Spectrophotometer AL800

Spectrophotometer AL800
Water and waste water testing
330 - 900 nm
The AL800 is a modern single-beam spectrophotometer with an
excellent price/performance ratio that is specifically designed
for water testing.
The instrument is equipped with a wide range of pre-programmed methods based on the proven range of AQUALYTIC® tube
tests, tablet reagents, liquid reagents and powder reagents
(Vario Powder Packs).
➲ Please see pages 34 onwards for
tests, ranges and reagents
The AL800 is a single-beam spectral photometer (see illustration).
The light source is a tungsten halogen lamp with flash function.
The lamp is switched on only momentarily during of the measurement process1), so there is no need for a warm-up period.
The AL800 is ready to perform a self-test as soon as it is switched
The light passes through an entry slot to the monochromator,
where it is split into spectral ranges. The monochromator is a
holographically produced, transparent grating. The movable
mirror ensures that light of the desired wavelength is focused
automatically so that it passes through the exit slot, into the
sample chamber and therefore through the water sample. The
light that is not absorbed by the sample travels to the silicon
photodiode detector. This signal is then evaluated by a microprocessor and shown as a result in the display.
1) (Exception: permanent light is used for a wavelength scan).
■ Interface RS232
■ Large illuminated display
■ Touch-sensitive film keypad
with logical layout
■ Use of round vials and rectangular
cells of different sizes without adapter
■ 35 user-specific methods
■ Fast, easy lamp change
■ Update via Internet
Regularly updated information: www.aqualytic.de
General Catalogue April 2015
Multifunctional sample chamber
Choice of language
Round vials measuring 16 mm and 24 mm in diameter and rectangular cells with pathlengths from 10 to 50 mm may be used
without an adapter. Only the 10 mm cell will be fixed by a little
holder that must inserted into the sample chamber.
The user prompt in the display can be switched to German,
English, French, Italian, Spanish, Portugese or Polish. If further
languages are available they can be updated via internet.
N.I.S.T. Traceability
New methods
Test methods are continuously updated to suit market requirements.
You can find updates for new methods and
additional languages on our website at
This spectrophotometer can be calibrated using a Secondary
Standard Filter Set (order code 711160) which is N.I.S.T. traceable. Furthermore the instrument may be calibrated for each
method in a "user calibration mode” with N.I.S.T. traceable
(N.I.S.T. = National Institute of Standards and Technology)
Printer/PC connection
■ Pre-programmed AQUALYTIC® methods
■ Absorption
■ Transmission
■ Spectral data recording
■ User calibration (polynomials)
■ Concentration (linear)
■ Kinetics
On the back of the AL800 photometer, there is an RS232
interface with a 9-pin D-Sub connector for connection of a PC
or a printer with serial interface (see accessories).
Printing data
Every result is printed with date, time, reg. no, code no.,
measuring range and method number.
Storing data
After it is switched on, the AL800 automatically performs a selftest – beginning with a function test of the stepper motor and
the halogen lamp, followed by an optics test. For this purpose,
the unit has a built-in didymium glass filter. This filter checks the
correct wavelength setting. If the wavelengths are incorrect,
the optical system is automatically adjusted during the self-test.
Thanks to the design of the AL800, the only maintenance that is
required is replacement of the light source. The lamp is situated
at the back of the photometer in an easily accessible position.
Changing the lamp is fast and simple and does not require any
tools. The positioning of the assembly ensures optimum focusing of the halogen lamp.
You can store results of programmed and user-specific
methods (polynomials) in a memory with a capacity of
1000 data sets. Alongside the result, the data sets contain
information on method, date and time of the test.
User prompt
The user prompt is a convenient and easy to understand
feature that guides the user step by step all the way through to
the test result.
Power supply
The required input voltage is 12 V.
The AL800 is connected to an external power pack as standard. Battery operation is also possible by using an external
energy station (see accessories).
■ Waste Water
■ Drinking Water
■ Industrial Process Water
■ Scientific & Research
■ Governmental and Private
General Catalogue April 2015
1) Tungsten halogen lamp
4) Sample chamber
2) Monochromator
5) Silicon photodiode
3) Movable mirror
6) Microprocessor unit
Spectrophotometer AL800
Differentiation of results
The AL800 allows differentiated tests for certain methods.
With the Chlorine method, for example, differentiated
measurement is possible for free, combined and total chlorine.
The AL800 is ideal for routine laboratory use and is equipped
with additional functions for user-specific applications. One
example is the creation of a user-defined method for a routine
Spectral data
A wavelength scan is performed over the user-defined interval
between 330 and 900 nm.
