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md640

MD 640

Photometer and Fluorometer MD 640: Water Chemistry and Fluorescence Measurement in one Instrument

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Highlights

Inbuilt PTSA & Fluorescein measurement – no adapter required

  • High quality results due to interference filters and long-life LEDs
  • Automatic wavelength selection
  • Bluetooth® data transmittance to Lovibond® AquaLX® App
  • Covers more than 120 important methods for water analysis such as aluminium, chlorine, COD, bromine, chlorine dioxide, copper, iron, molybdate and phosphate
  • Advanced data management via AquaLX® App
  • Portable and easy handling
  • One time zero
  • Data storage for 500 data sets
  • Robust, water proof design
  • Backlit display

*) as defined in IP 68, 1 hour at 0.1 meter 

The Lovibond® MD 640 is an enhanced version of the MD 610 photometer, offering additional fluorescence capability for the determination of PTSA and fluorescein in water systems. PTSA (1,3,6,8 pyrenetetrasulfonic acid, sodium salt) and fluorescein are fluorescent materials that are increasingly being added to speciality water treatment products to enable real time product dose analysis. Both materials are detectable at ppb levels, are non-toxic and chemically stable, all of which make them ideal tracer additives throughout complex water systems. Accurately measuring product dose levels helps the water treatment specialist to control water chemistry; prevent corrosion, scale and biological fouling; increase system efficiency and, ultimately, save energy and costs.

Delivery Content

  • Instrument in carrying case
  • 4 batteries
  • 3 round vials each 24 and 16 mm ø (black lid)
  • 1 adapter each for 16 mm and 13 mm vials
  • Plastic stirring rod 13 cm, Brush 11 cm, syringe 5 ml, screw driver
  • Warranty information
  • Certificate of Compliance Instruction Manual
  • Order codes (without reagents)
    MD 640: 21 41 40 Please specify the reagents or parameters required at time of order.

Display Backlit graphic-display
Interfaces Bluetooth® 4.0
RJ45 socket for
Internet update1
Optics LEDs, interference filters (IF) and photo sensor in transparent sample chamber
Wavelength range:
430 nm IF ∆ λ = 5 nm
530 nm IF ∆ λ = 5 nm
560 nm IF ∆ λ = 5 nm
580 nm IF ∆ λ = 5 nm
610 nm IF ∆ λ = 6 nm
660 nm IF ∆ λ = 5 nm
IF = interference filter
UV excitation 375 nm
Measurement Ranges PTSA 10 – 1000 ppb
Fluorescein 10 – 400 ppb
Calibration Check Monthly (user)
(using calibration sets)
Calibration Factory set & user adjustable (using calibration Standard Set)
Wavelength Accuracy ± 1 nm
Photometric Accuracy* 2% FS (T = 20°C – 25°C)
Photometric Resolution 0.005 A
Operation Acid and solvent resistant, touch-sensitive keypad with audible feedback via integrated beeper
Power Supply 4 batteries (Mignon AA/LR6);
Operation time:
approx. 26 h continuous operation or 3500 tests
Auto-Off approx. 20 minutes after last keypress with audible signal
Dimensions approx. 210 x 95 x 45 mm (unit)
approx. 395 x 295 x 106 mm (case)
Weight (unit) approx. 450 g
Ambient Conditions 5 – 40°C at max. 30 – 90%
rel. humidity (non condensing)
Language Selection German, English, French, Spanish, Italian,Portuguese, Polish, Indonesian ; additional languages via Internet update
Memory Capacity approx. 500 data sets
CE-Conformity

 

1 optional available: connection cable with integrated electronics (RS 232 / RJ-45 plug)

* tested with standard solutions

Item Code
Set of 12 round vials with lidHeight 48 mm, Ø 24 mm 19 76 20
Set of 12 round vials with black lid for PTSA / Fluorescein
Height 48 mm, Ø 24 mm
19 76 57
Set of 10 round vials with lid Height 90 mm, Ø 16 mm 19 76 65
Adapter for round vials ø 16 mm 19 80 21 90
Adapter for round vials ø 13 mm 19 80 21 92
Set of multy vials-3 with lidspath length 10 mm, 10 ml volume
Height 48 mm, Ø 24 mm (12 pc.)
19 76 05
Vial stand for 6 round vialsØ 24 mm, acrylic glass 41 89 51
Vial stand for 10 vials (Ø 16 mm or 13,5 mm), acrylic glass 41 89 57
Sealing ring for vial ø 24 mm (12 pc.) 19 76 26
Battery, 1.5 V, AA-Alkali-Mangan (4 pc.) 19 50 025
Cleaning cloth for vials 19 76 35
Plastic funnel with handle 47 10 07
Plastic stirring rod, 13 cm length 36 41 00
Plastic stirring rod, 13 cm length, (10 pc.) 36 41 20
Plastic stirring rod, 10 cm length 36 41 09
Plastic stirring rod, 10 cm length, (10 pc.) 36 41 30
Cleaning brush, 10 cm 38 02 30
Verification Standard Kit 21 56 40
Cable for update for connection to a PC 21 40 30
PTSA standard addition solution, 1000 ppb, 50ml 46 12 10
PTSA calibration set (0, 200, 1000 ppb) 46 12 45
Fluorescein standard addition solution, 400 ppb, 50ml 46 12 30
Fluorescein calibration set (0, 75, 400 ppb) 46 12 40

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