Archive for the ‘Turbidity’ Category

TB 250 WL

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TB250 WL – Compact Lovibond® White Light Turbidity Meter

    • “White Light” source turbidity meter
    • Range from 0.01 to 1100 NTU
    • EPA turbidity measurement (standard 180.1)
    • Auto-Ranging feature
    • Regulatory monitoring, process control & field use


The TB 250 WL allows easy turbidity measurement in either the field or in the laboratory. Using a “White Light” source and 90° detection, theTB 250 WL meets the specifications for EPA turbidity measurement (EPA standard 180.1). A powerefficient micro-circuit design allows the instrument to yeild 5000 tests on alkaline batteries with an estimated 7 to 10 year bulb life. Intergrated diagnosits confirm proper operation and accuracy. The instrument provides an Auto-Range feature that automatically slects the correct turbidity range for the sample

Calibration is simple with the included calibration standards. The instrument comes with all required items for testing including the TB 250 WL Turbidimeter, sample curvettes, batteries, calibration set, operators manual and carrying case.

Instrument in sturdy handycase 3 turbidity standards (0.2, 10, and 1000 NTU)
4 AA battery 2 sample vials (&#216 24 mm) with lids
12 month warranty Certificate of Compliance
Instruction Manual


Technical Data
Display Large LCD display
Keypad 5 key polycarbonate membrane, splash proof
Power supply 4 AA Alkaline batteries for approx. 20 hr continuous operation or up to 3500 tests
Range (Auto-range) 0.01 to 1100 NTU
Accuracy ± 2% of reading or ± 0.01 NTU (0 to 500 NTU), ± 3% (500 to 1100 NTU)
Resolution 0.01 to 99.99 NTU = 0.01 NTU, 100.0 to 999.9 NTU = 0.1 NTU, 1000 to 1100 NTU = 1 NTU
Housing ABS
Dimensions 210 (L) x 95 (W) x 45 (H) mm
Weight (base unit) approx. 0.45 kg
Ambient conditions Temperature: 0 to 50 °C rel. humidity 0 to 90%
EC-Conformity CE

TB210 IR

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TB210 IR – Compact Lovibond® Infrared Turbidity Meter

    • Fast, precise, on-site testing
    • Range from 0.01 to 1100 NTU
    • Coloured and colourless liquids
    • EN ISO 7027 compliant
    • ≥600 tests per battery life


The compact Lovibond® infrared turbidity meter TB 210 is designed to allow fast, precise on-site testing. The unit measures the scattered light at an angle of 90°, as stipulated in EN ISO 7027.

The wide measuring range from 0.01 to 1100 TE/F = NTU = FNU makes the instrument suitable for various applications, ranging from drinking water to waste water.

As infrared is used to measurement purposes, the unit can be used to test both coloured and colourless liquids.

The standards required for calibration of the unit are also supplied. A second adjustment mode allows alternative adjustment with user defined turbidity standards

Instrument in case 4 turbidity standards (< 0.1, 20, 200 and 800 NTU)
9V battery 3 vials (&#216 24 mm) with lids
12 month warranty Certificate of Compliance
Instruction Manual


Technical Data
Measurement cycle Approx. 8 seconds
Display Backlit LCD (on keypress)
Optics Temperature compensated LED (&#955= 860 nm) and photosensor amplifier in water proof sample chamber, infrared light
Keypad Polycarbonate membrane, splash proof
Power supply 9V power pack & battery
Auto – OFF Automatic power off
Storage Internal ring memory for 16 data sets
Additional features Real time clock and date
Range (Auto-range) 0.01 to 1100 NTU
Resolution 0.01 to 9.99 NTU = 0.01 NTU, 10.0 to 99.9 NTU = 0.1 NTU, 100 to 1100 NTU = 1 NTU
Accuracy ± 2.5% of reading or ± 0.01 NTU (0 to 500 NTU), ± 5% (500 to 1100 NTU)
Housing ABS
Dimensions 190 (L) x 110 (W) x 55 (H) mm
EC-Conformity CE


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      • Highest/reproducible precision with interference filter.
      • Display with background lighting.
      • More than 120 pre-programmed methods.
      • Automatic selection of wavelength.
      • Over 120 testing methods.
      • User guidance in German, English, French, Spanish, Italian, Portuguese (BR), Polish, and Indonesian.
      • Buffer for up to 1000 data records.
      • More than 35 user-specific methods possible.
      • User interface in English, German, French, Spanish, Italian, Portuguese(BR), Polish & Indonesian.
      • Bluetooth® interface for connection to smart phones and tablets.
      • iOS® and Android™ app for data management and email delivery.
      • Waterproof housing.*
      • Handheld format, portable.


The MD610 gives you a mobile device in a modern design with the analytical features of a laboratory photometer. All important water analysis parameters from A(luminium) to Z(inc) are covered. Combined with the high precision of Lovibond® reagents, a reliable and quick analysis of water samples is guaranteed. Reagent tablets, powder reagents, liquid reagents, or cuvette tests are used depending on the method.

Six long-lasting LEDs serving as a light source in combination with interference filters guarantee the highest precision.

The device is designed without moving optical parts and thus has a maintenance free measuring unit. Up to 1,000 data records can be stored on the MD610.

Verification standard kit

Verification standard kit


The AquaLX® app, available free of charge, offers the possibility of transferring measurements to smart phones or tablets via Bluetooth®. The data management then enables analysis and export as a CSV file or graph via email. The app is available free of charge for AndroidTM and iOS®.


The IRIM (Infra-red data transmission module) uses modern infra-red technology to transmit data from the MD610 to one of 3 optional interfaces. This allows the MD610 to be connected to a computer or printer. For more information on the IRIM click here.


The verification standard kit for the MD 610 is designed to assure the user of the accuracy
and the reliability of the results related to the integrated wave lengths. The shelf life of the verification standard kit is
two years from the date of production, provided that storage and use are in accordance with the instructions provided.

For enquiries please email:


For a full list of available parameters click here.


Backlit graphical display
Bluetooth® 4.0,
Infra-red interface for test data transfer**,
RJ45 socket for internet updates***
LED’s, interference filters (IF) and photo sensor in transparent sample chamber.
Wavelength range:
430 nm IF Δλ = 5 nm
530 nm IF Δλ = 5 nm
560 nm IF Δλ = 5 nm
580 nm IF Δλ = 5 nm
610 nm IF Δλ = 6 nm
660 nm IF Δλ = 5 nm
IF = interference filter
Wavelength Accuracy:
± 1 nm
Photometric Accuracy****:
2% FS (T = 20°C – 25°C)
Photometric Resolution:
0.005 A
Acid and solvent resistant, touch-sensitive keypad with audible feedback via integrated beeper
Power supply:
4 AA batteries
Operation time:
approx 26 hours continuous or 3500 tests
Approx 20 minutes after last key press with audible signal
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
English, German, French, Spanish, Italian, Portuguese, Polish, Indonesian; additional languages available via internet download
Up to 1000 data sets

* Analog IP 68, 1 Stunde bei 0,1 Meter
** IRIM infra-red interface module required for data transmission
*** Conection cable with integrated electronics required
*** Tested with standard solutions

DTK Water
14 Morris Close,
Park Farm Ind Est,
T: +44 (0)1604 686995
F: +44 (0)1604 686997