Water Quality Analysis
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| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | L-501 (Fluorescence Method) |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| Measurement Range | 0–99.00 mg/L |
| Accuracy | ±0.1 mg/L |
| Repeatability | ≤±0.05 mg/L |
| Detection Limit | 0.01 mg/L |
| Display | 7-inch Color Touchscreen |
| Parameters Displayed | DO Concentration (mg/L), Saturation (%), Temperature (°C/°F) |
| Temperature Compensation | Automatic & Manual |
| Electrode Status Monitoring | Intelligent Diagnostic Algorithm |
| Sensor Design | Solid-State Fluorescent Cap, No Electrolyte, No Polarization Required |
| Cap Replacement | Tool-Free, Quick-Swap Mechanism |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Model | L-503 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principles | pH (glass electrode), Conductivity (4-electrode AC conductivity), Dissolved Oxygen (fluorescence quenching), Temperature (Pt1000 RTD) |
| pH Range | 0.00–14.00 |
| pH Accuracy | ±0.01 pH |
| pH Repeatability | ≤±0.01 pH |
| Conductivity Range | 0.000 µS/cm–2000 mS/cm |
| Conductivity Accuracy | ±0.5% FS |
| Conductivity Detection Limit | 0.01 µS/cm |
| DO Range | 0.00–99.00 mg/L |
| DO Accuracy | ±0.2 mg/L |
| DO Repeatability | ≤±0.1 mg/L |
| DO Detection Limit | 0.01 mg/L |
| Temperature Range | –5.0 to 55.0 °C |
| Temperature Accuracy | ±0.2 °C |
| Display | 7-inch capacitive color touchscreen (1024×600) |
| IP Rating | IP54 |
| Data Storage | Internal memory for ≥2000 datasets with timestamp, operator ID, and audit trail metadata |
| Compliance | Supports GLP/GMP data integrity requirements including user-defined access levels, electronic signature readiness, and calibration history logging |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Model | L-701 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence-based Dissolved Oxygen (DO) Detection |
| DO Range | 0–99.00 mg/L |
| DO Accuracy | ±0.5% of reading (ion concentration), ±0.01 pH |
| Repeatability | ≤±0.2% |
| Detection Limit | 0.01 mg/L |
| pH/pX Range | –2.00 to 20.00 |
| pH Resolution | 0.01 pH |
| mV Range | –1999.9 to +1999.9 mV |
| mV Resolution | 0.1 mV |
| Temperature Compensation | Automatic & Manual |
| Display | 7-inch color TFT capacitive touchscreen |
| Operating System | Built-in bilingual (English/Chinese) firmware with adjustable brightness, time stamping, and °C/°F switching |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Model | M901 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching (DO), Potentiometric (pH) |
| DO Range | 0–99.00 mg/L |
| pH Accuracy | ±0.002 |
| mV Accuracy | ±0.1 mV |
| pH Repeatability | ≤±0.001 |
| mV Repeatability | ≤±0.1 mV |
| pH Range | −2.00 to 20.00 |
| pH Resolution | 0.001 |
| mV Resolution | 0.1 mV |
| Display | 7-inch color capacitive touchscreen |
| IP Rating | IP54 |
| Temperature Compensation | Automatic/manual with integrated high-stability temperature electrode |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Model | M902 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence-based Dissolved Oxygen (Note: *Correction required — device is a conductivity meter |
| Conductivity Range | 0.000 μS/cm to 2000 mS/cm |
| Accuracy | ±0.5% FS (Conductivity) |
| Repeatability | ≤ ±0.2% |
| Detection Limit | 0.01 μS/cm |
| Display | 7-inch color capacitive touchscreen |
| Temperature Compensation | Automatic/manual with integrated high-stability temperature electrode |
