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FAQ

  • Q Are you looking for a reliable portable oil in water monitoring probe for field and online water oil content testing?

    A

    Probest POIL-700 UV fluorescence oil sensor paired with PMI800-OIL host solves the pain points of traditional oil detection:

    ✅ UV fluorescence principle, no chemical reagents, no sample dilution

    ✅ IP68 SUS316L submersible probe with auto-cleaning to cut maintenance cost

    ✅ High precision: 0.01mg/L resolution, measurement range 0–50mg/L

    ✅ Handheld ergonomic design, built-in rechargeable battery, USB charging & data export

    ✅ Over 100,000 data logs for environmental compliance reporting

    ✅ Anti-ambient light optical filter, stable measurement under outdoor sunlight

    Perfect for real-time monitoring of surface water, groundwater, drinking water sources and industrial wastewater discharge outlets. Suitable for environmental law enforcement, EHS daily inspection and oil spill emergency field testing.

    We support customized cable length and full calibration service. Contact us for technical datasheet & quotation.

    #OilInWaterAnalyzer #WaterQualityMonitoring #UVFluorescenceSensor #EnvironmentalInstrument #WastewaterMonitoring

  • Q Is the underwater oil probe waterproof for long-term immersion?

    A

    Is the underwater oil probe waterproof for long-term immersion?

    PROBEST POIL-700 probe reaches IP68 full waterproof grade, SUS316L stainless steel body adapts to long-term underwater immersion monitoring.

  • Q Does the PROBEST portable oil monitoring system support data export?

    A

    Does the PROBEST portable oil monitoring system support data export?

    The PMI800-OIL host stores over 100,000 records, supports USB interface data export for environmental monitoring reports.

  • Q What water bodies can this PROBEST portable oil content monitoring probe test?

    A What water bodies can this PROBEST portable oil content monitoring probe test?

    Suitable for surface water, groundwater, drinking water, industrial wastewater and pollution discharge outlets oil content monitoring.

  • Q Is the Probest POIL-700 probe compatible with other analyzer hosts?

    A  Is the Probest POIL-700 probe compatible with other analyzer hosts?

    The Probest probe is matched exclusively with PMI800-OIL portable host, the system can automatically identify the connected oil sensor and switch reading interface automatically.

  • Q Can the PROBEST oil in water probe work continuously for online monitoring?

    A Can the Probest oil in water probe work continuously for online monitoring?

    Yes, the Probest portable oil monitoring probe supports continuous real-time measurement, equipped with auto cleaning function to meet long-term online deployment demands.

  • Q What detection principle does this PROBEST portable oil in water monitoring probe adopt?

    A What detection principle does this PROBEST portable oil in water monitoring probe adopt?

    POIL-700 oil monitoring probe uses ultraviolet fluorescence method, detects petroleum aromatic hydrocarbon fluorescence signal to calculate oil concentration in water, no reagent needed.

  • Q What's the Wide Application Scenarios of Portable Oil In Water Monitoring Probe?

    A Wide Application Scenarios of Portable Oil In Water Monitoring Probe
    This oil in water monitoring probe is a standard water quality testing sensor for environmental protection, water treatment and industrial wastewater industries, applicable scenes include:
    1. Surface water real-time oil content online monitoring (rivers, lakes, reservoirs);
    2. Groundwater & drinking water source oil pollution early warning detection;
    3. Industrial pollution source wastewater discharge oil emission monitoring;
    4. Oil spill emergency field rapid sampling measurement;
    5. Environmental law enforcement portable spot inspection;
    6. Water plant, petrochemical plant circulating water oil concentration continuous monitoring.

  • Q What's the Core Advantages of POIL-700 Oil In Water Monitoring Probe?

    A Core Advantages of POIL-700 Oil In Water Monitoring Probe
    • Portable Matching Design for PMI800-OIL Host: Ergonomic handheld host with anti-slip wristband, the oil in water monitoring probe auto identifies connected host, automatic reading interface adaptation;
    • UV Fluorescence Optical Sensor, Low Maintenance: Auto cleaning function reduces manual maintenance frequency, SUS316L probe body anti-corrosion for long-term underwater deployment;
    • High Precision & Stable Testing: 0.01mg/L high resolution, ≤±10% or ±0.3mg/L measurement accuracy, ≤±5% repeatability for reliable oil content data;
    • Complete Data Recording System: The whole portable oil monitoring system stores over 100,000 test records, USB one-click data export for environmental reporting;
    • Flexible Field Operation: Built-in rechargeable battery, USB direct charging without battery removal, short response time to support continuous real-time measurement;
    • Strong Environmental Adaptability: IP68 probe protection rating, IP67 host, working temperature 0–45℃, storage temperature -15~50℃, 3m standard extendable cable for deep water monitoring;
    • Anti-interference Optical Technology: Exclusive light filtering structure blocks sunlight and indoor light disturbance, suitable for outdoor open-air water sampling monitoring.

  • Q Working Principle of Portable Oil in Water Monitoring Probe?

