Photometer and Fluorometer MD 640: Water Chemistry and Fluorescence Measurement in one Instrument
Applications of Lovibond Reagents » 
Reagents for Photometry »
Reagents also suitable for use in Hach® (Disclaimer) devices »
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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