pH Meter
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| Brand | METTLER TOLEDO |
|---|---|
| Origin | Shanghai, China |
| Model Variants | S400 / S470 / S700 / S600 / S900 |
| Measurement Range | pH: –2.000 to 20.000 |
| mV | –2000 to +2000 |
| Resolution | pH: 0.001 |
| mV | 0.1 |
| Accuracy | ±0.002 pH (model-dependent) |
| Calibration Standards | NIST-traceable US standard buffer solutions |
| Module Configuration | Up to three interchangeable measurement modules (pH, conductivity, ion concentration, redox, dissolved oxygen) |
| Compliance | Designed for GLP/GMP environments |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | SevenGo Duo |
| IP Rating | IP67 |
| Compliance | GLP-compliant data management |
| Communication | Infrared (IR) interface |
| Channel Configuration | Dual-channel simultaneous measurement |
| Measurement Modes | pH/mV/Ion Concentration, Conductivity/TDS/Salinity/Resistivity, Dissolved Oxygen (DO) |
| Display Language Support | Multilingual (including full Chinese UI) |
| Electrode Technology | ISM® Intelligent Sensor Management |
| Regulatory Alignment | Designed for ISO/IEC 17025 and FDA 21 CFR Part 11–ready environments (audit trail & user authentication enabled via optional software) |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Instrument Type | Portable |
| Measurement Parameters | pH, mV, Ion Concentration, Conductivity, TDS, Resistivity, Salinity, Dissolved Oxygen (DO), Temperature |
| pH Range | 0–14 |
| pH Resolution | 0.1 |
| pH Accuracy | ±0.1 |
| DO Measurement Principle | Polarographic (SG23/SG68/SG78) or Optical (SG6/SG7/SG8/SG9/SG98) |
| Temperature Compensation | Linear & Non-linear for Conductivity |
| Calibration Standards | NIST-type (China version) / USA-type (International version) |
| Ingress Protection | IP67 |
| Data Storage Capacity | Up to 500 GLP-compliant records |
| Interface | Infrared (IR) |
| Power Supply | 4× AA alkaline or NiMH rechargeable batteries |
| Electrode Technology | Intelligent Sensor Management (ISM) enabled |
| Operating Modes | Standard & Expert |
| Display | Backlit LCD |
| Compliance | GLP, ISO/IEC 17025-supportive data handling, FDA 21 CFR Part 11-ready with optional software |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model Series | SG (pH/mV), FE (Conductivity), FG (Ion Concentration), EL (Dissolved Oxygen) |
| Instrument Type | Portable Electrochemical Analyzer |
| Compliance | ISO/IEC 17025-ready, GLP/GMP traceable data handling, IP67-rated housing |
| Software Integration | LabX direct pH (PC-based data export to Excel, CSV, PDF) |
| Electrode Interface | SmartSensor™ digital recognition & auto-configuration |
| Calibration Modes | Up to 5-point pH, up to 3-point conductivity (Kcell auto-recognition), 2-point DO (zero/saturation), multi-point ion calibration |
| Data Storage | Internal memory for ≥2000 measurement records with timestamp, operator ID, electrode ID, and environmental conditions |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | SG2 |
| pH Range | 0.00–14.00 |
| pH Resolution | 0.01 |
| pH Accuracy (relative) | ±0.01 |
| mV Range | −1999 to +1999 mV |
| mV Resolution | 1 mV |
| mV Accuracy (relative) | ±1 |
| Temperature Range | −5.0 to 105.0 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.5 °C |
| Display | Custom LCD |
| IP Rating | IP67 |
| Data Storage | 30 measurements |
| Calibration | Up to 3-point, with predefined or user-defined buffer sets (DIN, NIST, US, TECH) |
| Connectivity | IR interface (RS232/USB via optional adapter) |
| Operating Environment | 5–40 °C, 5–80% RH (non-condensing) |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | F40K |
| Instrument Type | Multifunctional Benchtop Electrochemical Analyzer |
| Parameter Types | pH, mV, rel. mV, Temperature (ATC/MTC), ISE (with optional module) |
| pH Range | -2.000 to 20.000 |
| pH Resolution | 0.001 / 0.01 / 0.1 selectable |
| pH Accuracy | ±0.001 |
| mV Range | -1999.9 to +1999.9 mV |
| mV Accuracy | ±0.1 mV |
| Temperature Compensation | Automatic (-5 to 130 °C) and Manual (-30 to 130 °C) |
| Calibration | Up to 9-point, auto-buffer recognition, 5 pre-programmed buffer sets + 1 user-defined set |