| IP Rating | IP54 |
| Data Compliance | GLP-compliant audit trail, calibration history logging, method recall, USB/printer/computer connectivity |
| Calibration | Multi-point (1–5 points), auto-standard recognition, calibration expiry alert |
| Sample Handling | Built-in magnetic stirrer, endpoint stability criteria configurable |
| Environmental Protection | Dust and splash resistant (IP54) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Model | M907 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| DO Range | 0–99.00 mg/L |
| DO Detection Limit | 0.01 mg/L |
| DO Accuracy | ±0.5% of reading (ion concentration) |
| Repeatability | ≤±0.2% |
| Display | 7-inch color capacitive touchscreen |
| pH/pX Range | −2.00 to 20.00 |
| pH/pX Resolution | 0.01 (default), selectable to 0.001 or 0.1 |
| mV Range | −1999.9 to +1999.9 mV |
| mV Resolution | 0.1 mV (selectable to 0.01 or 1) |
| Temperature Compensation | Automatic/manual with integrated high-stability temperature electrode |
| Data Management | GLP-compliant storage, audit trail, method recall, USB/printer/PC connectivity |
| Enclosure Rating | IP54 |
| Ion Modes | Direct concentration, standard addition, sample addition, Gran plot |
| Supported Ions | H⁺, Ag⁺, Na⁺, K⁺, NH₄⁺, Cl⁻, F⁻, and user-definable |
| Units | mg/L, g/L, mol/L, pX |
| Calibration Tracking | Auto-log with expiry alert |
| Stirring | Integrated magnetic stirrer |
| Endpoint Detection | Configurable stability criteria |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Regional Category | Domestic (China) |
| Model | MIS1000 |
| Price Range | USD 2,800 – 11,200 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameters | Dissolved Oxygen (DO), pH, Conductivity, TDS, Salinity, Resistivity, ORP, Temperature, plus optional photometric parameters including COD, NH₃-N, TP, TN, Turbidity, Cl₂, Cr⁶⁺, Fe, Cu, Pb, Cd, Ni, Mn, Zn, As, F⁻, CN⁻, SO₄²⁻, PO₄³⁻, NO₂⁻, NO₃⁻, Formaldehyde, Phenol, etc. |
| Optical System | Narrow-band Interference Filter + High-Precision Optical Filtering (380–800 nm) |
| Display | 7.0-inch Color Touchscreen or 5.6-inch Omron Keypad-integrated LCD |
| Data Storage | ≥5,000 measurement records + 200 built-in calibration curves |
| Power Supply | Dual-mode — Rechargeable Li-ion battery (3.7 V / 1800 mAh) + AC adapter (220 V ±10 %, 50 Hz) |
| Communication | USB 2.0, Bluetooth 4.0 |
| Enclosure Rating | IP54 |
| Dimensions | 160 × 190 × 70 mm |
| Weight | 0.88 kg (instrument only) |
| Operating Environment | 5–40 °C, ≤85 % RH (non-condensing) |
| Photometric Accuracy | ±8 % FS |
| Repeatability | ±5 % |
| Optical Stability | ≤0.001 A / 10 min |
| Light Source Lifetime | 100,000 h |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | MIT-1000 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | COD, Ammonia Nitrogen, Total Phosphorus, Total Nitrogen, Turbidity, Color, Suspended Solids, Hexavalent Chromium, Lead, Cadmium, Copper, Zinc, Iron, Nickel, Manganese, Arsenic, Aluminum, Cyanide, Nitrite, Nitrate, Sulfate, Phosphate, Chloride, Fluoride, Hardness, Residual Chlorine, Total Chlorine, Chlorine Dioxide, Formaldehyde (in air/water/textiles), Sulfide, Volatile Phenols |
| Detection Methodology | Multiple Standardized Spectrophotometric Methods (e.g., Dichromate Digestion for COD, Nessler’s Reagent for NH₃-N, Molybdate Blue for TP, etc.) |
| Display | Dual Touchscreen (7.6″ + 5.6″), Chinese UI |
| Power Supply | Dual-mode — Rechargeable Li-ion Battery (≥12 h runtime) + AC Adapter |
