Water Quality Analysis
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| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | TP-585 |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Online Analyzer |
| Measurement Range | 0–50 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤±10% |
| Minimum Measurement Cycle | 40 min (adjustable from 5–120 min) |
| Digestion Time | Configurable |
| Sampling Interval | 20–9999 min (programmable) or on-the-hour mode |
| Calibration Interval | 1–99 days (user-defined) |
| Maintenance Interval | ~30 min per month |
| Analog Output | 1 × 4–20 mA (optional 2 channels) |
| Communication Interface | RS232 or RS485 |
| Digital I/O | 1–6 relay outputs (220 VAC / 2 A) |
| Operating Environment | +5 to +28 °C, ≤99% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz ±1%, 5 A |
| Dimensions | 1430 × 500 × 403 mm |
| MTBF | ≥720 h |
| Data Retention | Non-volatile memory preserves settings and logs during power loss |
| Display & Control | Integrated touch screen interface |
| Self-Diagnostic Capability | Real-time fault detection with alarm prompts |
| Auto-Cleaning | Integrated sampling line cleaning function |
| Valve System | Multi-port corrosion-resistant valve assembly |
| Tubing | Imported modified PTFE transparent tubing (ID >1.5 mm) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | ZDY-502 |
| Instrument Type | Benchtop Karl Fischer Coulometric & Volumetric Moisture Titrator |
| Measurement Principle | Coulometric and Volumetric Karl Fischer Titration |
| Measurable Parameters | Water Content |
| Measurement Range | 0.1 mg – 250 mg H₂O |
| Repeatability | ±0.5% RSD |
| Data Storage Capacity | 200 measurement records |
| Compliance | GLP-compliant data handling |
| Interface | USB + RS232 |
| Software Support | Dedicated PC control software with audit trail capability |
| Safety Features | Anti-spill titration cup, reagent containment system, anti-siphon waste bottle, automated reagent mixing and rinsing |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (PRC) |
| Model | ZDY-504 |
| Pricing | Available Upon Request |
| Instrument Type | Portable Karl Fischer Coulometric & Volumetric Titrator |
| Measurement Range | 0.1 – 250.0 mg H₂O |
| Repeatability | ≤0.5% RSD |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Accuracy/Precision | ±10% |
| Optical Resolution | 0.001 Absorbance Unit (Abs) |
| Compliance | Designed for ASTM D3559, ISO 8466-1, and EPA Method 200.7–compatible workflows |
| 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 |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-3C(V8) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion–Spectrophotometric Method (HJ/T 399–2007 compliant) |
| Wavelength | 610 ± 20 nm |
| COD Range | High-range: 20–10,000 mg/L (segmented) |
| Accuracy | ≤ ±8% for COD ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 minutes per batch |
| Sample Throughput | 16 samples per run |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | 5B-6C |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measurable Parameters | COD, Ammonia Nitrogen (NH₃-N), Total Phosphorus (TP) |
| Optical Source | Long-life Cold Light Source with Narrow-band Interference Filter |
| Temperature Control Range | 45–190 °C |
| Timer Range | 1–600 min |
| Calibration Curves Stored | 48 pre-programmed & user-defined curves |
| Data Storage Capacity | 1,000 measurement records |
| Display | Backlit LCD with Chinese UI and bilingual key labeling |
| Cuvette Compatibility | Supports both 10-mm square cuvettes and 16-mm round test tubes |
| Output | Integrated thermal printer for real-time and historical data export |
| Auto-Curve Generation | Capable of automatic calibration curve derivation from standard solutions |
| Interface | Dual-font display mode (large/small), programmable alarm prompts for temperature stabilization and countdown completion |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-6D(V10) |
| Instrument Type | Laboratory Analyzer |
| Measurement Principle | Colorimetry (Nessler and Salicylate Methods) |
| Measurement Range | 0–160 mg/L NH₃-N |
| Accuracy | ≤ ±5% |
| Measurement Time | 10–40 minutes |
| Batch Processing Capacity | Configurable (via optional cuvette racks or tube holders) |
| Display | 5.6-inch color touchscreen |
| Data Storage | Up to 12,000 measurement records |
| Data Export | USB port and infrared interface |
| Output | Built-in thermal printer |
| Calibration | Auto-curve generation and storage using standard solutions |
| Curve Customization | User-defined calibration curve fitting supported |