| GLP Compliance | Full audit trail, timestamped calibration & measurement records, user management |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Shanghai, China |
| Model | S40 |
| Measurement Parameters | pH (-2.000 to 19.999), mV/ORP (-1999 to +1999 mV), Conductivity (range dependent on sensor), Ion Concentration (with ion-selective electrodes) |
| pH Accuracy | ±0.002 pH |
| pH Resolution | 0.001 / 0.01 / 0.1 selectable |
| mV Accuracy | ±0.1 mV |
| Temperature Range | -30.0 to 130.0 °C |
| Temperature Accuracy | ±0.1 °C |
| Temperature Resolution | 0.1 °C |
| Display | Backlit LCD |
| Data Storage | Up to 1000 GLP-compliant measurement records and 400 GLP-compliant calibration records |
| Compliance | GLP, ISO/IEC 17025-supporting workflows, FDA 21 CFR Part 11-ready with LabX software |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Germany |
| Model | S40K |
| Instrument Type | Benchtop (not portable — corrected per technical specification) |
| Parameter Types | pH, mV, Ion Concentration, Temperature |
| pH Measurement Range | –2.000 to 20.000 |
| pH Resolution | 0.001 |
| pH Accuracy | ±0.001 |
| mV Range | –1999.9 to +1999.9 mV |
| mV Accuracy | ±0.1 mV |
| Temperature Compensation | Automatic (ATC: –5 to 130 °C) and Manual (MTC: –30 to 130 °C) |
| Data Endpoint Modes | Auto-read, Manual, Timed Interval |
| Connectivity | RS232, USB |
| GLP Compliance | Full audit trail, user management, calibration history, timestamped records |
| Software Integration | LabX direct control, LIMS compatibility |
| Sample ID Input | Barcode scanner support |
| Automation Ready | Compatible with automated sample changers (e.g., 9-position) |
| Brand | MYRON L |
|---|---|
| Origin | USA |
| Model | Ultrameter 6P |
| Instrument Type | Portable |
| Parameter Count | 6 |
| Measurement Accuracy | ±0.01 pH |
| pH Range | 0–14 |
| pH Resolution | 0.01 |
| pH Accuracy | ±0.01 pH |
| Calibration Solution | pH 7 buffer |
| Conductivity Range | Auto-ranging 0–9999 µS/cm, 10–200 mS/cm |
| TDS Range | 0–9999 ppm, 10–200 ppt |
| Resistivity Range | 10 kΩ·cm – 30 MΩ·cm |
| ORP Range | ±999 mV |
| Temperature Range | 0–71 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.1 °C |
| Auto Temperature Compensation | Yes (0–71 °C) |
| IP Rating | IP67 (NEMA 6) |
| Data Storage | 20 points with timestamp |
| Enclosure | Fully sealed, buoyant, submersible to 1 m |
| Brand | Oakton |
|---|---|
| Origin | USA |
| Model | pH 2+ |
| Instrument Type | Pen-style pH Tester |
| Parameter Type | Single-parameter (pH) |
| pH Range | 0–14 |
| pH Resolution | 0.1 pH |
| Accuracy | ±0.1 pH |
| Calibration Buffers | NIST and USA traceable |
| Temperature Compensation | Automatic (0–50 °C / 32–122 °F) |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temperature Accuracy | ±0.5 °C (±0.9 °F) |
| IP Rating | IP67 |
| Power Source | Four A76 1.5 V alkaline batteries (included) |
| Battery Life | Up to 100 hours |
| Display | 4-digit dual-line LCD showing simultaneous pH and temperature |
| Brand | Oakton |
|---|---|
| Origin | USA |
| Model | pHTestr 50 |
| Instrument Type | Pen-style pH Tester |
| Parameter Type | Single-parameter (pH) |
| pH Range | –1.00 to 15.00 pH |
| pH Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Calibration Buffers | NIST and USA traceable standards (4.01, 6.86, 9.18 and 4.01, 7.00, 10.01) |
| Temperature Compensation | Automatic (0–60 °C / 32–140 °F) |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temperature Accuracy | ±0.5 °C (±0.9 °F) from 0–50 °C |
| Power | Four AAA 1.5 V batteries (included) |
| Battery Life | Up to 250 hours |
| IP Rating | IP67 (submersible up to 1 m for 30 min) |
| Electrode Type | Replaceable double-junction pH sensor with Kynar® junction and recessed glass bulb |
| Housing Material | Chemically resistant Valox® polymer |
| Brand | Oakton |
|---|---|
| Origin | USA |
| Model | pHTestr10BNC |
| Instrument Type | Pen-style pH Meter |
| Parameter Type | Single-parameter (pH) |
| Measurement Range | -1 to 15 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Calibration Points | Up to 3-point |