    A Working Principle of Portable Oil in Water Monitoring Probe

    POIL-700 oil in water monitoring probe applies UV fluorescence detection technology, the core testing principle of mainstream water oil sensors in environmental monitoring industry.
    1. Built-in low-power LED ultraviolet light source irradiates water samples;
    2. Aromatic hydrocarbons in petroleum pollutants absorb UV light and generate characteristic fluorescence signals;
    3. Unique optical & electronic filtering eliminates ambient light interference;
    4. Convert fluorescence intensity into standard oil concentration value (0–50mg/L NDSA) via built-in algorithm;
    5. Transmit data to PMI800-OIL portable host for real-time display, storage and export.
    No reagents, no dilution, zero secondary pollution, stable long-term operation for field and online oil-in-water monitoring.

  • Q Does PROBEST pH meter support two kinds of calibration buffer?

    A
    1. Does PROBEST pH meter support two kinds of calibration buffer?
    A: Yes, two optional buffer groups:4.0/6.86/9.18 &4.0/7.0/10.01, big advantage for multi-industry test.

  • Q What are the advantages of Probest’s pH water quality sensor with dual calibration mode?

    A
    What are the advantages of Probest’s pH water quality sensor with dual calibration mode?
     
    1.    Suitable for testing scenarios across various industries: Select calibration solutions as needed for different pH conditions in food, environmental wastewater, chemical, and purified water applications;
    2. Significantly improves pH measurement accuracy through targeted calibration for slightly acidic, neutral, and slightly alkaline samples, thereby reducing measurement errors;
    3.    Compatible with the two mainstream pH standard buffer solutions on the market, offering convenient procurement and greater versatility.

  • Q Q9: If the mV reading on a PROBEST pH water quality analyzer falls far outside the standard range during calibration, what are the possible causes?

    A Q9: If the mV reading on a PROBEST pH water quality analyzer falls far outside the standard range during calibration, what are the possible causes?

    Answer:
    Check items: aged or damaged pH electrode, expired buffer solution, uncleaned electrode with residual buffer, drastic ambient temperature fluctuation.

  • Q Q8: When using the PROBEST pH electrode on a daily basis, is it okay to switch frequently between the two calibration modes?

    A Q8: When using the PROBEST pH electrode on a daily basis, is it okay to switch frequently between the two calibration modes?
    Answer：Users can switch two calibration modes anytime via instrument menu according to daily test samples.

  • Q Q7: What practical benefits does PROBEST’s dual-standard calibration design offer users?

    A Q7: What practical benefits does PROBEST’s dual-standard calibration design offer users?

    Answer:
    High versatility: Compatible with two mainstream commercial pH buffers on the market, more flexible for buffer purchasing and cost saving;
    Higher testing precision: Match calibration buffer with sample pH property to minimize measuring error;
    Multi-industry availability: One PROBEST pH meter meets testing needs of wastewater, food, chemical and pure water industries.

  • Q Q6: During the calibration wait phase, when can I click “Confirm” to save the current calibration with the standard solution?

    A Q6: During the calibration wait phase, when can I click “Confirm” to save the current calibration with the standard solution?

    Answer:
    Submerge and stir electrode gently in buffer, wait until mV reading is fully stable, then tap confirm to finish single-point calibration.

  • Q Q5: How should the PROBEST electrode be prepared before each calibration with a new standard buffer solution?

    A Q5: How should the PROBEST electrode be prepared before each calibration with a new standard buffer solution?

    Answer: Rinse electrode fully with clean water and blot residual water with lint-free tissue before next buffer calibration to avoid cross-contamination and inaccurate calibration.

  • Q Q4: When calibrating the 6.86, 4.0, and 9.18 standard solutions, what mV reading is considered within the normal range of PROBEST pH sensor?

    A Q4: When calibrating the 6.86, 4.0, and 9.18 standard solutions, what mV reading is considered within the normal range of PROBEST pH sensor?

    Answer:
    • pH6.86 buffer: mV reading within ±15 mV is normal;
    • pH4.0 buffer: Normal reading around 170 mV±20mV;
    • pH9.18 buffer: Normal reading around 120 mV±20mV.
    Abnormal mV values mean expired buffer, dirty or damaged pH electrode.

  • Q Q3: What is the sequence of steps for a three-point pH calibration using PROBEST?

    A Q3: What is the sequence of steps for a three-point pH calibration using PROBEST?
    Answer:
    1. Enter pH calibration menu and select target pH channel;
    2. Choose your preferred buffer mode;
    3. Rinse electrode with clean water and blot dry with lint-free tissue;
    4. Complete calibration in turn: middle buffer → acid buffer → alkaline buffer; rinse & dry electrode before every new buffer;
    5. Confirm each point to finish full 3-point calibration. The video uses 6.86→4.0→9.18 as demonstration sequence.

  • Q Q2: What are the appropriate applications for each of the two PROBEST pH calibration buffers?

    A Q2: What are the appropriate applications for each of the two PROBEST pH calibration buffers?

    Answer:
    1. Buffer set (4.0,6.86,9.18): National standard general buffer, widely used for wastewater, environmental water and general lab & chemical testing;
    2. Buffer set (4.0,7.0,10.01): Centered at neutral pH7.0, ideal for pure water, food & beverage, electroplating solution and neutral-based samples.
    Switch modes as needed to improve test accuracy for samples of different pH ranges.

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