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    • Symetrica · Radiation identification · Compared

    Symetrica VeriFinder S100 vs S200 vs S300

    The S100 for long shifts on one battery, the S200 for connected reporting and reach-back, the S300 backpack for hands-free search, and the Responder for a compact, holsterable handheld.

    All four VeriFinder instruments are built on Symetrica's Discovery Technology® and pair a gamma detector with 3He-free neutron detection (standard on the S100, optional on the S200 and S300, and listed for the Responder). They differ in how they are carried, how they connect, how long they run and which crystal they use. Here are the published figures side by side.

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    Compare specs
    3 + 1Handhelds + backpack
    0.2 sInstant response to sources
    No annualCalibration required
    Symetrica VeriFinder S100 handheld radionuclide identification device
    S100Compact handheld
    Symetrica VeriFinder S200 handheld RIID with color display
    S200Connected handheld
    Symetrica VeriFinder S300 backpack radiation detector with smartphone interface
    S300Backpack
    Symetrica VeriFinder Responder compact handheld radioisotope identification device
    ResponderCompact handheld
    At a glance

    Four VeriFinders, side by side

    The figures that most often decide between them. Where a cell shows a dash, ask us for that figure.

    Swipe the table sideways →

    Model VeriFinder S100Full S100 page → VeriFinder S200Full S200 page → VeriFinder S300Full S300 page → VeriFinder ResponderFull Responder page →
    Format
    Carried asHandheldHandheldBackpackHandheld
    Described asTactical handheld radionuclide identification device (RID)High Resolution Radionuclide Identification Device (RID)Hands-Free Modular Spectroscopic Radiation Detection System with Smart ConnectivityCompact, Lightweight, Handheld Radioisotope Identification Device
    Detection & identification
    Gamma detectorNaI(Tl), 43 cm3 (2.6 in3)1.5 x 1.5 in (38.1 x 38.1 mm) crystal (NaI or LaBr)3x3 in (76.2x76.2 mm) NaI crystal1.5 x 1.5 in (38.1 x 38.1 mm) NaI crystal
    Neutron detectorLi6F/ZnS, in standard configuration S100-1N26Li:ZnS, optional6Li:ZnS 3He-free neutron blade system, optional6Li:ZnS Neutron Detector
    Effective resolution (FWHM at 662 keV 137Cs)2.2%LaBr3: 1.7%
    NaI: 2.2%    		1.6%NaI: 2.2%
    Isotope libraryIdentifies over 50 nuclides including masked and shielded casesOver 50 radioisotopes and source types in customizable library47 isotopes in a customizable library47 isotopes in a customizable library
    IdentificationExceeds ANSI N42.34Exceeds ANSI N42.34ANSI N42.53Exceeds ANSI N42.34
    Cold start time—45 s60 s75 s
    In the field
    Weight1.3 kg (2.9 lbs)2.05 kg (4.5 lb), inc. battery—2.3 lb (1.0 kg)
    Battery life14 hrs>8 hrsSingle battery: >8 hrs
    Dual battery: >16 hrs    		>8 hrs
    ConnectivityBluetooth, WiFi, USB-C4G, Wi-Fi & USB. Optional: Bluetooth, satellite phone, Ethernet—USB-C and Bluetooth
    Positioning—GPSGPS with GLONASSGPS with GLONASS
    Ingress protectionIP67 (IEC 60529)IP65 as per IEC 60529IP54. Optional: IP67 as per IEC 60529IP65 per IEC 60529
    Operating temperature-20 to 50˚C (-4 to 122˚F)-20°C to 50°C (-4°F to 122°F)-20°C to 50°C (-4°F to 122°F)-4°F to 122°F (-20°C to 50°C)
    CalibrationUp to 10 years of service without annual calibrationNo annual calibration required; 5-year calibration and service intervalNo annual calibration required; 5-year calibration and service intervalNo annual calibration required; 5-year calibration and service interval

    Effective resolution is Symetrica's figure with Discovery Technology®, the combination of its hardware and patented algorithms. Optional items and detector choices are confirmed with you when we quote.