| Buffer Recognition | Automatic NIST and USA standard buffer identification |
| Temperature Range | -5 to 50 °C (23 to 122 °F) |
| Temperature Compensation | Manual |
| IP Rating | IP67 |
| Display | LCD with backlight |
| Input | BNC pH electrode connector, 8-pin mini-DIN temperature probe port |
| Power | 4 × A76 (LR44) batteries |
| Battery Life | Extended via auto-off and low-battery indicator |
| Enclosure Material | Valox® polymer housing |
| Floatation | Buoyant design for accidental submersion recovery |
| Diagnostic Features | Self-diagnostics with error codes |
| Additional Functions | Hold function, automatic shutdown, battery status indicator |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic |
| Model | AB Series In-Use Cover |
| Price | Upon Request |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | AB23PH-F |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH) with ORP & Temperature |
| Measurement Accuracy | ±0.01 pH |
| pH Range | 0.00 – 14.00 |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Calibration | Auto-buffer recognition, 2-/3-point calibration |
| Data Storage | 99 readings |
| Display | 5-inch segmented backlit LCD |
| Enclosure | ABS housing with membrane mechanical keys |
| Power | AC adapter |
| Weight | 0.38 kg |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Compliance | Designed for general laboratory use per IEC 61010-1 safety standards |
| Brand | OHAUS |
|---|---|
| Origin | USA |
| Model | AB23PH-F ZH (formerly ST2100) |
| Instrument Type | Benchtop |
| Parameter Types | Multi-parameter |
| Measurement Accuracy | ±0.01 pH |
| pH Range | 0.00 – 14.00 |
| mV Range | −1999 – +1999 mV |
| Temperature Range | 0 – 100 °C |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Accuracy | ±0.01 pH / ±1 mV / ±0.5 °C |
| Calibration | Up to 3-point, auto-buffer recognition (USA standard buffers) |
| Temperature Compensation | Automatic or manual (NTC 30 kΩ sensor, 0–100 °C) |
| Input Impedance | >10¹² Ω (pH BNC input) |
| Power Supply | 110–240 V AC, 50/60 Hz |
| Dimensions | 220 × 175 × 78 mm (W × D × H) |
| Weight | 0.75 kg |
| Display | LCD with real-time date/time stamp |
| Data Storage | Last calibration record (including timestamp) |
| Housing Material | ABS polymer |
| Compliance | CE, ISO 9001 certified, CMC licensed (China Metrology Certification) |
| Brand | OHAUS |
|---|---|
| Origin | Shanghai, China |
| Model | AB33PH |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH/mV/ORP/Temperature) |
| Measurement Range | 0.00–14.00 pH, −1999–+1999 mV, 0–100 °C |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Accuracy | ±0.01 pH / ±1 mV / ±0.5 °C |
| Calibration Solutions | China-compliant buffer set (pH 4.01, 7.00, 10.01) |
| Display | 6.5-inch backlit segmented & dot-matrix LCD with capacitive touch keys |
| Data Storage | 1,000 measurement records with timestamp |
| Connectivity | RS232 and USB |
| Power Supply | AC adapter |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Enclosure Material | ABS housing with integrated electrode stand |
| Compliance | Designed for GLP-compliant laboratory workflows |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Regional Classification | Domestic (China) |
| Model | AB33PH-F |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH/mV/ORP/Temperature) |
| Measurement Accuracy | ±0.01 pH |
| pH Range | 0.00 – 14.00 |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Calibration Solution Standard | Chinese National Standard (GB/T 604–2021 compliant) |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Model | AB33PH-F ZH (formerly ST3100) |
| Instrument Type | Benchtop |
| Parameter Types | pH / mV / Temperature |
| Measurement Accuracy | ±0.01 pH |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Calibration Buffers | USA-type (also supports Chinese & European buffer sets) |
| Data Storage | 99 measurement records + last calibration data |
| Temperature Compensation | Automatic or manual (NTC 30 kΩ sensor) |
| Input Interfaces | BNC pH input (input impedance >10¹² Ω), Cinch temperature input, 2-mm reference electrode socket |
