The entry model for routine pH measurements with high functionality:

• 3-point calibration with automatic buffer recognition
• 3 preprogrammed buffer sets and 1 freely definable buffer set
• Automatic or manual temperature compensation
• Automatic or manual measured data collection
• Simultaneous indication of pH/mV and temperature as well as electrode condition (zero point, gradient) and the calibrating buffers used
• RS232 interface
• With electrode arm, free standing or for fitting o the left or right
• Mains or battery operation
• 21 CFR Part 11 conform

SevenEasy conductivity, basic conductometer

The entry model for conductivity measurements with high functionality:

• 1-point calibration with automatic recognition of the calibrating standard (84 µS/cm, 14.13 µS/cm, 12.88 mS/cm)
• Specification of the calculated cell constants
• Entry of known cell constants
• 2-pole or 4-pole cells can be used
• Selectable reference temperature (20 or 25°C)
• Linear or non-linear temperature compensation
• Temperature compensation can be deactivated for measurements according to USP <645>
• Automatic or manual measured value collection
• Simultaneous indication of conductivity and ttemperature as well as cell constants and calibrating standard used
• Selectable measured value: conductivity, salinity, TDS
• RS232 interface
• With electrode arm, free standing or for fitting on the the left or right
• Mains or battery operation
• 21 CFR Part 11 conform

SevenMulti high-performance instruments

SevenMulti is a modular system for measuring pH value/Redox potential, conductivity/salinity/TDS and ion concentration. The basic instrument can be combined as required with up to 2 measuring modules. The high flexibility and functionality of the components satisfy all requirements imposed on a high-performance laboratory instrument. Upgrading into a 2-channel instrument is possible at any time

SevenMulti basic instrument

This instrument provides extensive functions for user-friendly working with all measurement variables.

• Backlit graphics-capable dot matrix display
• Easy-to-understand plain text user prompting with Help menu in various languages (German/English/French/Italian/Spanish)
• Bidirectional RS232 interface, optional USB interface
• Optional TTL interface for control of stirrers and sample changers
• Password protected GLP menu
• Alphanumeric entry of instrument, user and sample ID
• IDs can also be read in with an optional barcode reader
• Programmable upper/lower limit values
• Data memory per measurement channel for 10 calibrations, 10 methods and 1000 measured values
• Data logger (data storage manual or interval-controlled)
• Manual, automatic or time-controlled measured value collection
• Calibrating timer (time-controlled or according to number of collected measured values)
• Graphic presentation of the last 25 measured values with limit values
• Graphic presentation of the sensor characteristic curve
  

SevenMulti pH module

Expansion module for measuring pH value and Redox potential

• Automatic 1- to 9-point calibration
• 5 preprogrammed buffer sets
• 1 freely programmable buffer set
• Selectable resolution 0.1/0.01/0.001 pH
• Relative mV measuring mode for Redox measurement
• Automatic temperature compensation with Pt1000 or NTC 30 kΩ

SevenMulti conductivity module

Expansion module for measuring conductivity, salinity, TDS and specific resistance

• 1-point calibration with automatic recognition of the cailbrating standard (84 µS/cm, 14.13 µS/cm, 12.88 mS/cm, NaCl saturated, user-defined)
• Specification of the calculated cell constants
• Entry of known cell constants
• 2-pole or 4-pole cells can be used
• Selectable reference temperature (20 or 25°C)
• Linear or non-linear temperature compensation
• Temperature compensation can be deactvated for measurement according to USP <645>
• USP <645> table stored, programmable USP factor

SevenMulti pH/ion concentration module

Expansion module for measuring concentration with ion-selective and gas-sensitive electrodes as well as pH value and Redox potential. Same feature as the pH module, plus:

• 2- to 9-point calibration for concentration determination
• Storage of calibrating data with sensor ID and serial number for up to 10 sensors
• Measuring methods: direct potentiometry, standard addition/subtraction, sample addition/subtraction

SevenMulti pH/ISFET module

Expansion module for measuring the pH value with ISFET sensors (InLab® 490)

(ISFET = ion-selective field effect transistor)