Hanna Instruments GroLine Waterproof Pocket pH/EC/TDS/Temperature Tester

All-in-one handheld tester for monitoring pH, nutrients, and water quality in hydroponic and agricultural systems.

• Measures pH, EC, TDS, and temperature in a single device
• Designed for hydroponics, greenhouse, and agricultural applications
• Waterproof, pocket-sized design for field and lab use
• Fast digital readout for real time decision making
• Automatic temperature compensation for accuracy
• Supports CTE pathways in agriculture and plant science (NGSS: MS-PS1, HS-ESS3)

The GroLine Waterproof Pocket Tester is designed to support hands-on learning in agricultural science and CTE programs, particularly in hydroponics, greenhouse management, and plant production systems. By combining pH, electrical conductivity, total dissolved solids, and temperature measurements into one device, students can monitor nutrient solutions and water quality in real time, mirroring practices used in modern agriculture.

This tool enables students to make data driven decisions about nutrient management, irrigation, and plant health, reinforcing key CTE competencies in agriscience pathways. The durable, waterproof design is suitable for both classroom labs and active growing environments. By integrating multiple measurements, students gain a systems-level understanding of how water chemistry impacts crop production, supporting NGSS aligned investigations into chemical properties and human impacts on environmental systems.