| Communication | RS232 output (compatible with OHAUS printers) |
| Power Supply | 110–240 V AC, 50 Hz / DC 12 V |
| Dimensions | 220 × 175 × 78 mm (W × D × H) |
| Weight | 0.75 kg |
| Housing Material | ABS |
| Compliance | CE, ISO 9001, CMC certified, GLP/GMP-ready audit trail support |
| Brand | OHAUS |
|---|---|
| Origin | USA |
| Model | AB41PH-B |
| Instrument Type | Benchtop |
| Parameter Types | pH / mV / ORP / Temperature |
| Measurement Range | –2.000 to 20.000 pH |
| Temperature Range | –10.0 to 125.0 °C |
| mV Range | –2000.00 to +2000.00 mV |
| Resolution | 0.001 pH / 0.1 mV / 0.1 °C |
| Accuracy | ±0.002 pH / ±0.3 mV / ±0.3 °C |
| Display | Backlit LCD with dot-matrix line |
| Dimensions (L×H×W) | 210 × 51 × 142 mm |
| Net Weight | 0.5 kg |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Power Supply | AC adapter (included) |
| Brand | OHAUS |
|---|---|
| Origin | USA |
| Model | AB41PH-F ZH |
| Instrument Type | Benchtop |
| Parameter Types | pH / mV / ORP / Temperature |
| Measurement Range | –2.000 to 20.000 pH |
| Resolution | 0.001 pH |
| Accuracy | ±0.002 pH |
| Calibration Standard | USA-type buffers |
| Display | 6.5-inch backlit dot-matrix LCD with touch-sensitive keys |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Power Supply | AC adapter |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Regional Category | Domestic (China) |
| Model | AB33M1-B |
| Instrument Type | Benchtop |
| Parameter Types | pH, ORP, Conductivity, TDS, Salinity, Resistivity, Temperature |
| Measurement Accuracy | ±0.01 pH |
| pH Range | −2.00 to 20.00 |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Temperature Accuracy | ±0.3 °C |
| Calibration Solution Standard | China-specific buffer set |
| Display | 6.5-inch backlit segmented & dot-matrix LCD with capacitive touch keys |
| Data Storage | 1000 entries |
| Communication | RS232 and USB |
| Power | AC adapter |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Housing Material | ABS |
| Electrode Support | Integrated independent electrode stand |
| Key Features | i-Steward intelligent calibration management, dual-channel measurement capability, calibration expiry alert, auto-recognition of electrode type and calibration solution |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Regional Classification | Domestic (China) |
| Model | AB33M1-F |
| Instrument Type | Benchtop |
| Parameter Types | pH, ORP, Conductivity, TDS, Salinity, Resistivity, Temperature |
| Measurement Accuracy | ±0.01 pH |
| pH Range | −2.00 to 20.00 |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Temperature Accuracy | ±0.3 °C |
| Calibration Solution Standard | China-specific buffer set |
| Display | 6.5-inch backlit segmented & dot-matrix LCD with capacitive touch keys |
| Data Storage | 1000 records |
| Connectivity | RS232 and USB |
| Power Supply | AC adapter |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Included Electrodes | ST310 pH electrode, STCON3 conductivity electrode |
| Key Features | i-Steward intelligent calibration management, dual independent measurement channels, calibration expiry alert, ABS housing with integrated electrode stand |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Regional Classification | Domestic (China) |
| Model | AB33PH-B |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH/mV/ORP/Temperature) |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Calibration Solutions | China-specific buffer set (e.g., pH 4.01, 6.86, 9.18) |
| Temperature Range | 0–100 °C |
| mV Range | −1999 to +1999 mV |
| mV Resolution | 1 mV |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.5 °C |
| Display | 6.5-inch backlit segmented & dot-matrix LCD with capacitive touch keys |
| Data Storage | 1000 measurement records |
| Connectivity | RS232 and USB |
| Power Supply | AC adapter |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Housing Material | ABS |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | AB41PH-B |
| Instrument Type | Benchtop |
| Parameter Capability | Single-Parameter (pH), Dual-Mode (pH/mV/ORP) |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.002 pH |