The display shows the graph of the spectrum; if the user presses
a key, the display also shows a data list with the corresponding
maximum and minimum absorption levels.
Using this function, the operator can, for example, carry out
measurement of standards with different concentrations using
the user-selected wavelength in order to obtain the data
pairs required for a polynomial. Result output is in Abs and %
With the help of an external mathematical program, the
corresponding polynomial is created from data pairs (concentration/absorption). A known polynomial may also be used.
25 order polynomials (y = A+Bx+Cx2 +Dx3 +EX4 + FX5) can be
stored together with user-specific parameters such as wavelength, measuring range, unit and number of decimals.
Zero calibration and measurements
The user chooses the desired method either from the method
list in alphabetical order or by entering a numerical code. If
desired additional information like the required vial, the reagent type and the measuring range can be displayed using
the functional keys. The date and time are shown in the display
by pressing the "clock key". The AL800 automatically selects the
correct wavelength.
This function can be used to measure 2 to 14 known standards.
On the basis of the concentrations/absorption pairs obtained,
the photometer will calculate a linear interpolation between
the measured points. Up to 10 methods can be stored for further sample measurements.
Zero calibration is performed with the water sample by pressing
the ZERO key.
A characteristic coloration develops when you add the
indicator to the water sample. Press the [Test] key to initiate the
measurement (which starts either immediately or after the time
required for colour development).
Countdown function
With some methods, after adding the indicator to the water
sample, the user has to wait for a predefined colour reaction
time. This time interval is shown in the display. The remaining
time is displayed continuously. An alarm sounds during the last
10 seconds of the time periode. Measurement then starts automatically, and the result is shown in the display. The countdown
function can be switched off to allow rapid processing of a
series of samples.
Regularly updated information: www.aqualytic.de
General Catalogue April 2015
Technical data
Wavelength range
330 to 900 nm
Photometric range
-0.3 to 2.5 Abs
Spectral bandwidth 10 nm
±2 nm
±1 nm
Light source
Pre-adjusted tungsten halogen lamp
Holographic grating
Silicon photodiode
sample chamber
Round vials
24 and 16 mm Ø,
Rectangular cells
10-50 mm
Backlit LCD graphic display
Language options
German, English, French, Italian, Spanish, Portugese
Storage capacity
1000 test data sets
Serial interfaceRS232
(L x W x H)
270 x 275 x 150 mm
approx. 3.2 kg
Power supply
Input:100 - 240 V ~
1.0 A 50 - 60 Hz
Output: 12 V .... 30 W
Replacement halogen lamp
Magnetical pin (for updates)
Connection cable to a PC
Connection to a 12 V plug
Case for transport
Universal adapter for sockets
Secondary standard set
Plastic funnel with handle
Cleaning cloth for vials
Power supply unit
100-240 V / 50-60 Hz
Power station,
230 V / 50 Hz
with cable for connection
7110 00
12 round vials with lid
Height 48 mm, 24 mm Ø
5 round vials with lid
Height 48 mm, 24 mm Ø
10 round vials with lid
Height 90 mm, 16 mm Ø
Vial stand for 6 round vials
Ø 24 mm, acrylic glass
Vial stand for 10 vials (Ø 16 mm or 13,5 mm), acrylic glass
W 100, rectangular cell
optical glass OG,
10 mm path length
W 100, rectangular cell
optical glass OG,
50 mm path length
W 110, rectangular cell
10 mm path length
Paper printer DPN 2335
with power pack (230 V, 50 Hz)
connection cable and one
paper roll
Arsenic glass apparatus370500
delivery content:
Erlenmeyer flask
Glass stopper
Absorption tube
additionally required (not included, please order separately):
W 100, cell, Optical-Glass-OG,
20 mm path length
Spectrophotometer 330 - 900 nm
complete with power supply unit (100-240 V, 50-60 Hz), two
batteries for keeping data and serial cable for connection to a
PC (D9F-D9M).
Order code: 4712000
Spectrophotometer 330 - 900 nm
in case as above, with energy station, replacement lamp,
12 round vials with lid (height 48 mm, ø 24 mm),10 round vials
with lid (height 90 mm, ø 16 mm), W 100 rectangular cell (50
mm path length),
W 100 rectangular cell (10 mm path length), plastic stirring rod,
but without reagents.
Order code: 4712005
We would be pleased to quote a ready to use spectrophotometer unit for the parameters and required accessories.
➲ Please see pages 34 onwards for
tests, ranges and reagents
General Catalogue April 2015