Environmental Monitoring Instruments
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| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-7810 |
| Measurement Principle | Optical Feedback–Cavity Enhanced Absorption Spectroscopy (OF-CEAS) |
| Gases Measured | CH₄, CO₂, H₂O |
| Detection Limits | Sub-ppb CH₄, <0.1 ppm CO₂, <0.01% RH H₂O |
| Power Requirement | 12–24 V DC (LI-7810) |
| Operating Temperature | –25 to 45 °C |
| Communication | Ethernet, Wi-Fi, Bluetooth (8200-01S), USB, RS-232 |
| Data Output | Real-time flux calculations (CH₄ & CO₂), soil temperature & moisture (via optional sensors), diagnostic logs |
| Compliance | Designed for GLP-compliant field deployment |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-7815 |
| Measurement Principle | Optical Feedback–Cavity Enhanced Absorption Spectroscopy (OF-CEAS) |
| Measurement Frequency | 1 Hz |
| Cavity Volume | 6.41 cm³ |
| Sample Flow Rate | 250 sccm (standard mL/min) |
| CO₂ Range | 0–10,000 µmol/mol |
| CO₂ Precision (1σ) | 0.04 µmol/mol @ 400 µmol/mol (5-s average), 0.10 µmol/mol @ 400 µmol/mol (1-s average) |
| CO₂ Drift | < 0.2 µmol/mol per 24 h |
| H₂O Range | 0–60,000 µmol/mol |
| H₂O Precision (1σ) | 20 µmol/mol @ 10,000 µmol/mol (5-s average), 45 µmol/mol @ 10,000 µmol/mol (1-s average) |
| Response Time (T₁₀–T₉₀) | ≤2 s for CO₂ (0 → 400 µmol/mol) |
| Operating Temperature | −25 °C to +45 °C (non-direct-sunlight ambient) |
| Operating Humidity | 0–85 % RH (non-condensing, ambient) |
| sample line | 0–99.9 % RH (non-condensing) |
| Pressure Range | 70–110 kPa (high-altitude mode: 50–110 kPa) |
| Power Consumption | 22 W @ 25 °C (steady state) |
| AC Input | 100–240 VAC, 50–60 Hz |
| Battery Runtime | ~8 h with two standard batteries |
| Weight | 10.5 kg (including battery) |
| Dimensions (L×H×W) | 51 × 33 × 18 cm |
| Connectivity | Ethernet and Wi-Fi (2.4 GHz, IEEE 802.11 a/b/g/n/ac) |
| Onboard Data Storage | Up to 3 months of 1-Hz data |
| Internal Web Server | Yes (accessible via browser over wired or wireless network) |
| Brand | LI-COR |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Import Status | Imported |
| Model | LI-7815 |
| Detection Principle | Optical Feedback–Cavity Enhanced Absorption Spectroscopy (OF-CEAS) |
| CO₂ Range | 0–10,000 μmol/mol |
| H₂O Range | 0–60,000 μmol/mol |
| CO₂ Precision | 0.04 μmol/mol (1σ, 5-s average @ 400 μmol/mol) |
| Max Drift | < 0.2 μmol/mol per 24 h |
| CO₂ Response Time (T₁₀–T₉₀) | ≤2 s (0 → 400 μmol/mol) |
| H₂O Precision | 20 μmol/mol (1σ, 5-s average @ 10,000 μmol/mol) |
| Measurement Frequency | 1 Hz |
| Optical Cavity Volume | 6.41 cm³ |
| Sample Flow Rate | 250 sccm (standard), 70 sccm with low-flow accessory |
| Operating Temperature | −25 °C to +45 °C (non-direct-sunlight conditions) |
| Operating Humidity | 0–85% RH (non-condensing, non-direct-sunlight) |
| Sample Line Humidity | 0–99.9% RH (non-condensing) |
| Pressure Range | 70–110 kPa (extended mode: 50–110 kPa) |
| Power Consumption | 22 W (steady-state @ 25 °C) |
| Weight | 10.5 kg (including internal batteries) |
| Dimensions (L×H×W) | 51 × 33 × 18 cm |
| Connectivity | Ethernet and Wi-Fi (2.4 GHz, IEEE 802.11 a/b/g/n/ac) |
| Data Storage | Internal memory supports ≥3 months of 1-Hz data |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-7820 |
| Measurement Principle | Off-axis Cavity-Enhanced Absorption Spectroscopy (OF-CEAS) |
| N₂O Range | 0–100 ppm |
