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| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 58 |
| Type | Portable |
| Measurement Principle | Clark-type polarographic electrode |
| DO Range (mg/L) | 0–20 mg/L |
| DO Resolution (mg/L) | 0.01 mg/L |
| DO Accuracy (mg/L) | ±0.03 mg/L |
| DO Range (% air saturation) | 0–200% |
| DO Resolution (% sat) | 0.1% |
| DO Accuracy (% sat) | ±0.3% |
| Temperature Range | −5 to +45 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.3 °C |
| Temp Compensation Range | 0 to +45 °C |
| Salinity Compensation Range | 0–40 ppt |
| Salinity Compensation Accuracy | ±0.3% of compensated reading ±1 digit |
| Recorder Output | 0–1 V DC (0.5 V = 1 digit), ±0.4% full scale ±1 least significant digit, min. load 50 kΩ |
| Power | 4 × D-cell batteries (Zn-C or alkaline), ~1000 h life |
| Dimensions | 21.6 × 28.0 × 9.5 cm |
| Weight | 1.90 kg |
| Brand | WTW |
|---|---|
| Model | TresCon COD-3250 |
| Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion (High-Temperature Closed-System) |
| Wavelength | 620 nm |
| Range | 20–5000 mg/L COD |
| Accuracy | ≤ ±10% at ≥30 mg/L |
| Repeatability | ≤ ±3% |
| Detection Limit | Not Specified |
| Cycle Time | 35 min per sample |
| Sample Throughput | 1 sample per cycle |
| Compliance | Designed to meet GB 11914-1989 and HJ 399-2007 requirements |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 6920DW / 600DW |
| Residual Chlorine | 0–3 mg/L (±15% of reading or ±0.05 mg/L, whichever is greater |
| resolution | 0.01 mg/L) |
| Conductivity | 0–100 mS/cm (±0.5% of reading + 0.001 mS/cm |
| resolution | 0.001–0.1 mS/cm, range-dependent) |
| Temperature | −5 to +70 °C (±0.15 °C |
| resolution | 0.01 °C) |
| pH | 0–14 (±0.2 |
| resolution | 0.01) |
| ORP | −999 to +999 mV (±20 mV |
| resolution | 0.1 mV) |
| Turbidity | 0–1000 NTU (±2% of reading or ±0.3 NTU, whichever is greater |
| resolution | 0.1 NTU) |
| Data Storage | Up to 150,000 readings |
| Power Options | Rechargeable battery or AC adapter |
| Compliance | US EPA verified (residual chlorine sensor), USGS & DoD validated, ETVP-certified (Environmental Technology Verification Program) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | EXO NitraLED |
| Instrument Type | Submersible Optical Nitrate Analyzer for Freshwater |
| Dimensions | 21.3 cm (L) × 1.5 cm (D) |
| Weight | 0.07 kg |
| Measurement Unit | NO₃–N (mg/L) |
| Light Source | Dual UV LED (235 nm & 275 nm) |
| Optical Path Length | 10 mm |
| Range | 0–10 mg/L-N |
| LOD | 0.005 mg/L-N |
| Accuracy | ±0.1 mg/L-N or ±5% of reading (whichever is greater) within ±2 °C |
| T95 Response Time | <30 s |
| Drift (30-day deployment, 15-min logging) | ≤0.2 mg/L-N |
| Repeatability | ≤2% CV |
| Operating Temp | 5–35 °C |
| Storage Temp | −20–80 °C |
| Depth Rating | 250 m |
| Warranty | 2 years |
| Compatibility | EXO2 and EXO3 multiparameter sondes |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TCU/A111 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Ammonia Gas-Sensing Electrode |
| Measurement Range | 0.1–1000 mg/L NH₃–N |
| Accuracy | ≤ ±5% FS |
| Detection Limit | 0.1 mg/L NH₃–N |
| Analysis Time | 3 minutes per sample |
| Sample Throughput | 1 sample per cycle |
| Compliance | Certified per China EPA Environmental Protection Product Certification (HJ 758–2015) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | ProQuatro |
| Instrument Type | Portable/Handheld Water Quality Analyzer |
