5-in-1 Digital Water Quality Tester Pen for pH, TDS, ORP, EC & Temperature Monitoring

Ensure optimal water purity, chemical balance, and nutrient concentration with this 5-in-1 Digital Water Quality Tester Pen. Designed for comprehensive liquid diagnostics, this multi-functional testing pen measures five essential parameters in a single compact device: pH, Total Dissolved Solids (TDS), Oxidation-Reduction Potential (ORP), Electrical Conductivity (EC), and Temperature. Featuring a high-sensitivity glass electrode, Automatic Temperature Compensation (ATC), and a clear backlit digital LCD screen, it delivers fast, laboratory-grade analytics without requiring multiple standalone meters. Whether monitoring drinking water filters, maintaining pool and spa chemistry, managing hydroponic nutrient reservoirs, or caring for sensitive aquarium ecosystems, this waterproof tester pen provides complete water quality confidence.

Key Features

• 5-in-1 Multi-Parameter Diagnostics: Simultaneously tests pH, TDS, ORP, EC, and Temperature for total liquid analysis in one handheld tool.

• Automatic Temperature Compensation (ATC): Internal sensor automatically compensates for fluid temperature variations to ensure consistent reading accuracy.

• High-Precision Glass Probe: High-sensitivity glass electrode delivers rapid response times across diverse water environments.

• Backlit HD Digital LCD Screen: Clear illuminated display allows effortless reading of metrics in direct sunlight or dim equipment areas.

• IP67 Waterproof & Dustproof Design: Durable pen-style body with protective cap withstands accidental drops into water tanks or pools.

Why Choose Our 5-in-1 Digital Water Tester

Carrying five separate testing devices or relying on hard-to-read paper test strips is inconvenient, costly, and prone to inaccurate color matching. Standard single-function pens miss crucial metrics like ORP or EC, leaving you blind to sanitizer strength or total mineral density in your filtration setup. This 5-in-1 water quality meter combines multi-metric tracking, automated thermal compensation, IP67 waterproof durability, and pocket-sized convenience—giving your aquarium care, hydroponic growing, pool maintenance, and drinking water testing an instant professional upgrade.

Perfect For

• Testing drinking water purifiers, reverse osmosis (RO) systems, and household filtration performance

• Managing nutrient concentration and pH balance in hydroponic reservoirs, indoor gardens, and aquaponics

• Monitoring water quality in freshwater and marine aquariums, reef tanks, and koi ponds

• Verifying sanitizer effectiveness and chemical balance in swimming pools, hot tubs, and spas

• Gifting as a practical pool owner gift, aquarium enthusiast present, or grower tool essential

Specifications

• Testing Metrics: pH / TDS / ORP / EC / Temperature

• Temperature Compensation: Automatic Temperature Compensation (ATC)

• Waterproof Rating: IP67 Waterproof & Dustproof

• Display Type: Backlit Digital LCD Screen

• Features: Multi-Unit Mode Switch, Data Hold Function, Low Battery Indicator

• Ideal Uses: 5-in-1 Digital Water Quality Tester, pH TDS ORP EC Pen, Aquarium Water Monitor