| N₂O Precision (1σ) | 0.05 ppb @ 330 ppb (60-s avg) |
| N₂O Response Time (T₁₀–T₉₀) | ≤2 s |
| H₂O Range | 0–60,000 ppm |
| H₂O Precision (1σ) | 5 ppm @ 10,000 ppm (60-s avg) |
| Measurement Frequency | 1 Hz |
| Optical Cavity Volume | 6.41 cm³ |
| Sample Flow Rate | 250 sccm (standard) |
| Operating Temperature | –25 to 45 °C |
| Operating Humidity | 0–85% RH (non-condensing, no direct solar exposure) |
| Sampling Line Humidity Tolerance | 0–99.9% RH (non-condensing) |
| Pressure Range | 70–110 kPa (extended mode: 50–110 kPa) |
| Power Consumption | 22 W (steady-state, 25 °C) |
| Battery Runtime | ~8 h (dual battery configuration) |
| Weight | 10.5 kg (incl. batteries) |
| Dimensions | 51 × 33 × 18 cm (L×W×H) |
| Connectivity | Ethernet, Wi-Fi (2.4 GHz, 802.11 a/b/g/n/ac) |
| Compliance | Designed for field-deployable GLP-aligned workflows |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-8100A |
| Status | Discontinued (Replaced by LI-870 Portable Soil CO₂ Flux System) |
| Regulatory Compliance | ASTM D6573, ISO 16634-2, USDA-NRCS Soil Gas Flux Protocols |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-8150 |
| Dimensions (L×W×H) | 40.6 × 57.2 × 21.1 cm |
| Enclosure Rating | IP55 |
| Weight | 9.4 kg (8-channel), 11.2 kg (16-channel) |
| Operating Temperature | −20 to +45 °C |
| Relative Humidity Range | 0–95% RH (non-condensing) |
| Max. Radius from Multiplexer to Chamber | 15.0 m |
| Gas Flow Rate (to/from chamber) | 3.0 L/min |
| Inter-unit Flow (LI-8150 ↔ LI-8100A) | 2.0 L/min |
| Power Input | 10.5–14.5 V DC |
| Soil Temperature Sensor Accuracy | ±1.0 °C (−20 to +50 °C) |
| Power Delivery | Supplies regulated power to connected LI-8100A analyzer |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-8250 |
| Gas Analyzers Supported | LI-7810 (CH₄/CO₂/H₂O) or LI-870 (CO₂/H₂O) |
| Max Channels | 36 (via 8250-01 expansion modules) |
| Chamber Types | 8200-104 (opaque) or 8200-104C (transparent) |
| Data Storage | 8 GB internal |
| Operating Temperature | –20 to 45 °C |
| Humidity Range | 0–95% RH (non-condensing) |
| Enclosure Rating | IEC IP55 |
| Power Input | 10–30 VDC |
| Wi-Fi | 2.4 GHz, 802.11 a/b/g/n/ac |
| GPS Accuracy | 2.5 m CEP |
| Max Chamber Radius | 15.0 m (single line), 30.0 m (with 8250-01) |
| Pressure Sensor Range | 20–110 kPa (±0.4 kPa accuracy) |
| Flow Rate to Chambers | ~2–3 L/min |
| Software | SoilFluxPRO™ |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-8250 |
| Dimensions | 38.5 × 52 × 18.5 cm |
| Weight | 7.7 kg |
| Enclosure Rating | IP55 |
| Operating Temperature | –20 to 45 °C |
| Relative Humidity | 0–95% RH (non-condensing) |
| Data Storage | 8 GB internal |
| GPS Accuracy | 2.5 m CEP |
| Max Chamber Radius from LI-8250 | 15.0 m |
| Pump Flow Rate | ~2–3 L/min (diaphragm type) |
| Barometric Pressure Sensor Range | 20–110 kPa |
| Accuracy | ±0.4 kPa (50–110 kPa) |
| Resolution | 0.006 kPa |
| Power Input | 10–30 VDC |
| Typical Power Consumption (LI-8250) | 4.8 W (standby), 15.6 W (sampling/movement), 18.2 W (max) |
| Communication | 3× sealed RJ-45 Ethernet, Wi-Fi (2.4 GHz, 802.11 a/b/g/n/ac), USB-A (1× sealed for LI-870, 2× standard), RS-422 output (24 VDC, 115200 baud) |
| Chamber Compatibility | SDI-12 interface support for 8200-104 / 8200-104C long-term chambers (up to 8 units) |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-830 / LI-850 |
| CO₂ Range | 0–20,000 µmol/mol |
| CO₂ Accuracy | ±3% of reading (LI-830) |