| Measured Parameters | Dissolved Oxygen (DO), Electrical Conductivity, Specific Conductivity, Salinity, Resistivity, Barometric Pressure |
| Dimensions | 8.3 cm × 21.6 cm × 2.3 cm |
| Weight (with batteries) | 475 g |
| Power Supply | Two C-cell alkaline batteries (80 h runtime at ambient temperature, backlight off) or micro-USB power input |
| Operating Temperature | −10 °C to +60 °C |
| Storage Temperature | −20 °C to +70 °C |
| Display | Backlit graphical LCD |
| Memory Capacity | 5,000 data sets with 50 unique ID tags |
| Data Logging Modes | Single-point or continuous logging with auto-stability detection |
| Cable Options | Field cables (1, 4, 10, 20, 30 m) |
| Barometer Range | 375–825 mmHg |
| Accuracy | ±1.5 mmHg (0–50 °C) |
| Resolution | 0.1 mmHg |
| DO Membrane Response Time (T95) | 8 s (1.25 mil PE, flow = 0.15 m/s), 17 s (2.0 mil PE, flow = 0.08 m/s), 18 s (1 mil Teflon®, flow = 0.30 m/s) |
| Ingress Protection | IP67 (submersible even with battery door open) |
| Warranty | 3 years instrument, 2 years cables |
| Certifications | RoHS, CE, FCC |
| Language Support | English, Simplified/Traditional Chinese, French, German, Italian, Japanese, Norwegian, Portuguese, Spanish |
| Brand | Xylem |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | EMM550 |
| Instrument Type | Online Water Quality Analyzer |
| Buoy Construction Material | Surlyn®-based Ionomeric Foam |
| Structural Design | Modular, Symmetric Circular Hull with Integrated Ballast Chamber |
| Certified Compliance | NOAA NDBC & USCG Approved Buoy Platform |
| Deployment Class | Coastal, Estuarine, and Inland Open-Water Long-Term Monitoring |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Chlorine 3017M |
| Instrument Type | Online Analyzer |
| Measurement Principle | DPD Spectrophotometry |
| Measured Parameters | Free Chlorine, Total Chlorine, Chlorine Dioxide (optional reagent configuration) |
| Range | 0–5 mg/L (free or total chlorine, reagent-dependent) |
| Accuracy | ±0.03 mg/L or ±5% (whichever is greater) |
| Resolution | 0.01 mg/L |
| Detection Limit | 0.03 mg/L |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 6600EDS |
| DO Range (sat.) | 0–500% (±2% or 2% sat., whichever greater, 0–200%) |
| DO Range (mg/L) | 0–50 mg/L (±2% or 0.2 mg/L, 0–20 mg/L) |
| Conductivity | 0–100 mS/cm (±0.5% + 0.001 mS/cm) |
| Temperature | −5 to 50 °C (±0.15 °C) |
| pH | 0–14 (±0.2) |
| ORP | −999 to +999 mV (±20 mV) |
| Salinity | 0–70 ppt (±1.0% or 0.1 ppt) |
| Depth (shallow/medium/deep) | 0–9 m (±0.018 m) / 0–61 m (±0.12 m) / 0–200 m (±0.3 m) |
| Barometric Pressure Compensated Water Level | 0–9 m (±0.003 m) |
| Turbidity | 0–1000 NTU (±2% or 0.3 NTU) |
| Chlorophyll-a | 0–400 µg/L (LOD: 0.1 µg/L |
| Rhodamine WT | 0–200 µg/L (±5% or 1.0 µg/L) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TriOxmatic |
| Instrument Type | Online Water Quality Analyzer |
| Measured Parameter | Dissolved Oxygen (DO) |
| O₂ Concentration Ranges | 0.0–60.0 mg/L (TriOxmatic® 700 IQ), 0.00–20.00 mg/L (701 IQ), 0.001–2.000 mg/L (702 IQ) |
| O₂ Saturation Ranges | 0–600 %, 0.0–200.0 %, 0–110 % |
| Resolution | 0.1 mg/L / 0.01 mg/L / 0.001 mg/L |
| Response Time (t₉₀) | 180 s (700 IQ), 30 s (701/702 IQ) |
| Minimum Flow Rate | 0.05–0.3 m/s |
| Temperature Compensation | Integrated NTC, –5 to +60 °C |
| Accuracy | ±0.1 mg/L or ±1% of reading |
| Electrode Materials | Stainless Steel 316, Titanium, POM (for seawater) |
