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AL800

Water and waste water testing
330 – 900 nm

Gallery

The images can be downloaded here as a zip. archive in high resolution.

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  • al800
  • al800

Highlights

  • 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

Description

AL800

The AL800 is a modern single-beam spectrophotometer with an excellent price/performance ratio that is specifically designed for water testing.

AQUALYTIC AL800The 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).

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 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.

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).

Optics

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 on.AL800 Optics illustration

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).

Multifunctional sample chamber

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.

N.I.S.T. Traceability

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 standards.
(N.I.S.T. = National Institute of Standards and Technology)

Catalogue extract

The Cat­a­logue ex­tract for the AL800 with more in­for­ma­tion, tech­ni­cal data and order codes can be down­load­ed as a PDF » AL800 PDF