| Data Storage | ≥5000 test records, 200 user-defined calibration curves, built-in standard curves |
| Optical System | Cold LED Light Source with Narrow-band Interference Filters, Lifetime ≥100,000 h |
| Processor | ARM9 Core, 512 MB Internal Memory |
| Connectivity | Integrated Thermal Printer (timestamped reports with parameter labels) |
| Reagent Compatibility | Pre-filled Lab-YY Vial Kits (shelf-stable, no manual preparation required) |
| Compliance Support | Designed to align with ISO 7027 (turbidity), ISO 6060 (COD), ISO 7150-1 (NH₃-N), ISO 8242 (TP), EPA 365.4 (phosphorus), ASTM D1253 (residual chlorine), and relevant Chinese national standards (e.g., HJ/T 399–2007, HJ 535–2009, HJ 636–2012) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Model | YKM-BAD |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Method (Nesslerization or Salicylate-based) |
| Measurement Range | 0.02–30 mg/L NH₃-N |
| Accuracy | ≤ ±5% |
| Detection Limit | 0.02 mg/L |
| Measurement Time | 10–15 minutes |
| Batch Capacity | 20 samples |
| Optical Stability | ≤ 0.001 A/10 min |
| Light Source | Cold LED with Narrow-band Interference Filter, Lifetime ≥ 100,000 hours |
| Data Storage | 5,000 measurement records |
| Calibration Curves | 200 total (5 factory-default + 195 user-expandable) |
| Display | 4.3-inch TFT color touchscreen |
| Power Supply | Rechargeable Li-ion battery + USB-powered operation |
| Interface Language | English/Chinese switchable |
| Communication | USB data transfer |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Product Category | Domestic (China-made) |
| Model | YK-100 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | DPD Colorimetric Spectrophotometry |
| Measured Parameter | Free Residual Chlorine |
| Measurement Range | 0.01–3.00 mg/L |
| Accuracy | ≤5% |
| Repeatability | ≤±3% |
| Limit of Detection (LOD) | 0.05 mg/L |
| Display | 4.3″ TFT LCD (1024×600) |
| Optical System | Single-beam with Narrow-band Interference Filter |
| Light Source | Imported Long-life Cold LED (Germany-sourced) |
| Photodetector | Imported Photodiode |
| Optical Stability | ≤0.002 A/10 min |
| Data Storage | Internal Memory (2000 records) + USB Drive Support |
| Calibration Curves | 200 Preloaded Curves |
| Sample Cells | Cuvette (high-precision) and Test Tube (routine use) |
| Waste Disposal | Integrated Auto-drain System |
| Data Interfaces | RS-232C, USB Device, USB Host |
| Optional Wireless | Bluetooth Module (add-on) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic Instrument |
| Model | YK-806A |
| Price Range | USD 1,400–7,200 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure-Difference Method |
| BOD Range | 0–4000 mg/L |
| Accuracy | Compliant with Standard Glucose-Glutamic Acid Reference Solution Test (BOD₅ = 180–230 mg/L per ISO 5815-1:2019 & ASTM D5210-19) |
| Sample Capacity | 6 simultaneous vessels |
| Data Storage Duration | 10-year internal archival for BOD₅ results |
| Connectivity | Wireless data transmission (IEEE 802.11 b/g/n), optional thermal printer interface |
| Compliance | Designed to support GLP/GMP-aligned workflows and audit-ready data integrity requirements |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | YKC-D1 |
| Pricing | Available Upon Request |
| Measurement Method | Alkaline Potassium Persulfate Digestion + UV Spectrophotometry |
| Measurement Range | 0–80 mg/L |
| Accuracy | ≤8% RSD |
| Display | 5.6-inch Color Touchscreen GUI |
