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pH & ORP Meters
Tackle your pH and ORP sample analysis with ease
Unlock precision and performance with Orion bench and portable pH/ORP meters. Whether in the lab or the field, achieve accurate measurements for pH and oxidation-reduction potential (ORP). Our bench pH/ORP meters are expertly engineered to provide precise laboratory analysis- featuring advanced functionality and robust data management. For field applications, our portable pH/ORP meters offer high performance in compact, easy-to-carry designs- ensuring reliable testing in a variety of environments. From detailed lab work to quick, on-the-go measurements, Orion pH/ORP meters are the ideal solution to help tackle your analytical challenges. Browse our complete portfolio or let one of our experts assist you in making the right selection.
Select your pH/ORP bench or portable meter
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Versa Star Pro pH/ORP Bench Meter (Versa Star Pro series) | Orion Pro Star PH211 pH/ORP Bench Meter (Pro Star series) | Orion Lab Star PH111 pH/ORP Bench Meter (Lab Star series) | |
 |  |  | |
| Versatile, high-performance laboratory meters | Easy to use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, industrial | Environmental, water/ wastewater, food & beverage, industrial | Academic, environmental, power |
| pH range | –2.000 to 20.000 | –2.000 to 20.000 | –2.000 to 18.000 |
| pH resolution | 0.001 / 0.01 / 0.1 | 0.001 / 0.01 / 0.1 | 0.001 / 0.01 / 0.1 |
| pH calibration points | Up to 6 | Up to 5 | Up to 5 |
| mV, RmV/ORP modes | Yes | Yes | Yes |
| Temperature range | -5 to 105°C 23 to 221°F | -30 to 130°C -22 to 266°F | -5 to 105°C 23 to 221°F |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | — |
| Display | 5.3-inch, backlit color display | 7-inch, high-resolution, backlit color display | 5-inch, backlit segmented display |
| Touchscreen | No | Yes | No |
| Onscreen text prompts | Step-by-step calibration and guided setup instructions | Step-by-step calibration and guided setup instructions | Basic calibration and setup instructions |
| Identification options | Electrode ID, sample ID, user ID | Electrode ID, sample ID, user ID | — |
| Data log | 2000 with date/time | 10000 with date/time | 500 with date/time |
| Calibration log | 30 per parameter | 20 per parameter | — |
| Data export options | Computer, printer | Computer, printer, USB flash drive | Computer, printer |
| Power supply | Universal, 100–240 VAC, 50-60 Hz (Cat. No. STARA-PWR) | Universal, 100-240 VAC, 50-60 Hz (Cat. No. PSTAR-PWR), 9 DC adapter, 2.0A | Universal, 100-240 VAC, 50-60 Hz (Cat. No. LSTAR-PWR), 9 DC adapter, 1.3A |
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Star A321 pH Portable Meter (Star A3210 series) | Orion Star A221 pH Portable Meter (Star A2210 series) | Orion Star A121 pH Portable Meter (Star A1210 series) | |
 |  |  | |
| Premium rugged, easy-to-use portable field meters | Advanced portable meters, easy-to-use, dependable field meters | Basic portable meters, budget-friendly, simplified field meters | |
| Ideal for applications in: | pH, mV, ORP, and temperature testing, and field applications | Advanced pH analysis ideal for outdoor environments and field applications | IP67-rated housing for rugged protection in outdoor environments |
| pH range | –2.000 to 20.000 pH | –2.000 to 20.000 pH | 2.00 to 16.00 pH |
| pH resolution | 0.1. 0.01, 0.001 pH | 0.1. 0.01, 0.001 pH | 0.1. 0.01 pH |
| pH relative accuracy | ±0.002 pH | ±0.002 pH | ±0.01 pH |
| pH calibration points | Up to 5 | Up to 5 | Up to 3 |
| mV mode | Yes | Yes | Yes |
| ORP mode | Yes | Yes | No |