| Max. Pressure Rating | 10 bar (standard), 1 bar (F-type) |
| Power Consumption | 0.2 W |
| Diagnostics | SensReg (electrolyte depletion alarm), SensLeck (membrane breach detection) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | 6820EDS / 6920EDS |
| Instrument Type | In-situ Online Water Quality Analyzer |
| DO (% air saturation) | 0–500%, ±2% or ±2% air saturation (0–200%), ±6% (200–500%) |
| DO (mg/L) | 0–50 mg/L, ±2% or ±0.2 mg/L (0–20 mg/L), ±6% (20–50 mg/L) |
| Conductivity | 0–100 mS/cm, ±0.5% + 0.001 mS/cm |
| Temperature | −5 to 50 °C, ±0.15 °C |
| pH | 0–14, ±0.2 |
| ORP | −999 to +999 mV, ±20 mV |
| Salinity | 0–70 ppt, ±1.0% or ±0.1 ppt |
| Depth (shallow) | 0–9 m, ±0.018 m |
| Depth (mid-depth) | 0–61 m, ±0.12 m |
| Barometrically Compensated Water Level | 0–9 m, ±0.003 m |
| Turbidity | 0–1000 NTU, ±2% or ±0.3 NTU |
| Rhodamine WT | 0–200 µg/L, ±1.0 µg/L or ±5% |
| Chlorophyll-a | 0–400 µg/L, LOD 0.1 µg/L, R² > 0.9999 |
| Ammonia-N / Nitrate-N / Chloride (freshwater only) | 0–200 mg N/L, ±10% or ±2 mg N/L |
| Sensor Cleaning | Integrated YSI Patented Auto-Cleaning Brush (for turbidity, DO, pH) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TCU/COD3260 |
| Measurement Principle | Acidic Potassium Permanganate Oxidation with Potentiometric Endpoint Detection (Dual Platinum Electrodes) |
| Temperature Control | 100 °C ± 1 °C |
| Detection Range | 0.5–10 mg/L O₂ (as KMnO₄) |
| Accuracy | ±5% of reading (typical, matrix-dependent) |
| Reagent Consumption | ≤3.5 mL per analysis cycle |
| Sample Flow Requirement | 0.5–2.0 L/min |
| Power Supply | 230 VAC, 50/60 Hz |
| IP Rating | IP65 (enclosure) |
| Compliance | EN ISO 8467:2022, DIN 38409-H12, EPA Method 410.2 (adapted), GLP-ready architecture |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 556MPS |
| Instrument Type | Portable Multiparameter Water Quality Analyzer |
| DO (Air Saturation) | 0–500%, Resolution: 0.1%, Accuracy: ±2% or ±2% air saturation (0–200%), ±6% (200–500%) |
| DO (mg/L) | 0–50 mg/L, Resolution: 0.01 mg/L, Accuracy: ±2% or ±0.2 mg/L (0–20 mg/L), ±6% (20–50 mg/L) |
| Temperature | −5 to +45 °C, Resolution: 0.1 °C, Accuracy: ±0.15 °C |
| Conductivity | 0–200 mS/cm, Resolution: 0.001–0.1 mS/cm (range-dependent), Accuracy: ±0.5% or ±0.001 mS/cm (4-m cable), ±1.0% or ±0.001 mS/cm (20-m cable) |
| Salinity | 0–70 ppt, Resolution: 0.01 ppt, Accuracy: ±1.0% or ±0.1 ppt |
| pH (optional) | 0–14, Resolution: 0.01, Accuracy: ±0.2 |
| ORP (optional) | −999 to +999 mV, Resolution: 0.1 mV, Accuracy: ±20 mV |
| TDS | 0–100 g/L, Resolution: 4-digit |
| Barometer (optional) | 500–800 mmHg, Resolution: 0.1 mmHg, Accuracy: ±3 mmHg (within ±15 °C of calibration temperature) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | 6820 / 6920 |
| Dissolved Oxygen (DO) | 0–500% air saturation (±2% or 2% of reading, whichever is greater, for 0–200% |
| Conductivity | 0–100 mS/cm (±0.5% + 0.001 mS/cm) |
| Temperature | −5 to 50 °C (±0.15 °C) |
| pH | 0–14 (±0.2) |
| ORP | −999 to +999 mV (±20 mV) |
| Salinity | 0–70 ppt (±1.0% or 0.1 ppt, whichever is greater) |
| Depth (Shallow) | 0–9 m (±0.018 m) |
| Depth (Medium) | 0–61 m (±0.12 m) |
| Barometric Pressure-Compensated Water Level | 0–9 m (±0.003 m) |
| Turbidity | 0–1000 NTU (±2% or 0.3 NTU, whichever is greater) |
| Chlorophyll-a | 0–400 µg/L (detection limit: 0.1 µg/L |
| Rhodamine WT | 0–200 µg/L (±5% or 1 µg/L, whichever is greater) |
