Hanna Instruments GroLine Waterproof Portable pH/EC/TDS Meter

Portable multi-parameter meter for measuring pH, conductivity, and dissolved solids in agricultural and hydroponic systems.

Measures pH, EC, and TDS with one handheld device
Designed for hydroponics, greenhouse, and agricultural use
Waterproof, rugged design for field and lab environments
High-accuracy readings with calibration capability
Supports real time monitoring of nutrient solutions
Supports CTE agriculture and plant science pathways (NGSS: MS-PS1, HS-ESS3)

The GroLine Waterproof Portable Meter provides students with a professional grade tool for monitoring water quality in agricultural and hydroponic systems. By measuring pH, electrical conductivity, and total dissolved solids, students can evaluate nutrient availability and solution balance - key factors in successful plant production.

Ideal for CTE and agriscience programs, this meter allows students to engage in real world practices such as nutrient management, irrigation monitoring, and greenhouse system optimization. Its rugged, waterproof design supports both classroom instruction and hands-on use in growing environments. Through data collection and analysis, students develop a deeper understanding of how water chemistry influences plant health and productivity, reinforcing NGSS concepts related to matter interactions and environmental systems.