Water Quality Analysis
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| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop-i IS 6 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure-Difference Method |
| BOD Range | 0–4000 mg/L |
| Sample Channels | 6 per system |
| Compliance | CE, EMC |
| Operating Temperature Compensation | Automatic (1–3 h delay based on sample temperature) |
| Pressure Measurement Range | 500–1250 hPa |
| Data Logging Interval | 0.5 h to 180 days |
| Bottle Volume | Fixed (standard 250 mL or 500 mL brown glass bottles) |
| Stirring Base | Integrated, continuous magnetic stirring |
| Display & Interface | 3-button operation, LED status indicator per measurement head |
| Optional Controller | Multi 3620/3630 IDS SET WL for remote configuration and real-time curve visualization |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop-i IS6 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Difference Method (Mercury-Free Pressure Sensor) |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | ≤1 mg/L |
| Accuracy | ±10% (relative to certified reference standards) |
| Measurement Duration | 2–28 days (user-definable incubation period) |
| Incubation Temperature | 20 °C default, adjustable from 15–30 °C |
| Repeatability | ≤5% RSD |
| Channel Capacity | 6 independent measurement channels per unit |
| Compliance | CE, EMC Directive 2014/30/EU |
| Power Supply | Included |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop-IS6 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Difference Method (Manometric) |
| Measurement Range | 2–4000 mg/L |
| Detection Limit | 2 mg/L |
| Accuracy | ±5% |
| Incubation Duration | 5-day standard test |
| Repeatability | ±3% |
| Operating Temperature | +5 to +50 °C |
| Display | Dual-digit 7-segment LED (10 mm), 00–50 range |
| Pressure Sensing Range | 500–1100 hPa |
| Accuracy of Pressure Reading | ±1 digit (±3.55 hPa) |
| Power Supply | 2×CR2430 lithium batteries (280 mAh total) |
| Max Current Draw | 25 mA (during display activation) |
| Safety Rating | Category III per IEC 61010-1 |
| Ingress Protection | IP54 per DIN 40050 |
| Dimensions | 69 mm H × 70 mm Ø |
| Compliance | DIN 38409-52 (BODₙ determination) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop® Control B/BM Soil Respiration Analyzer |
| Measurement Principle | Pressure-based CO₂ consumption/respiration monitoring via headspace oxygen depletion |
| Container Options | MG 1.0 (1000 mL) or PF 45/500 (500 mL) sealed vials with integrated OxiTop®-C stoppers or AD/SK adapters |
| Data Logging | Autonomous, battery-powered, up to 60 days continuous measurement per cycle |
| Output | mg O₂/L·d or µmol CO₂/g soil·h (calculated) |
| Compliance | Designed for ISO 11274, ISO 17402, OECD 207, ASTM D5988, and EU Regulation (EC) No 1107/2009 biodegradation testing protocols |
| Origin | Imported |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Differential (O₂ Consumption + CO₂ Absorption) |
| Measurement Range | 0–5000 mg/L |
| Detection Limit | 500 mg/L |
| Accuracy | ±1 mg/L |
| Single Sample Measurement Time | 8 min |
| Repeatability | ±3% |
| Compliance | DIN EN 1899-1, DIN EN 1899-2, EPA Method 5210B, GLP/GMP-ready |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | WTW OxiTop®-i IS 6 BOD |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Manometric Respirometry (CO₂-absorbed pressure differential method) |