    Which one fits

    Pick by how you work

    Each VeriFinder answers a different field question: how long you carry it, how you report, whether your hands need to be free, and how much weight you want on the belt.

    VeriFinder S100 handheld
    Compact handheld · Gamma + neutron

    VeriFinder S100

    For operators who carry a handheld through long shifts. Symetrica designed it compact, lightweight and balanced, with 14 hours of continuous operation.

    1. 0114 hrs run time on an integrated Li-ion battery
    2. 02IP67 (IEC 60529) at 1.3 kg (2.9 lbs)
    3. 03Li6F/ZnS neutron detector in the standard configuration S100-1N2 (Part # 400-0160)
    See full VeriFinder S100 page →
    VeriFinder S200 handheld RIID
    Connected handheld · Neutron optional

    VeriFinder S200

    For teams that need results in front of experts as they happen. Instant, automatically generated reports by email, and reach-back monitoring and control of in-the-field devices.

    1. 01Crystal choice: NaI or LaBr, with LaBr3 at 1.7% FWHM effective resolution
    2. 024G, Wi-Fi & USB with in-built GPS; Bluetooth, satellite phone and Ethernet optional
    3. 0345 s cold start; 1 spare battery provided as standard
    See full VeriFinder S200 page →
    VeriFinder S300 backpack with smartphone
    Backpack · Hands-free · Neutron optional

    VeriFinder S300

    For hands-free search on foot. Designed for specialist missions, including Homeland Security, CBRNe Response, Counter Terrorism, and Venue Security.

    1. 013x3 in (76.2x76.2 mm) NaI crystal at 1.6% FWHM effective resolution
    2. 02Modular gamma and/or neutron detectors that can be removed and mounted for static monitoring or mobile operations
    3. 03Android smartphone interface, GPS with GLONASS, sampling time up to 120 mins
    See full VeriFinder S300 page →
    VeriFinder Responder compact handheld
    Compact handheld · Holsterable

    VeriFinder Responder

    For responders who want a light instrument on the belt. Ergonomically balanced, comfortable for prolonged use and holsterable.

    1. 012.3 lb (1.0 kg), 3 button keypad optimized for use with one hand, gloved
    2. 0275 s from switch-on to detection, even in high background environments
    3. 03GPS with GLONASS, USB-C and Bluetooth, external AA battery caddy
    See full VeriFinder Responder page →
    Full specifications

    Every listed figure, compared

    Start with the gamma resolution each model is quoted at, then open the tabs for detection, neutron, dose rate, power and data, and the physical build.

    Gamma resolution

    Raw vs effective, FWHM at 662 keV 137Cs

    RawEffective
    VeriFinder S100NaI(Tl)
    <8%
    2.2%
    VeriFinder S200NaI crystal
    8%
    2.2%
    VeriFinder S200LaBr3 crystal
    3%
    1.7%
    VeriFinder S3003x3 in NaI crystal
    7.5%
    1.6%
    VeriFinder ResponderNaI crystal
    8%
    2.2%

    Bar length is proportional to the FWHM figure: a shorter bar means a narrower peak. Symetrica's advanced algorithms improve the effective resolution of the gamma detection system, which it credits for fast, simultaneous identification of multiple and masked isotopes.

