Extech PH701 Water Quality pH Meter

For water quality technicians, hydroponic growers, and laboratory staff who need fast, reliable pH readings in the field or at the bench, the Extech PH701 delivers precision in a rugged, pocket-sized package. Its IP67 waterproof housing and replaceable electrode make it a dependable tool for testing pools, aquariums, wastewater, and process liquids.

Key specifications

• pH range: 0.00 to 14.00 pH with ±0.01 pH accuracy
• Automatic temperature compensation from 0 to 60°C (32 to 140°F)
• 3-point automatic calibration at 4.00, 7.00, and 10.00 pH
• Backlit LCD display with data hold function
• IP67 waterproof rating for harsh environments
• Powered by 4 CR2032 button batteries with auto power off

Why choose it

The PH701 combines laboratory-grade accuracy with field-ready durability. Its replaceable electrode extends the meter's service life, while the backlit display ensures readability in dim conditions. The included neck strap and protective cap make it easy to carry and store.

Ideal use cases

• Swimming pool and spa water testing
• Aquarium and aquaculture monitoring
• Hydroponic nutrient solution checks
• Wastewater treatment sampling
• Educational and laboratory demonstrations

Good to know

The meter features automatic temperature compensation, so you get accurate pH readings without manual adjustments. It automatically shuts off after 10 minutes of inactivity to conserve battery life.