| H₂O Range (LI-850 only) | 0–60 mmol/mol |
| H₂O Accuracy | ±1.5% of reading |
| Zero Drift (CO₂) | <0.15 µmol/mol/°C |
| Span Drift (CO₂) | <0.03%/°C |
| RMS Noise (CO₂) | <1 µmol/mol @ 370 µmol/mol (1-s avg) |
| H₂O Cross-Sensitivity (LI-850) | <0.1 µmol/mol CO₂ per mmol/mol H₂O |
| CO₂ Cross-Sensitivity (LI-850) | <0.0001 mmol/mol H₂O per µmol/mol CO₂ |
| Response Time (T90) | <3.5 s (CO₂ and H₂O) |
| Measurement Principle | Non-Dispersive Infrared (NDIR) |
| Pressure Compensation Range | 50–110 kPa |
| Output | Dual analog (0–2.5 V or 0–5 V |
| Power | 12–30 VDC |
| Operating Temp | –20 to +45 °C |
| Dimensions | 22.23 × 15.25 × 7.62 cm |
| Mass | 1.0 kg (base unit) |
| Brand | LI-COR |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Import Status | Imported |
| Model | LI-870 |
| Price Range | USD 52,000–65,000 |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-870 |
| CO₂ Range | 0–20,000 µmol/mol |
| H₂O Range | 0–60 mmol/mol |
| CO₂ & H₂O Accuracy | ±1.5% of reading |
| Measurement Frequency | 1 Hz |
| Dimensions (Analyzer) | 28.4 × 27.9 × 12.4 cm |
| Weight (Analyzer) | 2.31 kg |
| Operating Temperature | −20 to +45 °C |
| Relative Humidity | 0–95% RH (non-condensing) |
| Pressure Range | 50–110 kPa |
| Flow Rate | 0.75 L/min |
| Power Input | 10–17 VDC, max 2 A |
| Battery Life | Up to 20 h (with two batteries) |
| Measurement Principle | NDIR (Non-Dispersive Infrared) |
| Chamber | 8200-01S Smart Chamber (integrated GPS, Wi-Fi, SoilFluxPro™ software, pressure-balanced venting, bowl-shaped design, active air mixing) |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | Imported |
| Model | LI-G2003 Portable CH₄/H₂O Analyzer (PMA) |
| Price | Available Upon Request |
| Detection Principle | Cavity-Enhanced Absorption Spectroscopy (CEAS) |
| CH₄ Sensitivity | < 10 ppb (1σ, 1 s) |
| CH₄ Measurement Range | 0–1 % (10,000 ppm) |
| H₂O Measurement Capability | Yes |
| Form Factor | Handheld / Vehicle-Mountable / UAV-Compatible |
| Weight | 2.3 kg (5.0 lbs) |
| Power Supply | Internal Rechargeable Battery |
| Connectivity | Integrated GPS + Wi-Fi |
| Software | Open-Source, Customizable Firmware & Data Acquisition Suite |
| Calibration Stability | Extended Drift-Free Operation Without Frequent Recalibration |
| Compliance | Designed for Field Deployment in EPA Method 21–adjacent surveys, ASTM D6522-compliant ambient air monitoring, and GHG inventory verification per IPCC Tier 2/3 protocols |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model Series | LI-COR Radiation Sensor Series |
| Instrument Type | Pyranometer / PAR Quantum Sensor / Illuminance Sensor / Underwater PAR Sensor |
| Compliance | ISO 9070, ASTM E892, WMO Guide to Meteorological Instruments and Methods of Observation |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | SMARTFlux |
| Instrument Type | Eddy Covariance Flux Processing Module |
| Compatibility | LI-7500DS, LI-7200RS gas analyzers |
| Clock Synchronization | GPS + IEEE 1588 Precision Time Protocol (PTP) |
| Data Processing | Onboard EddyPro® software v8.2+ |
| Power Output | 24 VDC for 3D sonic anemometers |
| Interface | Digital SDI-12 & RS-485 support for sonic anemometers |
| Enclosure Rating | IP65-rated housing optional |
| Remote Monitoring | Integrated FluxSuite® web interface with email alerting |
| Brand | LICA |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model | LI-G2004 Ethylene Oxide Analyzer |