| Measurement Range | 0–40 mg/L (standard), up to 4,000 mg/L (via sample dilution or reduced volume) |
| Accuracy | <10% deviation from reference value |
| Repeatability | ≤ ±2.8% RSD |
| Measurement Duration | Programmable from 1 to 7 days |
| Sample Capacity | 6 independent channels |
| Display | Individual LCD graphic display per sensor head |
| Temperature Compensation | Automatic thermal equilibration delay (1–3 h) |
| Units | mg/L O₂, ΔhPa, hPa, digit |
| Compliance | Designed for ISO 5815-1:2019, EN 25815, and APHA Standard Methods 5210 B |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop®-IDS B6/B6M/B6M2.5 |
| Measurement Principle | Pressure Differential Method |
| Application | Soil Respiration, Biodegradability Testing, BOD Analysis (Lab-Based) |
| Compliance | DIN EN ISO 16072:2011-09 |
| Sample Volumes | 500 mL / 1.0 L / 2.5 L (B6M2.5) |
| Pressure Range | –500 to 1350 hPa (up to 1500 hPa with OxiTop®-IDS/B sensor head) |
| Data Logging Interval | 0.5 h to 180 days |
| CO₂ Absorbent Included | Yes |
| Nitrification Inhibitor Included | Yes (B6/B6M/AN series) |
| Stirring Base | IS 6 / IS 12 / IS 6-Var / IS 12-Var |
| Required Controller | Multi 3620 IDS Set WL or Multi 3630 IDS Set WL (except OxiTop®-IDS Set 6/12, which operates autonomously) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | P 700IQ |
| Measurement Principle | Vanadomolybdate Photometric Colorimetry (PO₄–P) |
| Range 1 | 0.05–15.00 mg/L PO₄–P |
| Range 2 | 1–50 mg/L PO₄–P |
| Resolution | 0.05 mg/L (Range 1), 1 mg/L (Range 2) |
| Accuracy | ±2% or ±0.05 mg/L (Range 1), ±2% or ±1 mg/L (Range 2) |
| t₉₀ Response Time | <5 min |
| Minimum Measurement Interval | Adjustable to <5 min |
| Sample Temperature | 4–45 °C |
| pH Range | 5–9 |
| Operating Temperature | –20–40 °C |
| Storage Temperature | –20–50 °C |
| Reagent Consumption | 2500 mL per 8 months (Range 1), 2500 mL per 4 months (Range 2), 1000 mL cleaning solution per 4 months |
| Power Supply | 115/230 V AC |
| Dimensions | 678 × 780 × 395 mm |
| Weight | ~30 kg (excl. reagents) |
| Outputs | Analog (4–20 mA), IQ SENSOR NET 2020XT interface |
| Certifications | CE, cETLus |
| Enclosure Rating | IP65 (integrated cabinet) |
| 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 | PC-2200/2300 |
| Particle Size Range | 0.5–100 µm |
| Dimensions | 120 × 355 × 114 mm |
| Weight | 2.7 kg |
| Power Supply | 230 VAC / 50 Hz |
| Sample Vial ID | 15–60 mm inner diameter |
| Vial Material | Optically clear, scratch-free borosilicate glass |
| Calibration Standards | NIST-traceable, argon-sealed polystyrene microsphere suspensions (3 vials), certified stability >10 years |
| Software | SuperCount (real-time particle count, mean diameter, mass distribution, % distribution, standard deviation, TSS estimation) |
| Origin | Imported |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameters | pH, mV, ISE (Ion-Selective Electrode), Temperature |
| Calibration Options | 2–7 point ISE calibration, non-linear ISE applications |
| Display | Backlit LCD |
| Enclosure Rating | IP67 |
| Power Supply | 4 × AA alkaline or 4 × NiMH rechargeable batteries |
| Data Storage | Manual (200 entries) or automatic (5,000 entries), configurable logging interval |
| Compliance | GLP-compliant data handling, audit-ready timestamped records |
| Connectivity | Waterproof USB interface |