    Swipe the table sideways →

    Gamma & IDS100S200S300Responder
    Gamma detectorNaI(Tl)1.5 x 1.5 in (38.1 x 38.1 mm) crystal (NaI or LaBr)3x3 in (76.2x76.2 mm) NaI crystal with Discovery Technology1.5 x 1.5 in (38.1 x 38.1 mm) NaI crystal
    Detector volume43 cm3 (2.6 in3)———
    Energy range (gamma)25 keV - 3 MeV25 keV – 3 MeV25 keV to 3 MeV25 keV to 3 MeV
    Raw resolution<8% FWHM at 662 keV 137CsLaBr3: 3% FWHM and NaI: 8% FWHM at 662 keV 137Cs7.5% FWHM at 662 keV (137Cs)NaI: 8% FWHM at 662 keV 137Cs
    Effective resolution2.2% FWHM at 662 keV 137CsLaBr3: 1.7% FWHM and NaI: 2.2% FWHM at 662 keV 137Cs1.6% FWHM at 662 keV (137Cs)NaI: 2.2% FWHM at 662 keV 137Cs
    IdentificationExceeds ANSI N42.34Exceeds ANSI N42.34ANSI N42.53Exceeds ANSI N42.34
    LibraryIdentifies over 50 nuclides including masked and shielded casesExceeds ANSI N42.34 with over 50 radioisotopes and source types in customizable library47 isotopes in a customizable libraryExceeds ANSI N42.34 with 47 isotopes in a customizable library
    Sampling timeUser settable from a few seconds to 60 minsUser settable from 30 s to 60 minsUser settable from 30 s to 120 minsUser settable from 30 s to 60 mins
    Response timeInstant response to sources (0.2 s) with continuous operation through temperature shock with 1GHz CPUInstant response to sources (0.2 s) with continuous operation through temperature shockInstant response to sources (0.2 s) with continuous operation through temperature shockInstant response to sources (0.2 s) with continuous operation through temperature shock
    Cold start time—45 s60 s75 s
    Functions—Simultaneous isotope detection and identification, neutron detection, spectral analysis, dose rate meter, instant online reportingIsotope detection and identification, neutron detection, spectral analysis, dose rate meter, instant online reportingIsotope detection and identification, neutron detection, spectral analysis, dose rate meter

    Swipe the table sideways →

    NeutronS100S200S300Responder
    Neutron detectorLi6F/ZnS (standard configuration S100-1N2, Part # 400-0160)6Li:ZnS Neutron Detector (optional)6Li:ZnS 3He-free neutron blade system (optional)6Li:ZnS Neutron Detector
    Helium-33He-free3He-free3He-free3He-free
    Capability252Cf 20,000 n/s @ 0.6 m/s @ 0.25 m (2 ft/s @ 10 in)252Cf 20,000 n/s @ 0.6 m/s @ 0.25 m (2 ft/s @ 10 in)252Cf 20,000 n/s @ 1.2 m/s @ 1.5 m (4 ft/s @ 5 ft)
    Moderated or unmoderated    		252Cf 20,000 n/s @ 0.6 m/s @ 0.25 m (2 ft/s @ 10 in)
    Neutron energy range0.025 eV to 15MeV0.025 eV to 15 MeV——
    Detector size2.7 cm dia. X 11 cm (1" dia. X 4.3")———
    ModeratorInbuilt neutron moderator for handheld use enables ALARP (As Low As Reasonably Practicable) - Neutron model———

    Swipe the table sideways →

    Dose rateS100S200S300Responder
    Dose rate range10 nSv/h to 900 mSv/h (1 μrem/h to 90 rem/h)1 nSv/h to 900 mSv/h (1 μrem/h to 90 rem/h)10 nSv/h to 900 mSv/h (1 μR/h to 90 R/h) 137Cs1 μrem/h to 90 rem/h (10 nSv/h to 900 mSv/h)
    Scintillator dose rate range—10 nSv/h to 1 mSv/h (1 μrem/h to 100 mrem/h) with automatic scintillator shutdown protection10 nSv/h to 1 mSv/h (1 μR/h to 100 mR/h) with automatic scintillator shutdown protection1 μrem/h to 100 mrem/h (10 nSv/h to 1 mSv/h) with automatic scintillator shutdown protection
    High dose rate mode—0.9 mSv/h to 900 mSv/h (90 mrem/h to 90 rem/h) 137Cs0.9 mSv/h to 900 mSv/h (90 mR/h to 90 R/h) 137Cs90 mrem/h to 90 rem/h (0.9 mSv/h to 900 mSv/h) 137Cs
    Maximum dose for ID1 mSv/h (100mrem/h)———
    Dose modesDosimeter / Mission Dose modes———
    Dose accuracyGamma dose accuracy of ± 10% for 137Cs———

