Lovibond · Photometer / Colorimeter

MD50 Suspended solids

Use it to measure total suspended solids in water samples from 10 to 750 mg/L TSS. It reads turbidity by the attenuated radiation method and needs no reagents. It is portable and takes round cuvettes of 13, 16 or 24 mm.

Measuring range10 - 750 mg/L TSS

Chemical methodTurbidity / Attenuated Radiation Method

Photometric range0 - 3 Abs

Photometric accuracy3 % FS (T = 20 °C – 25 °C)

IP ratingIP 67

InterfacesUSB-C, NFC (Near Field Communication)

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MD50 handheld photometer seen straight on from the front with display and keypad

Highlights

Reagent-free turbidity method for TSS

Suspended solids are measured by the turbidity / attenuated radiation method over 10 to 750 mg/L TSS. The delivery scope lists no reagents.

IP 67 rated portable housing

The instrument is rated IP 67, weighs 247 g and measures 155 x 76 x 45 mm. Environmental conditions are 5 to 50 °C.

Three round cuvette sizes accepted

Suitable vials are round cuvettes of 13 mm, 16 mm and 24 mm.

USB-C and NFC data transfer

Interfaces are USB-C and NFC. Data transfers in .csv format, and internal ring memory holds 100 data records.

Methods and ranges

The table lists its one method.

Parameter	Range	Method	Reagent
Suspended solids 24	10 - 750 mg/L TSS	Turbidity / Attenuated Radiation Method	No reagents required

Reagents & consumables

We keep these in stock for the MD50 Suspended solids. We quote part numbers per instrument on enquiry, checked against the current price list.

Standards & buffers

Calibration standards

Calibration standards, pH buffers and electrolyte solutions for calibrating the instrument.

Cells & glassware

Cuvettes & sample cells

Round cells, cuvettes and caps.

Specifications

Part number280170

OpticsLED, spectrometer sensor, interference filter (selected variants only)

Light sourceLED

WavelengthVariant specific (415, 445, 480, 515, 530, 555, 590, 630, 680)

Photometric range0 - 3 Abs

Photometric accuracy3 % FS (T = 20 °C – 25 °C)

Suitable vialsRound Cuvettes 13 mm, Round Cuvettes 16 mm, Round Cuvettes 24 mm

DisplayBacklit LCD

InterfacesUSB-C, NFC (Near Field Communication)

Data transfer format.csv

OperationFoil keypad

Auto – OFFYes

Programmabilityyes with PC software

CalibrationFactory and user adjustment - return to factory adjustment possible at any time

UpdatesFirmware and methods update

Internal storageInternal ring memory for 100 data records

Power supply2 x AA batteries Alkaline Batteries (LR6) 3V DC / 55mA

Battery life timeapprox. 5000 measurements (without backlight)

PortabilityPortable

Degree of pollution2

Maximum altitude above sea level3500 m

Environmental conditions5 - 50 °C at a relative humidity of 30 - 95 % (non-condensing)

IP ratingIP 67

ComplianceCE

Languages full user manualEnglish, German, Spanish, French, Portuguese, Italian, Dutch, Turkish, Chinese

Dimensions155 x 76 x 45 mm

Weight247 g

Warranty2-year

Delivery scope1 Instrument in Carrying case; 2 batteries (AA); 3 round cuvettes (glass) with lid and Sealing rings; 1 Screwdriver; 3 Stirring rods; 1 Syringe 10 mL; 1 Cleaning brush; 1 USB-C to USB-A cable; 1 Instruction manual; 1 Certificate (COC); 1 Warranty information

Tags and applications

Param Total suspended solids Deploy Laboratory Deploy Field / Portable Format Photometer / Colorimeter Brand LovibondApp Drinking water treatment & distributionApp Wastewater & trade effluentApp Construction site discharge

Select any tag to see every other instrument that carries it. A tag with no link is one this line does not filter on.

Downloads

PDF

MD50 Suspended solids datasheet

Lovibond · PDF · 168 KB

Common questions

What range does the Lovibond MD50 Suspended solids measure?

It measures 10 to 750 mg/L TSS. The photometric range is 0 to 3 Abs, with accuracy of 3 % FS at 20 °C to 25 °C.

Does the MD50 Suspended solids need reagents?

No. The method is turbidity / attenuated radiation, and the delivery scope states that no reagents are required.

Which cuvettes can I use?

Round cuvettes of 13 mm, 16 mm and 24 mm are suitable. The delivery scope includes three round glass cuvettes with lids and sealing rings. The sizes supplied are not stated, so ask before ordering.

What batteries does it use and how long do they last?

It runs on 2 x AA alkaline batteries (LR6), which are included. Battery life is approximately 5000 measurements without the backlight.

How do I get results off the instrument?

Connect it by USB-C or use NFC. Data transfers in .csv format. The internal ring memory holds 100 data records, and a USB-C to USB-A cable is supplied.

Can I calibrate it, and what warranty does it carry?

Calibration allows factory and user adjustment, and you can return to the factory adjustment at any time. The warranty is 2 years.