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STS Instruments SMF4 Portable Fluorimeter

Technical Specification

Instrument Dimensions

  • Size including carrying handle 18 x 30 x 15 cm

  • Weight including batteries 2.2 Kg

  • Splash proof sealing


 Instrument Features

  • LCD Display 93 x 70 mm

  • Dimmable Backlight

  • Internal rechargeable batteries

  • Alphanumeric & Navigation Keypads

  • Cell holder and Cover

  • Internal Memory data capture of up to 2000 sample records

  • Automated serial sample data recording


Instrument Function Menu

The instrument menu is accessible from the keypad and offers the following user defined settings:


Data Input                   -will allow specific sample number and location information to be attached to                                          a sample record.  Each sample captures a unique ID number, date, time and                                   reading in addition to the 2 user definable parameters.


Set Sensitivity             -the instrument has 3 sensitivity settings accommodating a wide range of                                                 Tryptophan concentrations. Concentrations can be measured from 0.025ppm                                           to 25.0ppm Tryptophan.


Backlight                     -may be set to desired intensity as light conditions require and will automatically                                       be turned off after 5 minutes of inactivity to preserve battery life.


 Auto Sampling            -using a flow cell and pump the instrument may be set up to carry out a series                                           of measurements over a specified period at user defined intervals. The results                                         may be written to either the internal memory or to an external data logger.


                                    The internal memory is capable of storing approximately the following:


                                                1.3 days sampling at 1min intervals

                                                20 days sampling at 15min intervals

                                                83 days sampling at 1hr intervals

                                                250 days sampling at 3hr intervals


Internal Memory         -may be downloaded via an RS232 port. A 9 pin RS 232 to RS232 / USB                                                   output is provided to connect the SMF4 to either a PC or data logger.  PC                                     requires Windows 98/2000/XP/7.  The internal memory may also be cleared                                              using the download function.


Set Date/Time             -date and time are set in dd/mm/yy and hh/mm



Battery Information

The SMF4 is powered by NiMH rechargeable batteries, which give a useful operating period of approx 30hrs with the backlight on. When logging in sleep mode at hourly intervals the battery life is approximately 4 weeks.  Approx 8hrs full recharge time required using provided charger.

Battery life is shown by a battery level indicator icon on the LCD display.


Sample Cell

Cell holder accepts standard fluorescence cells of 10 x 10 x 40 mm either Quartz or UV Plastic

Cell holder and cover will accommodate flow through cells for auto sampling.

Data Storage 

No Reagents

Light Weight

Rechargeable Battery 

Fast Results 

Our products are all manufactured in the UK.

Contact us for a quote or to find your nearest distributor.

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