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    Power & dataS100S200S300Responder
    BatteryIntegrated Li-ionCOTS replaceable, rechargeable Li-ion with 1 spare battery provided as standardCOTS rechargeable Li-ionIntegral, rechargeable Li-ion battery with external AA battery caddy
    Battery life14 hrs>8 hrsSingle battery: >8 hrs
    Dual battery: >16 hrs    		>8 hrs
    Power—110-240 V mains, 12-24 V car adaptor and external fast battery charger. Optional: AA battery adapter110-240 V mains and external fast battery charger110-240V mains and 12-24V car adaptor
    DockCharging & data offload dock———
    CommunicationsBluetooth, WiFi, USB-C4G, Wi-Fi & USB. Optional: Bluetooth, satellite phone, Ethernet—USB-C and Bluetooth
    Reports—PDF reports, ANSI N42.42 compliantPDF reports, ANSI N42.42 compliantAutomatically generated PDF summary reports and ANSI N42.42 compliant reports
    Positioning & mapping—GPS
    Optional: Real-time dose mapping and unit tracking at reach-back    		GPS with GLONASS
    Optional: Real-time dose mapping and unit tracking at reach-back    		GPS with GLONASS
    PC interface—Web browser interface with fully featured event viewer. Bulk event offload tool. Optional: Collated fleet event list with remote view and/or operation of in-the-field devicesWeb browser interface with fully featured event viewer. Bulk event offload tool. Optional: Collated fleet event list with remote view and/or operation of in-the-field devicesWeb browser interface with fully featured event viewer. Bulk event offload tool

    Swipe the table sideways →

    Build & upkeepS100S200S300Responder
    Physical & interface
    Weight1.3 kg (2.9 lbs)2.05 kg (4.5 lb), inc. battery—2.3 lb (1.0 kg)
    Dimensions29.2 x 11.8 x 11 cm (11.5 x 4.6 x 4.3 in)———
    Display / interface3.5 in. (8.9 cm) displayColor, transflective and active matrix LCDAndroid Smartphone
    Optional: Forearm / chest mountable smartphone case    		Color, transflective and active matrix LCD
    Keypad—3 button, optimised for use with one hand, gloved—3 button, optimized for use with one hand, gloved
    Alerts—Audio, tactile (vibration), LED and display alertsAudio, tactile (vibration) & display alertsAudio, tactile (vibration) and display alerts
    Environment & standards
    Ingress protectionIP67 (IEC 60529)IP65 as per IEC 60529IP54
    Optional: IP67 as per IEC 60529    		IP65 per IEC 60529
    Operating temperature-20 to 50˚C (-4 to 122˚F)-20°C to 50°C (-4°F to 122°F)-20°C to 50°C (-4°F to 122°F)-4°F to 122°F (-20°C to 50°C)
    Relative humidity—Up to 93% relative humidity, non-condensing, 35°C (95°F)Up to 93% relative humidity, non-condensing, 40°C (104°F)Up to 93% relative humidity, non-condensing, 95°F (35°C)
    Standards listedANSI N42.34, ANSI N42.42, IEC 62327, IEC 62755Exceeds ANSI N42.34; ANSI N42.42 compliant reportsANSI N42.53; ANSI N42.42 compliant reportsExceeds ANSI N42.34; ANSI N42.42 compliant reports
    Calibration & health
    Stabilization & health monitoringAutomatic and continuous end-to-end digital calibration and health monitoringAutomatic and continuous end-to-end digital calibration, stabilization and health monitoringAutomatic and continuous end-to-end digital calibration [±0.5% at 662 keV], stabilization and health monitoringAutomatic and continuous end-to-end digital calibration, stabilization and health monitoring
    Annual calibrationNot requiredNot requiredNot requiredNot required
    ServiceUp to 10 years of service without annual calibration5-year calibration and service interval5-year calibration and service interval5-year calibration and service interval
    FAQ

    Comparing VeriFinders

    The questions buyers ask most when choosing between the S100, S200, S300 and Responder.