| Reagent Compatibility | Pre-packaged Nessler reagents |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-6P(V10) |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Spectrophotometry (Molybdenum Blue Method) |
| Measurement Range | 0–100 mg/L as P |
| Accuracy | ≤ ±5% of reading |
| Display | 5.6-inch color touchscreen interface |
| Data Storage Capacity | 12,000 measurement records |
| Data Output | USB port, infrared wireless transfer, built-in thermal printer |
| Calibration | Automated standard curve generation and storage using user-provided reference standards |
| Curve Fitting | User-definable polynomial or linear calibration curve fitting |
| Sample Formats | Cuvette-based (10 mm pathlength) and tube-based (16 mm diameter) measurement modes |
| Reagent Compatibility | Pre-formulated high-range and low-range total phosphorus reagent kits (acid digestion + molybdate-ascorbic acid color development) |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | LH-P3VFA |
| Instrument Type | Portable VFA Analyzer |
| Measurement Principle | Esterification-based Spectrophotometry |
| Analysis Time | ≤20 min per sample |
| Display Units | mg/L or mmol/L (auto-switchable) |
| Power Supply | Built-in rechargeable Li-ion battery (8 h field operation) |
| Interface | USB Type-C (data transfer & charging) |
| Optical System | Calibratable light source with enhanced stability and longevity |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-T3COD |
| Pricing | Upon Request |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Method (HJ/T 399–2007) |
| Measurement Range | 20–10000 mg/L (multi-range, segmented) |
| Accuracy | ≤8% |
| Repeatability | ≤3% |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-T3TP |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Spectrophotometry (Molybdenum Blue Method per GB 11893–1989) |
| Measurement Range | 0–12 mg/L (multi-segment calibration) |
| Accuracy | ±8% FS (Full Scale) |
| Display | 3.5-inch TFT color LCD with analog-style UI |
| Light Source | Cold LED with narrow-band interference filter (rated lifetime ≥100,000 hours) |
| Sample Holders | Compatible with φ16 mm round cuvettes and 30 mm square cuvettes |
| Calibration Options | 15 pre-programmed calibration curves across 3 operating modes |
| Data Storage | 5,000 measurement records with timestamp and result value |
| Included Accessory | LH-A109 9-position digital digestion block (pre-configured for phosphorus digestion per standard protocols) |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-BODK81 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Microbial Electrode Method |
| BOD Range | 2–50 mg/L (samples >50 mg/L require dilution) |
| Single-Sample Analysis Time | 8 minutes |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | LH-CM3H(V11) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Measurement Range | 0.3–20 mg/L (multi-range segmented) |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| Limit of Detection (LOD) | 0.08 mg/L |
| Analysis Time per Batch | 50 minutes |
| Sample Throughput | 16 samples per run |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-P3TP |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Portable |
| Measurement Principle | Spectrophotometry (Molybdenum Blue Method) |
| Measurement Range | 0–100 mg/L as P |
| Accuracy | ≤ ±8% |
| Display | 3.5-inch color TFT LCD with dial-style UI |
| Built-in Calibration Curves | 20 pre-programmed curves with user calibration capability |
| Optical Calibration Support | Yes, for LED intensity stabilization |
| Over-range Indication | Visual red alert on dial interface |
| Reagent Compatibility | Pre-formulated liquid reagent kits supplied by Lianhua Technology |
| Compliance | Designed to meet standard requirements of HJ 670–2013 (Chinese EPA method for total phosphorus in water), compatible with ISO 6878:2004 and ASTM D515-89 (revised) |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | LH-P3NHN |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Method (Nesslerization) |
| Measurement Range | 0–200 mg/L NH₃–N (multi-range segmented) |
| Accuracy | ≤ ±10% of reading |
| Compliance Standards | HJ 536–2009, HJ 1535–2009 |
| Display | 3.5-inch color TFT LCD with dial-style UI |
| Calibration | Optical intensity calibration & curve-based calibration |
| Built-in Calibration Curves | 30 preloaded, user-editable and user-calibratable |
| Reagent Compatibility | Pre-formulated reagent kits (LH-series) included |
| Over-range Indication | Visual red alert on dial interface when exceeding upper limit |