| Pricing | Available Upon Request |
| Measurement Principle | Cavity-Enhanced Absorption Spectroscopy (CEAS) |
| Detection Limit (C₂H₄O) | < 2 ppb (1σ, 1 sec) |
| H₂O Interference Limit | < 200 ppm (1σ, 1 sec) |
| Ethylene Oxide Range | 1 ppb – 1 ppm |
| Water Vapor Range | 500 – 30,000 ppm (non-condensing) |
| Data Output Rate | 1 Hz |
| Response Time | < 1 s (1/e) |
| Sample Flow Rate | 0.5 – 1 SLM |
| Operating Temperature | 0 – 45 °C |
| Operating Humidity | 0 – 98 %RH (non-condensing) |
| Inlet Fitting | ¼" Swagelok |
| Communication Interfaces | RS-232 serial, built-in Wi-Fi, Ethernet (RJ-45), USB-A, HDMI |
| Dimensions | 22" × 9" × 5.5" (56 cm × 23 cm × 14 cm) |
| Weight | 4 kg |
| Power Requirement | 14–36 VDC, 2.5 A |
| Power Consumption | < 30 W |
| Onboard Storage | 30 GB SSD |
| Calibration Method | Remote over Wi-Fi |
| Warranty | 12 months |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-A109 |
| Pricing | Upon Request |
| Digestion Method | Rapid Digestion |
| Heating Module | Single Aluminum Heating Block |
| Batch Capacity | 9 samples |
| Temperature Range | Ambient to 190 °C |
| Temperature Accuracy | ≤ ±2 °C |
| Sample Vial Capacity | 0–10 mL |
| Timer Drift | ≤ ±0.2 s per 60 min |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Laboratory BOD Analyzer |
| Model | LH-BOD1201 |
| Measurement Principle | Differential Pressure Method |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | 5 mg/L |
| Accuracy | ±10% |
| Incubation Duration | 5 days |
| Repeatability | ±3% |
| Sample Capacity | 12 independent channels |
| Display | Individual color LCD per test cap |
| Power Supply | Integrated rechargeable battery per sensor cap |
| Data Logging | Automatic time-stamped BOD₅ records with on-device history retrieval |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | LH-BOD306 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure-Difference Method |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | 0.1 mg/L |
| Accuracy | ±10% |
| Single-Sample Incubation Duration | 1–30 days (user-selectable) |
| Repeatability | ±5% |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-BOD606 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Manometric (Pressure-Difference) Method |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | 0.1 mg/L |
| Accuracy | ±0.1 mg/L for values <10 mg/L |
| Incubation Duration | Selectable from 1 to 30 days |
| Repeatability | ≤±10% RSD |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-BOD712 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Differential Method |
| Measurement Range | 0–4000 mg/L |
| Accuracy | ±10% |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | LH-E300 |
| Instrument Type | Benchtop & Portable Laboratory Water Quality Analyzer |
| Measured Parameters | pH, Dissolved Oxygen (DO), Electrical Conductivity (EC), Salinity, Total Dissolved Solids (TDS), Oxidation-Reduction Potential (ORP), Temperature, and Ion Concentrations (F⁻, Cl⁻, Br⁻, I⁻, Ca²⁺, K⁺, Na⁺, NO₃⁻, NH₄⁺) |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | LH-F108 |
| Digestion Method | Reflux Digestion |
| Heating Module | Single Aluminum Heating Block |
| Batch Capacity | 12 samples |
| Temperature Range | Ambient to 350 °C |
| Temperature Accuracy | ±0.5 °C |
| Timer Drift | ≤0.2 seconds per hour |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-F112 |
| Pricing | Upon Request |
| Digestion Method | Reflux Digestion |
