1 - 10.0

mg/L Cl2

10


Oxygen

0.5-12.0

mg/L O2

16

Chlorine

0.50-5.00

mg/L Cl2

10


Ozone

0.05 - 1.00

mg/L O3

50

Chlorine

0.05-1.50

mg/L Cl2

50


Ozone

0.05-1.50

mg/L O3

50

Cl dioxide

0.02 - 1.00

mg/L ClO2

50


Ozone

0.50-5.00

mg/L O3

10

Cl dioxide

0.05-1.50

mg/L ClO2

50


Phenol

0.025 - 1.500

mg/L PHE

50

Cl dioxide

0.50-5.00

mg/L ClO2

10


Phenol

0.10 - 2.50

mg/L PHE

16

Chromium

0.010 - 0.600

mg/L Cr

50


Phos(PMB)

0.01 - 11.5

mg/L P2O5

16

Chromium

0.05 - 2.00

mg/L Cr

16


Phos(PMB)

0.02 - 1.00

mg/L PO4 - P

50

Chromium

0.10 - 3.00

mg/L Cr

10


Phos(PMB)

0.05 - 2.30

mg/L P2O5

50

Chromium

0.2 - 11.5

mmol/m3 Cr

50


Phos(PMB)

0.05 - 5.00

mg/L PO4 - P

16

Chromium

2.0 - 58.0

mmol/m3 Cr

10


Phos(PMB)

0.06 - 3.00

mg/L PO4

50

COD

4.0 - 40.0

mg/L COD

16


Phos(PMB)

0.10 - 5.00

mg/L PO4 - P

10

COD

10 - 150

mg/L COD

16


Phos(PMB)

0.2 - 11.5

mg/L P2O5

10

COD

100 - 1500

mg/L COD

16


Phos(PMB)

0.2 - 15.3

mg/L PO4

16

COD

500 - 10000

mg/L COD

16


Phos(PMB)

0.3 - 15.3

mg/L PO4

10

COD

50-500

mg/L COD

16


Phos(PMB)

0.6 - 32.3

mmol/m3 PO4

50

COD

300-3500

mg/L COD

16


Phos(PMB)

1.0 - 25.0

mg/L PO4 - P

16

Copper

0.05 - 2.00

mg/L Cu

50


Phos(PMB)

2 - 160

mmol/m3 PO4

16

Copper

0.10 - 8.00

mg/L Cu

16


Phos(PMB)

3 - 161

mmol/m3 PO4

10

Copper

0.20 - 6.00

mg/L Cu

10


Phos(PMB)

3.1 - 76.8

mg/L PO4

16

Copper

0.8 - 31.5

mmol/m3 Cu

50


Phos(VM)

0.5 - 25.0

mg/L PO4 - P

16

Copper

3 - 126

mmol/m3 Cu

10


Phos(VM)

1.0 - 30.0

mg/L PO4 - P

10

Cyanide

0.002 - 0.100

mg/L CN

50


Phos(VM)

1.1 - 57.0

mg/L P2O5

16

Cyanide

0.025 - 0.500

mg/L CN

10


Phos(VM)

1.5 - 77.0

mg/L PO4

16

Cyanide

0.025 - 0.500

mg/L CN

16


Phos(VM)

2.0 - 69.0

mg/L P205

10

Fluoride

0.025 - 0.500

mg/L F

50


Phos(VM)

3.0 - 92.0

mg/L PO4

10

Fluoride

0.10 - 1.50

mg/L F

16


Phos(VM)

16 - 807

mmol/m3 PO4

16

Formaldehyde

0.025 - 2.250

mg/L HCHO

50


Phos(VM)

32 - 970

mmol/m3 PO4

10

Formaldehyde

0.1 - 10.0

mg/L HCHO

16


Potassium

5.0 - 50.0

mg/L K

16

Formaldehyde

0.02-1.80

mg/L HCHO

50


Silicon

0.010 - 0.800

mg/L Si

50

Formaldehyde

1.00-9.00

mg/L HCHO

10


Silicon

0.02 - 1.70

mg/L SiO2

50

Gold

0.5 - 12.0

mg/L Au

10


Silicon

0.10 - 5.00

mg/L Si

20

Hardness Res.

0.50-5.00

mg/L Ca

16


Silicon

0.2 - 10.7

mg/L SiO2

20

Hardness Res.

0.075-0.750

degrees Hard

16


Silicon

0.3 - 28.5

mmol/m3 SiO2

50

Hardness Tot.

0.7-22.0

degrees Hard

16


Silicon

3 - 178

mmol/m3 SiO2

20

Hardness Tot.

5-140

mg/L Ca

16


Silver

0.10 - 1.00

mg/L Ag

50

Hydrazine

0.02 - 1.00

mg/L N2H4

50


Silver

0.50 - 5.00

mg/L Ag

10

Hydrazine

0.20 - 5.00

mg/L N2H4

10


Sulphate

0.21-2.50

mol/m3 SO4

16

Hydrazine

0.6 - 31.2

mmol/m3 N2H4

50


Sulphate

20-240

mg/L SO4

16

Hydrazine

6 - 156

mmol/m3 N2H4

10


Sulphate

25 - 300

mg/L SO4

20

H peroxide

2.0 - 20.0

mg/L H2O2

16


Sulphate

100 - 1000

mg/L SO4

16

Iron

0.01 - 1.00

mg/L Fe

50


Sulphide

0.020 - 0.500

mg/L S

50

Iron

0.10 - 4.00

mg/L Fe

16


Sulphide

0.25-4.0

mg/L S

10

Iron

0.20 - 2.50

mg/L Fe

20


Sulphide

0.6 - 15.1

mmol/m3 S

50

Iron

0.2 - 18.0

mmol/m3 Fe

50


Sulphide

7.6-121.0

mmol/m3 S

10

Iron

3.6 - 45.0

mmol/m3 Fe

20


Sulphite

0.05 - 3.00

mg/L SO3

50

Iron II/III

0.2 - 20.0

mg/L Fe

10


Sulphite

1.0 - 25.0

mg/L SO3

16

Lead

0.02 - 1.50

mg/L Pb

50


Surfactants

0.05 - 2.00

mg/L a - Ten

16

Lead

0.10 - 5.00

mg/L Pb

16


Tin

0.10-2.50

mg/L Sn

16

Magnesium

5.0-50.0

mg/L Hg

16


Zinc

0.05 - 2.50

mg/L Zn

10

Manganese

0.01 - 2.50

mg/L Mn

50


Zinc

0.050 - 0.500

mg/L Zn

50

Manganese

0.2 - 46.0

mmol/m3 Mn

50


Zinc

0.20 - 5.00

mg/L Zn

16

Manganese

0.5 - 10.0

mg/L Mn

10


Zinc

0.8 - 38.2

mmol/m3 Zn

10

Manganese

9 - 182

mmol/m3 Mn

10






Examples of Preprogrammed Analyses for Merck SpectroQuant Tests:-