| Data Storage | ≥5,000 records (5 factory curves + 195 user-expandable calibration curves) |
| Light Source | Cold LED with Narrow-band Interference Filters (Lifespan: ≥100,000 hours) |
| Processor | ARM9 Core |
| Internal Memory | 512 MB |
| Connectivity | USB 2.0, RS-232 Serial Port |
| Printer | Integrated Thermal Printer |
| Custom Curve Support | Yes (Segmented K-coefficient adjustment) |
| Compatible Reagents | Lab-YY Pre-formulated Digestion & Detection Kits |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Region of Origin | Domestic (China) |
| Model | YKC-D1 |
| Pricing | Upon Request |
| Measurement Method | Alkaline Potassium Persulfate Digestion + UV Spectrophotometry (Standard Method per HJ 636-2012) |
| Measurement Range | 0.05–100 mg/L (multi-range auto-segmentation) |
| Accuracy | ≤ ±8% RSD at mid-range (10–50 mg/L), validated against certified reference materials (CRMs) |
| Display | 5.6-inch capacitive color touchscreen (800 × 480 resolution) |
| Data Storage | ≥5,000 measurement records with timestamp, sample ID, operator ID, and calibration metadata |
| Preloaded Curves | 5 factory-calibrated curves + 195 user-expandable curves |
| Light Source | Cold LED with narrow-band interference filters (center wavelength: 220 nm & 275 nm |
| bandwidth | <5 nm FWHM) |
| Processor | ARM9 core @ 400 MHz with 512 MB NAND flash + 128 MB DDR2 RAM |
| Connectivity | USB 2.0 host/device port, RS-232 serial interface (DB9) |
| Integrated Thermal Printer | 58 mm width, auto-cutter, supports real-time and batch printout of raw absorbance, concentration, curve ID, digestion time, and QC flags |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | YKG-B1 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Colorimetric Method (Standardized Spectrophotometric Absorption) |
| Measurement Range (Ammonia Nitrogen) | 0.01–100 mg/L |
| Accuracy | ≤5% RSD |
| Detection Limit | 0.01 mg/L (NH₃-N) |
| Measurement Time | 10–20 min per batch |
| Batch Capacity | 20 samples |
| Optical Stability | ≤0.001 A/10 min |
| Light Source | Long-life Imported Tungsten Halogen Lamp |
| Cuvette Compatibility | Standard 10-mm Pathlength Glass or Plastic Cuvettes (GB/T 5750 & HJ 535–2009 Compliant) |
| Data Storage | ≥5000 Records (with Timestamp, Parameter ID, Calibration Curve ID) |
| Preloaded Curves | 200 (5 Factory-default + 195 User-expandable) |
| Interface | 4.3″ TFT Color LCD (Chinese/English Switchable), USB Device/Host, RS-232C, Bluetooth (Optional) |
| Internal Memory | 512 MB NAND Flash |
| Repeatability | ≤±5% RSD |
| Chloride Interference Tolerance | ≤1000 mg/L Cl⁻ (NH₃-N & TP) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer | Yoke Instrument Co., Ltd. |
| Model | YKG-C1 |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measurable Parameters | COD / Ammonia Nitrogen / Total Phosphorus (select one per operation) |
| Detection Range (COD) | High Range 15–8000 mg/L, Low Range 5–160 mg/L |
| Detection Range (Ammonia Nitrogen) | 0.01–100 mg/L |
| Detection Range (Total Phosphorus) | 0.002–20 mg/L |
| Chloride Interference Tolerance | [Cl⁻] < 1000 mg/L (no interference) |
| optional high-tolerance module | [Cl⁻] < 8000 mg/L |
| Accuracy | ≤5% |
| Repeatability | ≤±5% |
| Measurement Time | 10–20 min per sample |
| Optical Stability | ≤0.001 A/10 min |
| Light Source | Imported tungsten halogen lamp |
| Photometric Method | Fixed-wavelength spectrophotometry using standardized cuvette-based colorimetry |
| Wavelength Filtering | Precision interference filter system |