| Ammonia/Nitrate (Freshwater only) | 0–200 mg N/L (±10% or 2 mg N/L, whichever is greater) |
| Chloride (Freshwater only) | 0–1000 mg/L (±15% or 5 mg/L, whichever is greater) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | DO200 |
| Instrument Type | Portable |
| Temperature Measurement Principle | Thermistor (10 kΩ @ 25 °C) |
| Temperature Range | –6 to +46 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.3 °C ±1 LSD |
| DO (% Air Saturation) Principle | Steady-State Polarographic (PE Membrane) |
| DO (% AS) Range | 0–200 % |
| DO (% AS) Resolution | 0.1 % |
| DO (% AS) Accuracy | ±2 % of reading or ±2 % air saturation, whichever is greater |
| DO (mg/L) Principle | Steady-State Polarographic (PE Membrane) |
| DO (mg/L) Range | 0–20 mg/L |
| DO (mg/L) Resolution | 0.01 mg/L |
| DO (mg/L) Accuracy | ±2 % of reading or ±0.2 mg/L, whichever is greater |
| Enclosure Rating | IP65 |
| Compensation | Automatic temperature compensation |
| Membrane Type | Next-generation fast-response, low-stirring-dependency PE membrane |
| Cable Options | 4 m or 10 m |
| Probe Construction | Stainless steel sensor with protective polymer sheath |
| Connector | Strain-relieved cable interface |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI ROX |
| Measurement Principle | Fluorescence Lifetime Detection |
| DO Range (Air Saturation) | 0–500% |
| Resolution (Air Saturation) | 0.1% |
| Accuracy (0–200%) | ±1% of reading or ±1% air saturation, whichever is greater |
| Accuracy (200–500%) | ±15% of reading |
| DO Range (mg/L) | 0–50 mg/L |
| Resolution (mg/L) | 0.01 mg/L |
| Accuracy (0–20 mg/L) | ±1% of reading or ±0.1 mg/L, whichever is greater |
| Accuracy (20–50 mg/L) | ±15% of reading |
| Membrane Life | Up to 12 months |
| Flow Independence | Yes |
| Zero-Point Calibration | Supported |
| H₂S Resistance | Yes |
| Compatibility | Fully compatible with YSI ProDSS and EXO platforms (via optical port), YSI 6-Series multiparameter sondes |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | FDO |
| Measurement Principle | Fluorescence-based (dynamic quenching) |
| Detection Parameter | Dissolved Oxygen (DO) |
| Instrument Type | Online Water Quality Analyzer |
| Compliance | Designed for continuous monitoring in wastewater treatment and environmental applications |
| Calibration | Factory-calibrated smart sensor with embedded calibration chip (IQMC) |
| Optical System | Dual-path EPRS (Equal Path Reference System) |
| Light Source | Green LED (GLT technology) |
| Sensor Geometry | 45° beveled tip for bubble rejection |
| Operating Environment | Aqueous media, activated sludge, surface water, and effluent streams |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | MPP IDS |
| Instrument Type | Portable Multi-Parameter Water Quality Sensor |
| Measurable Parameters | pH / ORP, Temperature, Dissolved Oxygen (DO), Conductivity, Turbidity |
| Probe Interface | Digital IDS (Intelligent Digital Sensor) interface supporting up to three simultaneous IDS-compatible probes |
| Brand | Xylem |
|---|---|
| Origin | USA |
| Model | YSI ProDSS |
| Instrument Type | Portable/Handheld Water Quality Analyzer |
| Sensor Interface | 4x Smart Sensor Ports |
| Display | High-Resolution Color LCD |
| Depth Rating | IP67 (submersible to 1 m for 30 min) |
| Cable Options | Up to 100 m (with or without integrated depth sensor) |
| Power | Rechargeable Lithium-Ion Battery |
| GPS | Optional Integrated Module |
