The Avain Labs® 7-in-1 Combo pH-TDS-EC-ORP-Salinity-Specific Gravity-Temperature Meter COM-700 is a versatile, high-precision digital water quality testing instrument designed to provide accurate measurement of seven essential water parameters in a single handheld device. Ideal for laboratories, water treatment plants, aquaculture, hydroponics, environmental monitoring, swimming pools, research institutions, and industrial quality control, the COM-700 delivers reliable performance with advanced sensor technology.

This professional-grade meter measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Oxidation Reduction Potential (ORP), Salinity, Specific Gravity (S.G.), and Temperature, eliminating the need for multiple instruments. Featuring a splash-proof housing, compact ergonomic design, and easy-to-read LCD display, the COM-700 is suitable for both laboratory and field use.

With automatic temperature compensation, excellent measurement accuracy, and user-friendly operation, the Avain Labs® COM-700 ensures dependable results for routine testing and advanced analytical applications.

Key Features

• 7-in-1 Multi-Parameter Water Quality Meter
• Measures pH, EC, TDS, ORP, Salinity, Specific Gravity & Temperature
• High-accuracy digital sensor technology
• Splash-proof water-resistant housing
• Fast response and stable readings
• Compact, lightweight, and portable design
• Suitable for laboratory, industrial, and field applications
• Easy-to-read LCD display
• Ideal for professional water quality analysis

Technical Specifications

Measurement Range

• pH: 0.0 to 14.0 pH
• EC: 0 to 9990 µS
• TDS: 0 to 9990 ppm
• ORP: -999 mV to +999 mV
• Salinity:
  • 0.00 to 25.0%
  • 0 to 9999 ppm
  • 10.1 to 200.0 ppt
• Specific Gravity (S.G.): 1.000 to 1.2222
• Temperature: 0.1 to 50°C

Resolution

• pH: 0.1 pH
• EC: 1 µS
• TDS: 1 ppm
• ORP: 1 mV
• Salinity / S.G.:
  • SG: 0.01%
  • 0.1%
  • 1 ppm
  • 0.1 ppt
• Temperature: 0.1°C / °F

Accuracy

• pH: ±0.1 pH
• Overall Accuracy: ±2% F.S.

Operating Temperature

• 0 to 60°C

Housing

• Water Resistant (Splash Proof)

Power Supply

• 3 × 1.5V LR44 Batteries

Dimensions

• 183 × 37 × 37 mm

Applications

The Avain Labs® COM-700 is widely used in:

• Water Treatment Plants
• Drinking Water Testing
• RO & DM Water Systems
• Aquaculture & Fisheries
• Hydroponics & Agriculture
• Swimming Pools & Spas
• Pharmaceutical Laboratories
• Chemical Industries
• Food & Beverage Industry
• Environmental Monitoring
• Educational Institutions
• Research & Development Laboratories
• Industrial Quality Control

Why Choose Avain Labs® COM-700?

The Avain Labs® COM-700 combines seven essential water quality measurements into one compact and reliable instrument, making it an economical and efficient solution for professionals. Its wide measuring range, high accuracy, splash-proof construction, and portable design make it suitable for both laboratory analysis and on-site testing. Whether monitoring drinking water, industrial process water, or hydroponic nutrient solutions, the COM-700 delivers fast, precise, and dependable results.