| Data Storage Capacity | ≥5000 measurement records (date, time, parameter ID, result, curve ID) |
| Calibration Curves | 200 programmable curves (5 factory-default + 195 user-expandable), including segmented calibration support with concentration-dependent slope coefficients (K) |
| Display | 4.3-inch TFT color touchscreen |
| Interface Options | USB Device (PC connection), USB Host (U-disk import/export), RS-232C (printer interface), Bluetooth (optional) |
| Operating System Language | Switchable Chinese/English UI |
| Batch Processing | Up to 20 samples per session |
| Memory | 512 MB internal NAND flash |
| Processor | ARM9 embedded microcontroller |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Category | Laboratory-Based |
| Model | YKM-AN |
| Measurement Principle | Colorimetric Method (Nesslerization or Salicylate-based, compliant with ISO 7150-1 & HJ 535–2009) |
| Measurement Range | 0.01–100 mg/L NH₃–N |
| Accuracy | ≤ ±5% FS |
| Detection Limit | 0.01 mg/L |
| Measurement Time | 10–15 min per batch |
| Batch Capacity | 20 samples |
| Optical Stability | ≤ 0.001 A/10 min |
| Light Source | Cold LED with Narrow-Band Interference Filter (Lifespan ≥ 100,000 h) |
| Cuvette Compatibility | Standard 10-mm and 30-mm square cuvettes (ISO 3696 Grade 3 water compatible) |
| Data Storage | ≥ 5,000 measurement records (timestamped: date, time, sample ID, calibration curve ID, result) |
| Calibration Curves | 200 total (5 factory-loaded, 195 user-expandable |
| Display | 4.3-inch TFT color touchscreen (800 × 480 resolution) |
| Interface Options | USB Device (PC data export), USB Host (U-disk import/export), RS-232C (printer support), Bluetooth 4.2 (optional module) |
| Language Support | English & Chinese UI toggle |
| Internal Memory | 512 MB NAND flash |
| Operating System | Embedded Linux (ARM9 core processor) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | YKM-BC |
| Instrument Type | Portable |
| Measurement Principle | Rapid Digestion Method (Laboratory-grade) |
| Measurement Range | 0.1–160 mg/L and 20–5000 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ ±5% |
| Detection Limit | 0.1 mg/L |
| Measurement Time | 10–20 minutes |
| Batch Capacity | 20 samples |
| Display | 4.3-inch color TFT touchscreen |
| Data Storage | 5000 measurement records |
| Calibration Curves | 200 preloaded & user-definable curves (5 factory-default + 195 expandable) |
| Optical System | Cold LED light source with narrow-band interference filters |
| Photometric Stability | ≤ 0.001 A/10 min |
| Power Management | Rechargeable lithium battery with real-time SOC display and dual-mode USB charging (PC or vehicle) |
| Communication | USB interface |
| Sample Vessel Compatibility | Cuvette and test tube |
| Language Interface | Switchable Chinese/English |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | YKM-C |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometric Method (ISO 15705-compliant digestion protocol) |
| Measurement Range | 5–160 mg/L (Low Range) or 15–8000 mg/L (High Range) |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ ±5% |
| Detection Limit | 5 mg/L |
| Analysis Time | 20 min per batch |
| Batch Capacity | 20 samples |
| Chloride Interference Tolerance | [Cl⁻] < 1000 mg/L (standard) |
| Optical Stability | ≤ 0.001 A/10 min |
| Light Source | Cold LED with narrow-band interference filters (lifetime ≥ 100,000 h) |
| Data Storage | ≥ 5000 measurement records + 200 calibration curves (5 factory-default + 195 user-expandable) |