| Compliance | Designed for ASTM D3370, ISO 5814, ISO 7888, USP <643>, EPA Method 180.1, and GLP-compliant field data collection |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Alyza IQ |
| Instrument Type | Online Analyzer |
| Measurement Principle | Colorimetric Method |
| Measurement Range | 0.02–20 mg/L NH₄–N |
| Detection Limit | 0.02 mg/L |
| Accuracy | MR1: ±2% ±0.02 mg/L (0.02–5 mg/L) |
| MR2 | ±3% ±0.10 mg/L (0.1–20 mg/L) |
| Integration | Fully compatible with IQ Sensor Net platform (supports IQ System 2020, 282, and 284) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | MIQ/TC 2020 3G |
| Instrument Type | Online Water Quality Analyzer |
| Measured Parameters | pH/ORP, Temperature, Dissolved Oxygen (DO), Conductivity, Turbidity, Sludge Concentration, COD/BOD/TOC/DOC/SAC/UVT, Ammonia-N, Nitrate-N, Nitrite-N, Sludge Interface, Phosphate |
| Max Sensor Channels | 20 |
| Analog Outputs & Relays | up to 48 |
| Max Total Cable Length | 1000 m |
| Data Storage Capacity | 526,600 records |
| Enclosure Rating | IP66 |
| Communication Protocols | PROFIBUS-DP, MODBUS RTU, Ethernet/IP, MODBUS TCP, PROFINET |
| USB Interface | Data export & password-protected system unlock via USB key |
| Optional Remote Connectivity | GSM/Analog modem, Wireless module |
| Calibration Support | IQ-LabLink intelligent calibration system |
| Surge Protection | Integrated lightning protection |
| Redundancy | Standby controller functionality with automatic failover to MIQ/CM3 display unit |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model Variants | PB-S/1, PB-S/R12, PB-S/R24 |
| Housing Material | Stainless Steel (IP65-rated) |
| Sampling Control Modes | Time-based & Event-triggered |
| Sample Preservation | Integrated Cooling/Heating Module |
| Sample Volume Accuracy | ±1.5% of set volume (vacuum-driven aspiration) |
| Operating Environment | -20 °C to +50 °C |
| Power Supply | 100–240 V AC, 50/60 Hz |
| Compliance | EN ISO 5667-10, ASTM D3370, EPA Method 1664 |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TetraCon LR |
| Measurement Principle | 4-Electrode Conductivity |
| Range | 1 µS/cm to 2 S/cm |
| Minimum Resolution | 0.01 µS/cm (dependent on transmitter) |
| Electrode Constant | K = 0.475 cm⁻¹ (standard), adjustable range 0.475–1.008 cm⁻¹ |
| Temperature Compensation | Built-in, -5 °C to +60 °C |
| Pressure Rating | 10 bar (20 °C) |
| Accuracy | ±2% of reading ±1 µS/cm at 25 °C |
| Response Time (t₉₀) | <20 s |
| Compliance | ISO 7888, ASTM D1125, DIN EN 27888 |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 85 |
| Probe Type | Integrated (YSI 85) or Replaceable D-Series (YSI 85D) |
| DO Range | 0–200% air saturation / 0–20 mg/L |
| DO Accuracy | ±2% air saturation or ±0.3 mg/L |
| Conductivity Ranges | 0–499.9 µS/cm, 0–4999 µS/cm, 0–49.99 mS/cm, 0–200.0 mS/cm |
| Conductivity Accuracy | ±0.5% of reading per range |
| Salinity Range | 0–80 ppt |
| Salinity Accuracy | ±2% or ±0.1 ppt |
| Temperature Range | –5 to +65 °C |
| Temp Accuracy | ±0.1 °C (±1 lsd) |
| Resolution | DO: 0.1% sat / 0.01 mg/L |
| Cond | 0.1 µS/cm to 0.1 mS/cm (range-dependent) |
| Salinity | 0.1 ppt |
| Temp | 0.1 °C |
| Data Storage | 50 readings (non-volatile memory) |
| Display | Backlit LCD |
| Enclosure | IP67-rated housing (YSI 85D with MS connector) |
| Compliance | Designed for ASTM D888, ISO 5814, USP <781>, EPA Method 4500-O G |
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