| Range (temperature) | –5.0° to 105.0°C, 22.0° to 221.0°F | –5.0° to 105.0°C, 22.0° to 221.0°F | –5.0° to 105.0°C, 22.0° to 221.0°F |
| Temperature compensation | Automatic or manual | Automatic or manual | Automatic or manual |
| Data points | 5000 with date and time stamp | 1000 with date and time stamp | 50 |
| Data export options | RS232, USB | RS232, USB | --- |
| Power supply | 4 AA batteries: 800 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) | 4 AA batteries: 800 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) | 4 AA batteries: 2,000 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
先进 | 基础 | |
|---|---|---|
| Eutech pH2700 台式 pH 值测量仪 | Eutech 1710 台式 pH 值测量仪 | |
 |  | |
| 经济的常规实验室测量仪 | 经济简单的实验室测量仪 | |
| pH 范围 | –2.000 - 20.000 | –2.00 - 18.00 |
| pH 分辨率 | 0.001 / 0.01 / 0.1 | 0.01 |
| pH 校准点 | 最多6个 | 最多5个 |
| mV、RmV 模式 | 是 | 是 |
| ORP 模式 | 是 | 是 |
| 温度范围 | 0.0 - 100.0 °C，32.0 - 212.0 °F | -5.0 - 105.0 °C |
| 背光显示屏 | 是 | 是 |
| 屏幕文字提示 | 基本校准和设置提示 | 基本校准和设置提示 |
| 通道数 | 1 | 1 |
| 数据日志 | 500（包含日期/时间） | 100 |
| 校准日志 | 可在测量仪上查看最新日志，校准日志存储在测量仪存储器中 | 有效 pH 值、RmV、温度（带有时间和日期） |
| 数据导出选项 | RS232 | 计算机或打印机 |
| 电源 | 通用型，100-240VAC，50/60 Hz，货号 60X426401 | 通用型，100–240VAC，50–60Hz（货号 EB1700PWR），9 DC 适配器，1.3A |
观看视频，了解更多信息。
Eutech 1710 pH/mV 台式测量仪的特点与优势
高端 | 高级 | 高级 | 基本 | 基本 | |
|---|---|---|---|---|---|
 |  |  |  |  | |
| pH 范围 | –2.00 - 16.00 | –2.00 - 16.00 | –2.00 - 20.00 | 0.00 - 14.00 | 0.00 - 14.00 |
| pH 分辨率 | 0.01 pH | 0.01 pH | 0.1 / 0.01 pH | 0.01 pH | 0.01 pH |
| pH 相对精度 | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.01 pH |
| pH 校准点 | 最多6个 | 最多5个 | 最多6个 | 最多3个 | 最多3个 |
| mV 模式 | 是 | 是 | 是 | 是 | --- |
| ORP 模式 | --- | --- | 是 | 是 | --- |
| 背光显示屏 | 是 | --- | 是 | --- | --- |
| 范围（温度） | -10.0 - 110.0 °C (14.0 - 230.0 °F) | -10.0 - 110.0 °C (14.0 - 230.0 °F) | -10.0 - 110.0 °C (14.0 - 230.0 °F) | 0.0 - 100.0 C | 0.0 - 100.0 C |
| 屏幕测试提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 |
| 温度补偿 | 自动或手动 | 自动或手动 | 是 | 自动或手动 | 自动或手动 |
| 数据点 | 500（包含日期和时间戳） | 150 | 500（包含日期和时间戳） | --- | --- |
| 数据导出选项 | USB 或 RS232 | --- | RS232C（通过 LED）、IrDA | --- | --- |
| 电源 | 2节 AA 电池（附带）/9 V DC 适配器，1.3 A（100/240 VAC，SMPS）（选配） | 2节 AA 电池（附带）/9 V DC 适配器，1.3 A（100/240 VAC，SMPS）（选配） | 4节 AA 电池（附带）/9 V DC 适配器 (500 mA) | 4节 AAA 电池 | 4节 AAA 电池 |
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Versa Star Pro pH/ORP Bench Meter (Versa Star Pro series) | Orion Pro Star PH211 pH/ORP Bench Meter (Pro Star series) | Orion Lab Star PH111 pH/ORP Bench Meter (Lab Star series) | |
| | | |
| Versatile, high-performance laboratory meters | Easy to use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, industrial | Environmental, water/ wastewater, food & beverage, industrial | Academic, environmental, power |
| pH range | –2.000 to 20.000 | –2.000 to 20.000 | –2.000 to 18.000 |
| pH resolution | 0.001 / 0.01 / 0.1 | 0.001 / 0.01 / 0.1 | 0.001 / 0.01 / 0.1 |
| pH calibration points | Up to 6 | Up to 5 | Up to 5 |
| mV, RmV/ORP modes | Yes | Yes | Yes |
| Temperature range | -5 to 105°C 23 to 221°F | -30 to 130°C -22 to 266°F | -5 to 105°C 23 to 221°F |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | — |
| Display | 5.3-inch, backlit color display | 7-inch, high-resolution, backlit color display | 5-inch, backlit segmented display |
| Touchscreen | No | Yes | No |
| Onscreen text prompts | Step-by-step calibration and guided setup instructions | Step-by-step calibration and guided setup instructions | Basic calibration and setup instructions |
| Identification options | Electrode ID, sample ID, user ID | Electrode ID, sample ID, user ID | — |
| Data log | 2000 with date/time | 10000 with date/time | 500 with date/time |
| Calibration log | 30 per parameter | 20 per parameter | — |