| Display | 4.3″ TFT color touchscreen (dual-language UI: English/Chinese) |
| Connectivity | USB Device (PC transfer), USB Host (U-disk import/export), RS-232C (printer interface), Bluetooth 5.0 (optional) |
| Internal Memory | 512 MB NAND flash (ARM9 core processor) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | YKM-N1 |
| Price Range | USD 4,200 – 7,000 (FOB Shanghai) |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measured Parameters (select one per operation) | Ammonia-Nitrogen (NH₃-N), Chemical Oxygen Demand (COD), Total Phosphorus (TP), Total Nitrogen (TN) |
| Display | 7-inch 1024×600 color TFT-LCD |
| Optical System | Single-beam CT ratio dual-beam photometry |
| Wavelength Range | 190–1100 nm (with automatic D₂ & W lamp switching) |
| Detection Range (typical) | COD (High: 15–5000 mg/L |
| Low | 5–160 mg/L), NH₃-N (0.01–100 mg/L), TP (0.002–20 mg/L), TN (0.01–80 mg/L) |
| Chloride Interference Tolerance | ≤1000 mg/L Cl⁻ (no interference) |
| Accuracy | ≤±5% of reading |
| Repeatability | ≤±2% RSD |
| Photometric Stability | ±0.001 A/10 min |
| Measurement Time | 10–20 min per sample |
| Calibration Curve Storage | 500 user-definable curves (including segmented, single-point, and custom-built) |
| Data Storage Capacity | 5 million measurement records |
| Interface Options | RS-232C (for thermal/impact printer), USB Device (PC connectivity), USB Host (U-disk support), Bluetooth 5.0 (optional) |
| Light Sources | Socket-type imported deuterium and tungsten halogen lamps with usage-time logging |
| Cuvette Holder | Standard 4-position cuvette carousel (compatible with 10 mm, 20 mm, 30 mm, and 50 mm pathlength cells) |
| Data Export Formats | .CSV, .TXT, .JPG/.PNG (spectral plots and calibration graphs) |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | YKM-T1 |
| Price Range | USD 4,200 – 7,000 (FOB Shanghai) |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measured Parameters (select one per assay) | Ammonia-Nitrogen (NH₃-N), Chemical Oxygen Demand (COD), Total Phosphorus (TP), Total Nitrogen (TN) |
| Display | 7-inch TFT LCD (1024 × 600) |
| Optical System | Single-beam CT-type dual-optical-path ratio system |
| Detection Method | UV-Vis spectrophotometry (220–900 nm) |
| Wavelength Accuracy | ±1 nm |
| Photometric Accuracy | ±0.001 A (at 0.5 A, 546 nm) |
| Stray Light | <0.05% T at 220 nm |
| Detection Range (typical) | COD (High: 15–5000 mg/L |
| Low | 5–160 mg/L), NH₃-N (0.01–100 mg/L), TP (0.01–80 mg/L), TN (0.002–20 mg/L) |
| Chloride Interference Tolerance | ≤1000 mg/L Cl⁻ (standard) |
| Photometric Precision | ≤±2% RSD (n=6, mid-range standard) |
| Absorbance Stability | ±0.001 A / 10 min |
| Measurement Time | 10–20 min per sample (including reagent reaction and optical readout) |
| Data Storage | 5 million test records + 500 user-defined calibration curves (linear, segmented, single-point) |
| Connectivity | RS-232C (for thermal/impact printers), USB Device (PC link), USB Host (U-disk support), Bluetooth 5.0 (optional) |
| Storage Media | Internal 16 GB eMMC + external U-disk (FAT32/exFAT) |
| File Export Formats | .csv, .qua, .txt, .bmp |
| Power Supply | AC 100–240 V, 50/60 Hz |
| Dimensions | 350 × 280 × 180 mm |
| Weight | 5.2 kg |
| Brand | Youyunpu |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Model | YP-S60 |
| Price | USD 1,200 (FOB Qingdao) |
| Measurement Principle | Spectrophotometry (Visible Light Absorption, 420–680 nm) |