| CMC (Continuous Measurement Control) | Real-time calibration and measurement integrity monitoring |
| Operating Temperature Range | –5.0 to +105.0 °C (±0.1 °C accuracy) |
| pH Range | –2.000 to +19.999 (±0.005 pH accuracy) |
| mV Range | –2500 to +2500 mV (±1 mV accuracy) |
| ISE Range | 0.000–9.999 / 10.00–99.99 / 100.0–999.9 / 1000–999999 (unit-dependent |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | photoLab 7000 |
| Instrument Type | Laboratory Water Quality Analyzer |
| Detection Parameters | Ammonia-N, Volatile Phenols, COD, Heavy Metals |
| Wavelength Range | 190–1100 nm (UV-VIS) |
| Optical Resolution | ±1 nm (typ.), <0.5 nm (FWHM) |
| Photometric Accuracy | ±0.003 E (E < 0.600), ±0.5% (0.600 < E < 2.000) |
| Scan Speed | 700–2000 nm/min |
| Cuvette Compatibility | Automatic barcode recognition for 10 mm, 20 mm, and 50 mm rectangular cuvettes |
| Data Storage | 5,000 measurements, 500 spectra, 400 kinetic curves |
| Built-in Methods | >200 pre-validated methods (incl. free ammonia, CO₂, SAC, color) |
| Software | photolab® Database & Color Library, AQA (Analytical Quality Assurance) tools, GLP-compliant audit trail |
| Interfaces | 1× USB-A, 1× USB-B, 1× Ethernet |
| Power Supply | Universal AC adapter (100–240 VAC) or 12 V DC automotive battery operation |
| Operating Temperature | +10 °C to +35 °C |
| Storage Temperature | −25 °C to +65 °C |
| Dimensions & Weight | 404 × 197 × 314 mm, approx. 4.5 kg |
| Origin | Imported |
|---|---|
| Type | Benchtop Laboratory Analyzer |
| Model | PhotoLab® S6, PhotoLab® S12, photoLab® 6000 Series |
| Measurement Principle | Rapid Digestion Photometry |
| Wavelength Range | 436 nm, 525 nm, 580 nm, 610 nm, 690 nm (S6) |
| Measurement Range | 0–1000 mg/L COD |
| Accuracy | ±5% of reading |
| Repeatability | ≤5% RSD |
| Detection Limit | 0.1 mg/L COD |
| Analysis Time | ≤30 min per batch |
| Batch Capacity | 15 samples |
| Cuvette Recognition | Automatic barcode-based identification for round and rectangular cuvettes (10 mm, 20 mm, 50 mm path lengths) |
| Compliance | Designed for ASTM D1252, ISO 6060, EN 1484, and US EPA Method 410.4 workflows |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3315 |
| Instrument Type | Portable Water Quality Analyzer |
| Measurement Principle | Optical (Luminescence-based) Method |
| Measured Parameters | Dissolved Oxygen (DO), pH, ORP, Conductivity, Turbidity |
| Display | Graphical LCD with backlight |
| Calibration | Saturation in air (steam-saturated air), optional external standard |
| Data Storage | 500 manual + 5,000 automatic entries |
| Data Export | CSV or ASCII via mini-USB |
| Power Supply | 4×1.5 V AA alkaline / 4×1.2 V NiMH rechargeable batteries / USB bus power |
| Pressure Compensation | Automatic barometric pressure compensation |
| Sensor Interface | Digital IDS (Intelligent Digital Sensor) interface |
| Compliance | GLP/AQA-compliant data logging with audit trail capability |
| Sensor | FDO 925 optical dissolved oxygen sensor |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | SensoLyt 700IQ |
| Part Number | 109170 |
| Sensor Type | Intelligent In-Line pH/ORP Electrode with Integrated Preamp & NTC Temperature Sensor |
| Output Signal | 4–20 mA / RS-485 (Modbus RTU) |
| Housing Material | PVDF or Titanium (depending on variant) |
| Pressure Rating | Up to 10 bar (SensoLyt SEA-HP), 6 bar standard |
| Operating Temperature | −5 to +60 °C (standard), up to +80 °C (SEA-HP) |