| Calibration Solutions | China-Specific Buffer Set |
| Temperature Range | 0–100 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.3 °C |
| mV Range | −1999–+1999 mV |
| mV Resolution | 1 mV |
| mV Accuracy | ±0.3 mV |
| Display | 6.5-inch capacitive touchscreen LCD (segment + dot-matrix, backlit) |
| Data Storage | 1000 readings |
| Calibration Records | 10 most recent |
| GLP/GMP Compliance | Real-time clock, audit-ready data export via RS232/USB |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Housing Material | ABS |
| Integrated Features | Built-in magnetic stirrer, independent electrode stand, i-Steward intelligent measurement algorithm, three reading modes (stable, continuous, timed), calibration expiry alert, password-protected settings |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | AB41PH-F |
| Instrument Type | Benchtop |
| Parameter Types | pH / mV (ORP) / Temperature |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.002 pH |
| Calibration Solutions | China-specific buffer set |
| Display | 6.5-inch capacitive touchscreen LCD with backlight (segment & dot-matrix hybrid) |
| Data Storage | 1000 readings |
| Calibration Records | Last 10 calibrations |
| GLP/GMP Compliance | Real-time clock, audit trail, password protection |
| Connectivity | RS232 and USB |
| Enclosure | ABS housing with dedicated electrode stand |
| Operating Environment | 5–40 °C, ≤80% RH (non-condensing) |
| Dimensions (H×L×W) | 51 × 210 × 142 mm |
| Net Weight | 0.5 kg |
| Power Supply | AC adapter |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | FB2200 |
| Instrument Type | Benchtop |
| Parameter Types | Multi-parameter (pH, mV, Temperature) |
| Measurement Accuracy | ±0.01 pH |
| Measurement Range | pH 0.00–14.00 (device display range) |
| Resolution | 0.01 pH / 0.1 mV / 0.1 °C |
| Accuracy (Temperature) | ±0.3 °C |
| Calibration | Auto-buffer recognition for pH 4.00, 6.86, and 9.18 |
| Temperature Compensation | Automatic (ATC) with integrated temperature sensor |
| Calibration Standard Traceability | NIST-traceable buffer solutions |
| Display | 3.5-inch backlit segmented & dot-matrix LCD |
| Power Supply | Included AC adapter |
| Enclosure | ABS anti-contamination housing with membrane keypad |
| Electrode Mount | Integrated adjustable electrode stand |
| EMC Compliance | CE, FCC |
| Electrical Safety & EMI | EN 61326-1 |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | pH Calibration Buffer Solutions |
| Pricing | Upon Request |
| Brand | OHAUS |
|---|---|
| Model | ST10, ST20 |
| Origin | USA |
| Instrument Type | Portable pH Meter |
| Parameter Type | Single-Parameter (pH) |
| pH Measurement Range | 0.00–14.00 |
| pH Resolution | 0.1 pH (ST10), 0.01 pH (ST20) |
| pH Accuracy | ±0.1 pH (ST10), ±0.05 pH (ST20) |
| Temperature Measurement Range (ST20 only) | 0.0–99.0 °C |
| Temperature Accuracy (ST20 only) | ±0.5 °C |
| Calibration | None (ST10), 1–3 point auto-temperature-compensated calibration (ST20) |
| Buffer Sets | 4.01, 7.00, 10.01 pH |
| Display | Single-line LCD (ST10), Dual-line LCD (ST20) |
| Power | 4 × 1.5 V alkaline button cells |
| Auto-Off | 6 minutes of inactivity |
| IP Rating | IP67 |
| Electrode Type | Replaceable glass pH electrode |
| Storage Requirement | Hydrated in 3 M KCl solution |
| Compliance | Designed for general laboratory, field, and educational use per IEC 60529 (IP67), ASTM D1293 (pH of water), and ISO 7888 (water quality — determination of pH) |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | ST201 |
| Price | Upon Request |
| pH Measurement Range | 0.00 – 14.00 pH |
| Cable Length | 1.1 m |
| Electrode Body Material | Plastic |
| Dimensions (L × Ø) | 120 mm × 12 mm |
| Net Weight | 70 g |
| Temperature Operating Range | 0 °C – 80 °C |
| Integrated Temperature Sensor | No |
| Brand | OHAUS |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | ST202 |
| Price | Upon Request |
| pH Measurement Range | 0.00 – 14.00 pH |
| Cable Length | 1.1 m |
| Electrode Body Material | Plastic |
| Dimensions (L × Ø) | 120 mm × 12 mm |
| Net Weight | 70 g |
| Temperature Operating Range | 0 °C – 80 °C |
| Integrated Temperature Sensor | No |