| Heating Module | Single Aluminum Block Heater |
| Batch Capacity | 12 Samples |
| Temperature Range | Ambient to 350 °C |
| Temperature Accuracy | ±0.5 °C |
| Timer Drift | ≤0.2 s/hour |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | LH-P300 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | COD, Ammonia Nitrogen (NH₃-N), Total Phosphorus (TP), Total Nitrogen (TN), Turbidity, Color, Suspended Solids (SS), Heavy Metals, Organic & Inorganic Pollutants |
| Light Sources | 6 LED sources in visible spectrum (420–650 nm) |
| Wavelength Options | 16 mm and 25 mm cuvette compatibility |
| Power Supply | Rechargeable 3.7 V Li-ion battery |
| Battery Life | Up to 8 hours under typical field conditions |
| Data Storage | 40,000 measurement records |
| Connectivity | Bluetooth v5.0, USB-C interface |
| Calibration | Built-in 180 preloaded calibration curves |
| Compliance Standards | COD – HJ/T 399–2007, NH₃-N – HJ 535–2009 & HJ 536–2009, TP – GB 11893–1989 & GB/T 21931.3–2008 |
| Enclosure Material | High-strength ABS polymer |
| Weight | 0.6 kg |
| Display Interface | Analog-style dial UI with real-time color-coded threshold indication (red alert for out-of-range values) |
| Optional Accessories | Bluetooth thermal line printer, pre-filled reagent tubes, sealed digestion tubes, cooling rack, cuvette holder, adjustable-volume pipette, adapter set |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | DPD Spectrophotometry |
| Measurable Parameters | Free Chlorine, Total Residual Chlorine, Chlorine Dioxide |
| Range | Free Chlorine: 0–15 mg/L |
| Total Residual Chlorine | 0–15 mg/L |
| Chlorine Dioxide | 0–5 mg/L |
| Accuracy | ±10% |
| Repeatability | ≤±5% |
| Display | 3.5-inch color TFT screen with dial-style UI |
| Calibration | Built-in optical calibration & 15 preloaded calibration curves |
| Compliance | HJ 586–2010, GB/T 5750.11–2006 |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-P3COD |
| Instrument Type | Portable |
| Measurement Principle | Potassium Dichromate Digestion Method (Portable) |
| Wavelengths | 420 nm and 610 nm |
| Measurement Range | 0–15,000 mg/L COD |
| Accuracy | ≤ ±8% for values ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Batch Processing Capacity | 6 / 9 / 16 / 25 samples (user-selectable) |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-P3TN |
| Pricing | Available Upon Request |
| Measurement Method | Chromotropic Acid Method |
| Measurement Range | 0–150 mg/L |
| Accuracy | ≤ ±10% |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | LH-T305 |
| Pricing | Available upon Request |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | LH-T6VFA |
| Instrument Type | Benchtop VFA Analyzer for Laboratory Use |
| Measurement Principle | Esterification-Based Spectrophotometry |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | LH-P700 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | COD (HJ/T 399–2007), Ammonia Nitrogen (HJ 535–2009), Total Phosphorus (GB 11893–1989), Total Nitrogen, Turbidity, Color, Suspended Solids |
| Operating System | Proprietary LHOS (Android-based) |
| Optical System | 360° Rotating Cuvette Holder for φ16 mm and φ25 mm Tubes |
| Data Management | Cloud Upload (Lianhua Cloud), Local Database Integration, Audit-Trail Capable User Permissions |
| Field Imaging | Integrated Camera with Geotagged Photo Association to Measurement Records |
| Alerting | Configurable Threshold-Based Exceedance Warnings |