| IP Rating | IP68 |
| Compliance | EN 61326-1 (EMC), EN 61000-6-2/-6-4, ATEX/IECEx Zone 1 optional |
| Lightning Protection | Integrated transient voltage suppression circuit |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | SensoLyt PL |
| Type | Online Water Quality Analyzer |
| Measured Parameters | pH / ORP |
| Output | Digital (IQ protocol) |
| pH Range | 0–14 |
| ORP Range | ±2000 mV |
| Resolution | 0.01 pH / 1 mV |
| Temperature Compensation | Integrated NTC (−5 to +60 °C), optional Pt1000/Pt100 |
| Operating Temperature | 0 to +60 °C (standard), up to +130 °C (CHEMtrac variant) |
| Pressure Rating | 6–12 bar (model-dependent) |
| Enclosure Rating | IP68 |
| Electrode Body Material | Stainless Steel 316L / Titanium + POM (SW variants) |
| Accuracy | ±0.2 pH / ±20 mV |
| Power Consumption | 0.2 W |
| Electrolyte System | Gel/polymer-based, maintenance-free |
| Calibration Data Storage | On-sensor EEPROM (IQ-enabled models) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Distribution Status | Authorized Distributor |
| Import Status | Imported |
| Model | SENSORNET Online |
| Price Range | USD 25,000 – 125,000 |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | StirrOx-G |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| Measurement Range | 0–50 mg/L O₂ |
| Temperature Range | 0–50 °C |
| Electrode Material | Gold cathode |
| Body Material | Polyoxymethylene (POM) |
| Integrated Temperature Sensor | NTC thermistor |
| Stirring Mechanism | Built-in magnetic stirrer |
| Zero-point Calibration | Not required |
| Membrane Leak Detection | Integrated monitoring system |
| Application Type | Laboratory-grade DO measurement |
| Brand | WTW |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China-assembled under WTW/Xylem specifications) |
| Model | StirrOx® G |
| Instrument Type | Portable DO Sensor |
| Measurement Principle | Polarographic (Clark-type) Electrochemical Probe |
| Range | 0.00–90 mg/L O₂ |
| Accuracy | ±0.5% of reading |
| Repeatability | ≤±0.5% |
| Detection Limit | 0.01 mg/L |
| Response Time (t₉₀) | <60 s (in stirred water at 20 °C) |
| Operating Temperature | 0–40 °C |
| Membrane Material | PTFE |
| Electrolyte | KCl-based aqueous solution |
| Connector | WTW-standard 6-pin DIN |
| 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 | 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 | WTW |
|---|---|
| Origin | Germany |
| Model | TetraCon 700IQ |
| Electrode Configuration | Four-electrode (tetrapolar) |
| Measurement Principle | AC-driven four-pole conductivity measurement with automatic temperature compensation (ATC) |
| Conductivity Range | 0.01 µS/cm to 2 S/cm (typical, dependent on cell constant) |
| Temperature Range | 0–60 °C |
| Cell Constant | 0.475 cm⁻¹ (standard) |
| Output Signal | Analog 4–20 mA or digital Modbus RTU / SDI-12 (configurable) |
| Housing Material | PEEK + stainless steel 316L |
| IP Rating | IP68 |
| Compliance | EN ISO 7888, ASTM D1125, USP <645>, GLP-compliant data logging |
| 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 |
| Key | Origin: Imported |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Model | TresCon A |
| Instrument Type | Online Water Quality Analyzer |
| Measured Parameters | Ammonia-N (NH₄⁺-N), Total Phosphorus (TP), Total Nitrogen (TN) |
| Module Capacity | Up to 3 Independent Analytical Modules |