    Which VeriFinder models detect neutrons?
    All four can. The S100 carries a Li6F/ZnS neutron detector in its standard configuration, S100-1N2 (Part # 400-0160). On the S200 the 6Li:ZnS neutron detector is optional, and the S300 backpack takes modular gamma and/or neutron detectors, with the neutron blade system optional. The Responder lists a 1.5 x 1.5 in NaI crystal and a 6Li:ZnS neutron detector in its configuration. Every neutron detector in the family is 3He-free. Tell us whether you need gamma only or gamma and neutron when you request a quote.
    Which one has the narrowest gamma peaks?
    By the published effective resolution at 662 keV 137Cs, the S300's 3x3 in NaI crystal is quoted at 1.6% FWHM and the S200 with a LaBr crystal at 1.7%. The S100, the S200 with a NaI crystal, and the Responder are each quoted at 2.2%. Raw resolution ranges from 3% (S200, LaBr3) to 8% (NaI handhelds). See the resolution chart.
    How large is each isotope library?
    Symetrica states the S100 identifies over 50 nuclides including masked and shielded cases. The S200 library exceeds ANSI N42.34 with over 50 radioisotopes and source types. The S300 and the Responder list 47 isotopes in a customizable library.
    Do any of them need annual calibration?
    No. All four run automatic and continuous end-to-end digital calibration and health monitoring, with no annual calibration required. The S200, S300 and Responder list a 5-year calibration and service interval; Symetrica states the S100 offers up to 10 years of service without annual calibration.
    Which one runs longest on a charge?
    The S300 backpack lists >16 hrs with dual batteries (>8 hrs on a single battery). Among the handhelds, the S100 lists a run time of 14 hrs on an integrated Li-ion battery, and the S200 and Responder each list >8 hrs; the S200 ships with 1 spare battery as standard, and the Responder has an external AA battery caddy.
    Which one suits reporting results from the field?
    It depends on how you report. The S200 has 4G, Wi-Fi and USB as standard with in-built GPS, emails instant and automatically generated reports, and supports reach-back monitoring and control of in-the-field devices. The S300 emails instant and automatically generated PDF reports, uses an Android smartphone as its interface and has GPS with GLONASS. Both offer real-time dose mapping and unit tracking at reach-back as an option. The S100 lists Bluetooth, WiFi and USB-C plus a charging & data offload dock, and the Responder lists USB-C and Bluetooth with GPS with GLONASS.
    How do the S100 and the Responder differ?
    Both are compact handhelds pairing a NaI gamma detector with a 3He-free neutron detector, at 2.2% effective resolution. Their listed figures differ: the S100 is 1.3 kg (2.9 lbs) with a 14 hrs run time, IP67 and Bluetooth, WiFi and USB-C; the Responder is 2.3 lb (1.0 kg), holsterable, with >8 hrs battery life, IP65, USB-C and Bluetooth, and GPS with GLONASS.
    How rugged are they?
    All four list an operating temperature of -20 to 50 °C (-4 to 122 °F). Ingress protection is IP67 (IEC 60529) on the S100, IP65 on the S200 and Responder, and IP54 on the S300 with IP67 as an option. Symetrica lists fully functional and accurate operation through temperature shock for the family.
    Can the S300 detectors be used without the backpack?
    Yes. The modular gamma and/or neutron detectors can be easily removed from the backpack and mounted for a wide range of alternative applications, including static monitoring or mobile operations. See the VeriFinder S300 page for details.
    Next step

    Not sure which VeriFinder fits?

    Tell us the mission, whether you carry the instrument in hand or on your back, and how your team reports results. We will confirm the right model and configuration with you and put a quote together.

    Request a quote
    Call 210.566.1857
    Or email sales@farrwest.com

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