Introduction

Small sample volumes are hard to measure with a standard glass electrode, and opening vessels for sampling adds contamination risk. The compact USB-powered PreSens pH-1 SMA LG1 Micro pH Meter reads optical pH sensors through the wall of a transparent vessel, so pH can be measured without taking a sample.

Technical Specifications

The figures below come from the manufacturer's data. The core specifications for the PreSens pH-1 SMA LG1 Micro pH Meter are:

• Model: pH-1 SMA LG1
• Measurement range: pH 4.0 to 7.5
• pH sensors: type LG1 (optical SMA connector, 2 mm POF)
• Temperature sensor input: 1 x Pt100 connector (sensor not included)
• Temperature performance: 0 to +50 °C, resolution ±0.1 °C, accuracy ±1.0 °C
• Power supply: 5 VDC via USB 2.0 Mini-B (cable included)
• Operating temperature: 0 to +50 °C
• Storage temperature: +5 to +40 °C
• Relative humidity: 0 to 80% (non-condensing)
• Dimensions: 101 mm (with connectors) x 35 mm x 30 mm
• Weight: 128 g
• Digital interface: USB cable to PC (included)
• Software: PreSens Measurement Studio 2

Standard Accessories Included

• USB interface cable

Items Excluded

• Pt100 temperature sensor
• Polymer optical fiber (POF)
• LG1 sensors, such as SP-LG1-SA sensor spots, dipping probes or flow-through cells
• Integration set IS-SP
• PC

Pre-installation Requirement

• A PC running Windows 10 or 11 for PreSens Measurement Studio 2.

Key Benefits

Several daily bottlenecks ease when you work with the non-invasive and compact PreSens pH-1 SMA LG1 Micro pH Meter.

Efficiency

USB power means no extra power supply or adapter is needed, and the unit sets up in a few quick steps.

Accuracy

Temperature compensation keeps pH readings precise when the temperature changes.

Safety and comfort

Non-invasive measurement avoids opening the vessel, which reduces contamination risk.

Read more on the PreSens pH-1 SMA LG1 system page. You can also compare it with our benchtop pH meter kit.

Key Features

• Non-invasive pH measurement through the vessel wall
• Temperature compensation
• One calibration for a multitude of sensor spots
• Several PreSens pH, O2 and CO2 devices can be controlled from one PC

Solving Common Lab Problems

Losing sample volume every time you check pH? The PreSens pH-1 SMA LG1 Micro pH Meter for daily lab work measures from outside the vessel through optical sensors.

Need long-term monitoring? It suits continuous pH monitoring in bioreactors, culture vessels and perfusion systems.

Warranty & Support

We provide a 1-year manufacturer's warranty covering parts and labor. Technical support, installation assistance, and operational training are also available. Replacement parts and consumables are available throughout the product's service life.

Request a Quotation or Technical Datasheet

Contact us about the reliable PreSens pH-1 SMA LG1 Micro pH Meter for your lab for more information, customized configurations, and solutions tailored to your specific requirements.