| Data export options | Computer, printer | Computer, printer, USB flash drive | Computer, printer |
| Power supply | Universal, 100–240 VAC, 50-60 Hz (Cat. No. STARA-PWR) | Universal, 100-240 VAC, 50-60 Hz (Cat. No. PSTAR-PWR), 9 DC adapter, 2.0A | Universal, 100-240 VAC, 50-60 Hz (Cat. No. LSTAR-PWR), 9 DC adapter, 1.3A |
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Star A321 pH Portable Meter (Star A3210 series) | Orion Star A221 pH Portable Meter (Star A2210 series) | Orion Star A121 pH Portable Meter (Star A1210 series) | |
| | | |
| Premium rugged, easy-to-use portable field meters | Advanced portable meters, easy-to-use, dependable field meters | Basic portable meters, budget-friendly, simplified field meters | |
| Ideal for applications in: | pH, mV, ORP, and temperature testing, and field applications | Advanced pH analysis ideal for outdoor environments and field applications | IP67-rated housing for rugged protection in outdoor environments |
| pH range | –2.000 to 20.000 pH | –2.000 to 20.000 pH | 2.00 to 16.00 pH |
| pH resolution | 0.1. 0.01, 0.001 pH | 0.1. 0.01, 0.001 pH | 0.1. 0.01 pH |
| pH relative accuracy | ±0.002 pH | ±0.002 pH | ±0.01 pH |
| pH calibration points | Up to 5 | Up to 5 | Up to 3 |
| mV mode | Yes | Yes | Yes |
| ORP mode | Yes | Yes | No |
| Range (temperature) | –5.0° to 105.0°C, 22.0° to 221.0°F | –5.0° to 105.0°C, 22.0° to 221.0°F | –5.0° to 105.0°C, 22.0° to 221.0°F |
| Temperature compensation | Automatic or manual | Automatic or manual | Automatic or manual |
| Data points | 5000 with date and time stamp | 1000 with date and time stamp | 50 |
| Data export options | RS232, USB | RS232, USB | --- |
| Power supply | 4 AA batteries: 800 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) | 4 AA batteries: 800 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) | 4 AA batteries: 2,000 hrs. battery life (included) or optional universal, 100–240 VAC (sold separately) |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
先进 | 基础 | |
|---|---|---|
| Eutech pH2700 台式 pH 值测量仪 | Eutech 1710 台式 pH 值测量仪 | |
| | |
| 经济的常规实验室测量仪 | 经济简单的实验室测量仪 | |
| pH 范围 | –2.000 - 20.000 | –2.00 - 18.00 |
| pH 分辨率 | 0.001 / 0.01 / 0.1 | 0.01 |
| pH 校准点 | 最多6个 | 最多5个 |
| mV、RmV 模式 | 是 | 是 |
| ORP 模式 | 是 | 是 |
| 温度范围 | 0.0 - 100.0 °C，32.0 - 212.0 °F | -5.0 - 105.0 °C |
| 背光显示屏 | 是 | 是 |
| 屏幕文字提示 | 基本校准和设置提示 | 基本校准和设置提示 |
| 通道数 | 1 | 1 |
| 数据日志 | 500（包含日期/时间） | 100 |
| 校准日志 | 可在测量仪上查看最新日志，校准日志存储在测量仪存储器中 | 有效 pH 值、RmV、温度（带有时间和日期） |
| 数据导出选项 | RS232 | 计算机或打印机 |
| 电源 | 通用型，100-240VAC，50/60 Hz，货号 60X426401 | 通用型，100–240VAC，50–60Hz（货号 EB1700PWR），9 DC 适配器，1.3A |
观看视频，了解更多信息。
Eutech 1710 pH/mV 台式测量仪的特点与优势
高端 | 高级 | 高级 | 基本 | 基本 | |
|---|---|---|---|---|---|
| | | | | |
| pH 范围 | –2.00 - 16.00 | –2.00 - 16.00 | –2.00 - 20.00 | 0.00 - 14.00 | 0.00 - 14.00 |
| pH 分辨率 | 0.01 pH | 0.01 pH | 0.1 / 0.01 pH | 0.01 pH | 0.01 pH |
| pH 相对精度 | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.01 pH |
| pH 校准点 | 最多6个 | 最多5个 | 最多6个 | 最多3个 | 最多3个 |
| mV 模式 | 是 | 是 | 是 | 是 | --- |
| ORP 模式 | --- | --- | 是 | 是 | --- |
| 背光显示屏 | 是 | --- | 是 | --- | --- |
| 范围（温度） | -10.0 - 110.0 °C (14.0 - 230.0 °F) | -10.0 - 110.0 °C (14.0 - 230.0 °F) | -10.0 - 110.0 °C (14.0 - 230.0 °F) | 0.0 - 100.0 C | 0.0 - 100.0 C |
| 屏幕测试提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 | 基本校准和设置提示 |
| 温度补偿 | 自动或手动 | 自动或手动 | 是 | 自动或手动 | 自动或手动 |
| 数据点 | 500（包含日期和时间戳） | 150 | 500（包含日期和时间戳） | --- | --- |
| 数据导出选项 | USB 或 RS232 | --- | RS232C（通过 LED）、IrDA | --- | --- |
| 电源 | 2节 AA 电池（附带）/9 V DC 适配器，1.3 A（100/240 VAC，SMPS）（选配） | 2节 AA 电池（附带）/9 V DC 适配器，1.3 A（100/240 VAC，SMPS）（选配） | 4节 AA 电池（附带）/9 V DC 适配器 (500 mA) | 4节 AAA 电池 | 4节 AAA 电池 |
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