| Measurable Parameters | pH, Dissolved Oxygen (DO), Ammonia-Nitrogen (NH₃-N), Nitrite (NO₂⁻), Hydrogen Sulfide (H₂S), Total Alkalinity, Phosphate (PO₄³⁻), Total Hardness, Free Chlorine, Temperature, Salinity |
| Resolution | 0.001 unit (pH, DO, Cl₂, etc.) |
| Optical Source | Imported Cold LED Light Source (Lifetime ≥ 100,000 h) |
| Power Supply | Rechargeable Li-ion Battery (DC 7.4 V, 4400 mAh) + AC Adapter (100–240 V, 50/60 Hz) |
| Operating Environment | 0–50 °C, RH ≤ 90% non-condensing |
| Compliance | ISO 7027 (turbidity reference), ASTM D1293 (pH), ASTM D888 (DO), EPA 365.3 (phosphate), EPA 350.1 (ammonia), USP <643> (conductivity-related calibration traceability) |
| Brand | Youyunpu |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | YP-SY |
| Measurement Range | 0–500 µg/L |
| Resolution | 0.01 µg/L |
| Accuracy | ±5% of Rhodamine WT signal equivalent at 1 ppb |
| Linearity | R² > 0.999 |
| Sensor Material | SUS316L stainless steel |
| Host Material | ABS+PC blend |
| Host IP Rating | IP67 |
| Sensor IP Rating | IP68 |
| Operating Temperature | 0–50 °C (non-freezing) |
| Storage Temperature | −15–60 °C |
| Sensor Dimensions | Ø24 mm × 207 mm |
| Sensor Weight | <0.25 kg |
| Host Dimensions | 203 × 100 × 43 mm |
| Host Weight | 0.5 kg |
| Standard Cable Length | 3 m (extendable) |
| Display | 3.5-inch color LCD with adjustable backlight |
| Data Storage | 8 GB internal flash memory |
| Power | Rechargeable Li-ion battery, USB-C charging |
| Connectivity | Automatic sensor recognition and interface adaptation |
| Calibration & Configuration | On-device sensor parameter setup and two-point calibration support |
| Brand | Youyunpu |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YP-SZA |
| Instrument Category | Automatic Water Sampler |
| Sampling Method | Flow-Proportional & Time-Proportional Sampling |
| Instrument Form Factor | Portable Water Sampler |
| Sampling Interval | 1–9999 min |
| Number of Sample Bottles | 12 |
| Sample Volume per Bottle | 10–1000 mL |
| Bottle Capacity | 1000 mL |
| Sampling Accuracy | ±10% (at 200 mL) |
| Flow-Proportional Accuracy | ±10% |
| Pump Suction Lift | ≥8 m |
| Horizontal Sampling Distance | ≥60 m |
| Sample Refrigeration Temperature | 0–4 °C (±1.5 °C) |
| System Air-Tightness | ≤−0.07 MPa |
| MTBF | ≥1440 h |
| Insulation Resistance | >20 MΩ |
| Analog Input | 4–20 mA |
| Digital Inputs | Switch Signal, RS485 |
| Power Supply | AC 220 V ±10%, 50 Hz ±1 Hz |
| Operating Temperature | 10–40 °C |
| Operating Humidity | ≤85% RH |
| Weight | 20 kg |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | YSI 30 / YSI 30M |
| Price | Upon Request |
| Conductivity Range | 0–499.9 µS/cm (0.1 µS/cm res., ±0.5% FS), 0–4999 µS/cm (1.0 µS/cm res., ±0.5% FS), 0–49.99 mS/cm (0.01 mS/cm res., ±0.5% FS), 0–200.0 mS/cm (0.1 mS/cm res., ±0.5% FS) |
| Salinity Range | 0–80 ppt (0.1 ppt res., ±2% or ±0.1 ppt) |
| Temperature Range | −5 to +95 °C (0.1 °C res., ±0.1 °C ±1 LSD) |
| Cell Constant | 5.0 cm⁻¹ ±4% |
| Reference Temperature | Adjustable between 15–25 °C |
| Temp. Compensation Coefficient | 0–4% (adjustable) |
| IP Rating | >IP65 |
| Power | 9 V DC (six AA alkaline batteries, ~100 h typical life) |
| Dimensions | 24.1 × 8.9 × 5.6 cm |
| Weight | 0.77 kg |
| Data Storage | 50 readings (YSI 30M only, non-volatile memory) |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | YSI 3100 |
| Price | Upon Request |
| Conductivity Range | 0–49.99 µS/cm (0.01 µS/cm res., ±0.50%), 0–499.9 µS/cm (0.1 µS/cm res., ±0.50%), 0–4999 µS/cm (1 µS/cm res., ±0.50%), 0–49.99 mS/cm (0.01 mS/cm res., ±0.50%), 0–499.9 mS/cm (0.01 mS/cm res., ±0.50%) |
