Labmate Portable Multiparameter Water Quality Meter LMWM-701

Key Features

• Measures pH, ORP, ion concentration, TDS, salinity, conductivity, resistivity, and dissolved oxygen

• Backlit LCD for easy visualization

• Automatic electrode recognition and calibration (1–5 points for pH, 2–5 points for ions, 1–5 points for conductivity)

• Supports relative and absolute mV modes for ORP

• Automatic temperature, salinity, and barometric pressure compensation

• Stores up to 500 data sets with USB export capability

• Lightweight and portable (300 g)

• Dual power options: 3 × 1.5 V AA batteries or 5 V DC adapter

• Eight measurement modes for versatile analysis

Applications
Water quality testing, environmental monitoring, research and development, water resources management, and field-based analysis.

Technical Highlights

Parameter	Specification
pH Range	-2.000 to 20.000 pH
pH Resolution	0.001, 0.01, 0.1 (selectable)
pH Accuracy	±0.002 pH
ORP Range	±1999.9 mV
ORP Resolution	0.1, 1 mV (selectable)
ORP Accuracy	±0.2 mV
Ion Concentration Range	0.001 to 19,999 (depending on ISE)
Ion Accuracy	±0.5% F.S. (monovalent), ±1% F.S. (divalent)
Conductivity Range	0.01–200 mS/cm (multiple scales)
Conductivity Accuracy	±0.5% F.S.
TDS Range	0–200 ppt or 0–1000 ppm (selectable)
TDS Accuracy	±1% F.S.
Salinity Range	0.00–80.00 ppt, 0.00–42.00 psu
Salinity Accuracy	±1% F.S.
Resistivity Range	0.00–20.00 MΩ
Resistivity Accuracy	±1% F.S.
DO Range	0.00–20.00 mg/L
DO Accuracy	±0.2 mg/L or ±2%
Temperature Compensation	0–100 °C / 32–212 °F, manual or automatic
Memory	500 data sets
Power Supply	3 × 1.5 V AA batteries or 5 V DC adapter
Dimensions	170 × 85 × 30 mm
Weight	300 g

Features

• 500 data set storage with recall

• Automatic multi-point calibration

• Reset function restores factory settings

• Temperature, salinity, and pressure compensation for accurate readings

• Portable, lightweight, and user-friendly design