| Compliance | Designed for ISO/IEC 17025-aligned operation, supports GLP/GMP data integrity requirements via audit-trail-enabled software |
| Communication | RS-485, Modbus RTU, optional analog 4–20 mA outputs and Ethernet/IP integration |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TresCon (NH₄-N + TP) |
| Instrument Type | Online Analyzer |
| Measurement Principle | Ammonia Gas-Sensing Electrode (NH₄-N) |
| Measurement Range | NH₄-N: 0.1–1000 mg/L |
| TP | 0.01–3.00 mg/L (standard), up to 6.00 mg/L with external dilution module |
| Accuracy | NH₄-N: ±5% of reading ±0.2 mg/L (<1.0 mg/L) |
| TP | ±3% of reading ±0.05 mg/L |
| Detection Limit | NH₄-N: 0.1 mg/L |
| TP | 0.01 mg/L |
| Minimum Cycle Time | 3 min (per parameter, configurable) |
| Sample Throughput | Up to 2 independent sample streams (expandable via multi-channel inlet manifold) |
| Compliance | Designed for continuous operation in accordance with EN ISO 15839, ASTM D1426 (ammonia), and ISO 6878 (total phosphorus) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TresCon |
| Instrument Type | Online Analyzer |
| Measurement Principle | Gas-Sensing Electrode (NH₄⁺-N), Optical Absorption (NO₃⁻-N), Diazotization Colorimetry (NO₂⁻-N) |
| Measurement Range | NH₄⁺-N: 0.1–1000 mg/L |
| NO₃⁻-N | 0.1–60 mg/L |
| NO₂⁻-N | 0.005–1.200 mg/L |
| Detection Limit | NH₄⁺-N: 0.1 mg/L |
| NO₃⁻-N | 0.1 mg/L |
| NO₂⁻-N | 0.005 mg/L |
| Accuracy | NH₄⁺-N: ±5% of reading ±0.2 mg/L (<1.0 mg/L) |
| NO₃⁻-N | ±2% of reading ±0.4 mg/L |
| NO₂⁻-N | ±2% of reading ±0.05 mg/L |
| Cycle Time | Minimum 30 s per parameter |
| Batch Capacity | 3 independent measurement channels |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TresCon COD-3250 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Wavelength | 610 nm |
| Measurement Range | 20–1500 mg/L (extendable to 5000 mg/L) |
| Accuracy | ±10% of reading for ≥30 mg/L |
| Repeatability | ≤3% |
| Limit of Detection | 5 mg/L |
| Cycle Time | 35 minutes |
| Batch Capacity | 1 sample per cycle |
| 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 | WTW |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Instrument Type | Online Analyzer |
| Measurement Principle | Ammonia Gas-Sensing Electrode (NH₃-Selective Electrode) |
| Measurement Range | 0.05–1000 mg/L NH₄–N (dual-range: low range 0.05–10 mg/L, high range 0.1–1000 mg/L) |
| Accuracy | ±5% of reading |
| Detection Limit | 0.05 mg/L NH₄–N |
| Analysis Time | ≤3 minutes per sample |
| Sample Throughput | 3 samples per cycle |
| Compliance | Designed for continuous operation in EPA-compliant and ISO 5667-3 / ISO 15839 environmental monitoring applications |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TresCon UNO |
| Ammonia Nitrogen Range | 0.05–1000 mg/L NH₄–N |
| Nitrite Range | 0.05–1.200 mg/L NO₂–N |
| Orthophosphate Ranges | 0.05–3.00 mg/L PO₄–P (Range 1), 0.10–10.0 mg/L PO₄–P (Range 2), 0.10–25.0 mg/L PO₄–P (Range 3) |
| Calibration | Automatic 2-point calibration |
| Measurement Interval | Continuous, or programmable intervals from 5 min to 24 h |
| Sample Handling Options | PF105, PurCon, or PurCon IS pre-treatment modules |
| Power Supply | 230 VAC ±10%, 50 Hz / 115 VAC ±10%, 50/60 Hz |
| Operating Temperature | 0–40 °C |
| Dimensions (Analyzer) | 612 × 775 × 329 mm |
| Weight (Analyzer) | 35 kg |
| Reagent Tray Dimensions | 590 × 50 × 360 mm |
| Weight | 17 kg |