| Salinity Range | 0–80 ppt (0.1 ppt res., ±0.1 ppt or 2%) |
| Temperature Range | −5 to +95 °C (0.1 °C res., ±0.1 °C + 1 LSD) |
| Temperature Compensation | Linear, adjustable reference temp. 15–25 °C, coefficient 0–4 %/°C |
| Cell Constants | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Calibration | Single-point |
| Display | LCD |
| Connector | 7-pin mini-DIN |
| Platinum Plating Function | Yes |
| Power Supply | 220 V AC |
| Certifications | UL, CSA, CE |
| Operating Humidity | Up to 95% RH (non-condensing) |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | YSI 3200 |
| Pricing | Upon Request |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | YSI 5750 Probe Compatible |
| Instrument Type | Benchtop (Not Portable) |
| Measurement Principle | Galvanic Electrochemical Sensor |
| DO Range | 0.00–60.00 mg/L (ppm) |
| Saturation Range | 0.0–600.0% |
| Temperature Range | –5.0 to +50.0 °C |
| DO Accuracy | ±0.1% FS + 0.01 mg/L |
| Saturation Accuracy | ±0.1% FS + 0.1% |
| Temperature Accuracy | ±0.1 °C |
| DO Resolution | 0.01 mg/L |
| Saturation Resolution | 0.1% |
| Temperature Resolution | 0.1 °C |
| Repeatability | ≤0.05% RSD |
| Detection Limit | 0.00 mg/L (with ±2 µg/L baseline stability) |
| Data Storage | 100 readings with timestamp (date/time stamping via internal real-time clock) |
| Membrane | Pre-tensioned 5906-type gas-permeable membrane |
| Zero Drift | Negligible (<0.002 mg/L/24 h) |
| Membrane Integrity Monitoring | Real-time diagnostic alert upon membrane breach |
| Stirring | Integrated motor-driven stirring for 5010 probe |
| Compliance | ASTM D888, ISO 5814, US EPA Method 4500-O G, GB 11913–1989 (Chinese Standard for Electrochemical DO), HJ/T 99–2003 (BOD dilution method), GB 7488–1987 (BOD₅ standard) |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | YSI 5000 |
| Pricing | Upon Request |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 5000 |
| Compliance | HJ/T 99–2003, GB 7488–1987, GB 11913–1989 |
| Probe Type | Self-stirring electrochemical DO/BOD sensor (YSI 5906 membrane cap) |
| Data Storage | 100 timestamped readings |
| Software | Optional YSI BOD Analysis Software with automated calculation, report generation, and audit-ready export |
| Stirring | Integrated constant-speed magnetic stirrer |
| Membrane | Pre-tensioned 5906 polarographic membrane cap |
| Zero Drift | None – factory-calibrated, no user zero adjustment required |
| Alarm Functions | Supersaturation warning, temperature out-of-range alert, membrane integrity failure detection |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI 5000 Series |
| Measurement Range | 0–60 mg/L DO / 0–600% air saturation |
| Temperature Range | –5 to +50 °C |
| Resolution | 0.01 mg/L / 0.1% air saturation / 0.1 °C |
| Accuracy | ±0.1% of reading + 1 LSD (DO and % saturation) / ±0.1 °C (temperature) |
| Salinity Compensation | up to 40 ppt |
| Data Storage | 100 timestamped readings with real-time clock |
| Interface | RS-232 |
| Power | 4 × D-cell alkaline batteries or 220 V AC adapter |
| Probe Power | Instrument-supplied (no external power required for YSI 5010/5015 probes) |
| Software Compatibility | YSI BOD Analysis Software (v5.1+), EPA Method 503-compliant OUR/SOUR calculation module (YSI 5100 only) |
| Built-in Barometer | Yes (YSI 5100 only) |
| Auto-Calibration | Yes (YSI 5100 only) |
| Barcode Scanner Support | Yes (YSI 5100 only) |