Flow Solution FS3700

OI Analytical Continuous Flow Analyzer

OI Analytical Continuous Flow Analyzer

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SKU330000


The FS3700 Continuous Flow Analyzer offers efficiency and flexibility, with the reproducibility and precision you need.

  • Overview

    Continuous Flow Analysis for a Variety of Industries

    Automating Wet Chemistry Analysis, for Every Industry.

    The FS3700 is a multi-parameter benchtop instrument that measures several critical parameters like ammonia, nitrate, nitrite, phosphorous and silica, TKN and more. 

    Multi-Channel Methods

    Different flow methods, including SFA (segmented flow analysis), FIA (flow injection analysis), iSFA, and SFIA can be ran on different system channels simultaneously. 

    Interchangeable Chemistry Cartridges

    The FS 3700 utilizes interchangeable, pre-assembled chemistry cartridges for maximum versatility and ease of use. Each chemistry cartridge is configured with all of the components needed to perform each validated analysis method.

    Plug and Play Technology 

    The FS 3700 comes standard with two detector boards, each capable of supporting photometric, amperometric, ion-selective electrodes, and third-party detectors out of the box. This provides additional flexibility to tailor methodology for research or quality control processes while utilizing fluorescence, flame photometric, or other detectors.

    Validated Methods 

    OI Analytical validates the hardware configuration and performance of every method supplied with the FS 3700 analyzer, providing users a total analysis solution. Methods for aqueous samples, soil, or plant extracts are available to support environmental compliance monitoring, process optimization, and research applications.

    Easy Data Retrieval and Exportation

    The FS3700 features an open benchtop layout, an intuitive software platform, and a USB port for data retrieval and exporting purposes.

    Powerful Software Capabilities

    FlowView Software

    The intuitive FlowView software is unparalleled in competitive systems. Designed for 32- or 64-bit Windows® operating systems, FlowView’s improved user interface streamlines scheduling, operation, and report generation from the FS 3700. The icon-driven user interface simplifies navigation and helps new users quickly become proficient.


    • On-the-fly sequence editing and calibration monitoring

    • LIMS-compatible import/export with user-friendly, customizable report generation

    • New, refined algorithms for peak detection, baseline handling, and carry-over correction

    • System configuration and method parameters are archived with the data in each result file

    • Unparalleled access to instrument comp

    Interchangeable Chemistry Cartridges

    The FS 3700 utilizes interchangeable, pre-assembled chemistry cartridges for maximum versatility and ease of use. Each chemistry cartridge is configured with all of the components needed to perform each validated analysis method. Just attach the pump tubing and detector flow cell and you are ready to go.

    The FS 3700 runs up to 2 channels simultaneously, each with its own cartridge, with additional channel configurations available. Modular, flexible hardware provides a great platform for research, in-house or proprietary methods.

    Plug-in Detector Modules

    The FS 3700 comes standard with two detector boards, each capable of supporting photometric, amperometric, ion-selective electrodes, and third-party detectors out of the box. This provides additional flexibility to tailor methodology for research or quality control processes while utilizing fluorescence, flame photometric or other detectors. Refinements in detector design have improved signal-to-noise ratio and doubled sensitivity.

    The Expanded RangeTM photometric detector and auto-scaling software virtually eliminate off-scale samples. Calibration curves can span four orders of magnitude, providing accurate results the first time — without the need for additional injections or an autodilutor.

    Advanced Continuous Flow Analysis

    The FS3700 is a multiparameter benchtop instrument that measures several critical parameters like ammonia, nitrate, nitrite, phosphorus, silica, TKN, and more. The unit comes standard with two detector boards, each capable of supporting photometric, amperometric, ion-selective electrodes, and third-party detectors out of the box. This provides flexibility to tailor methodology for research or quality control processes.

    Flexible and Modular Continuous Flow AnalysisFlexible and Modular Design

    The unique, modular design of the FS 3700 gives the system superior flexibility. Different flow methods, including SFA (segmented flow analysis), FIA (flow injection analysis), iSFA and SFIA can be run on different channels on the system simultaneously.

    A variety of pre- configured chemistry cartridges and industry-leading detectors can be utilized with plug-and-play ease. Multiple systems can be linked to provide additional channels of concurrent analysis.

    Methods for aqueous samples, soil or plant extracts are available to support environmental compliance monitoring, process optimization and research applications. Validated Methods

    OI Analytical validates the hardware configuration and performance of every method supplied with the FS 3700 analyzer, providing users a total analysis solution. Methods for aqueous samples, soil, or plant extracts are available to support environmental compliance monitoring, process optimization, and research applications.

    The FS3700 features an open benchtop layout, and intuitive software platform, and a USB port for data retrieval and exporting purposes.Easy Data Retrieval and Exportation

    The FS3700 features an open benchtop layout, an intuitive software platform, and a USB port for data retrieval and exporting purposes, making FS3700 the easiest to use and most cost-effective way to measure the following chemistries in a wide range of application areas:

    The FS3700 Continuous Flow Analyzer provides extreme flexibility and versatility for any laboratory. If you’re interested in learning how the FS3700 fits in your industry, check out our industry pages.

  • Specifications
    FS 3700 Specifications  
    Analysis Module 1 or 2 chemical analysis channels per chassis
    Analysis Module Dimensions 31 in. W x 17.5 in. D x 10.5 in. H
    78.74 cm W x 44.45 cm D x 26.67 cm H
    FS 3700 Dimensions with 90-position Autosampler Approximately 44 in. (112 cm) W
    FS 3700 Dimensions with 360-position Autosampler Approximately 51.5 in. (131 cm) W
    Injection Valve 8 or 10-port switching valve with chemically-inert wetted surfaces
    Photometric Detector 420-880 nm, with PEEK path lengths of 5-, 10- or 20-mm
    Amperometric Detector Silver working electrode
    silver/silver chloride reference
    stainless steel counter electrode
    In-line Heater Included as needed, mounted underneath chemistry cartridge
    user programmable in 1 ̊C increments
    UV-digestion Module Included as needed, mounted underneath chemistry cartridge
    Peristaltic Pump 24-channel, fits on top of analysis module
    Autosampler 90-position, X-Y-Z (90 samples + 9 standards)
    360-position, X-Y-Z (360 samples + 10 standards)
    Tubing FEP Teflon® and EVA ethylene-vinyl acetate copolymer
    Manifolds / Fittings Polysulfone
    Analysis Methods / Documentation Validated chemistries for specific analytes / sample matrices with performance data
    Operating Software FlowView
    Operating System Windows® 7, Windows® 8, 8.1 and 10
    Data Collection 6 channels per instance of software
    Multiple instances of software can be run on a single computer
    PC to FS 3700 Communications USB
    Power Supply 24VDC universal switching power supply for operation with 90-250VAC 50/60Hz source
    Power Requirements 110VAC/60 Hz or 230VAC/50 Hz
    Weight (Analysis Module) 19.5 kg (43 lbs.), typical for analysis module and pump, two injection valves, chemistry cartridges, detector modules
    Certifications CE Safety EN 61010-1
    EMC Immunity & Emissions EN 61326-1:2006
  • Video

    FS3700 Continuous Flow Analyzer | OI Analytical

    FS3700 Continuous Flow Analyzer | OI Analytical

    OI Analytical Continuous Flow Analyzer

    OI Analytical Continuous Flow Analyzer

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