4-in-1 Multi-Parameter Water Quality Tester Portable Pen Design Water Quality Meter with Backlit LCD Display for Pool Spa Aquarium

The CL-X41 is a 4-in-1 portable water quality tester designed to measure Free Chlorine, pH, ORP, and Temperature with a single handheld device. Featuring a pen-style form factor, backlit LCD display, and ±2% F.S accuracy, it delivers reliable on-site readings for pools, spas, aquariums, and drinking water applications.

• 4-in-1 multi-parameter measurement: Free Chlorine, pH, ORP, and Temperature
• Portable pen design for easy carrying and operation
• Backlit LCD display for clear readings in dim environments
• High measurement accuracy of ±2% F.S
• One-key calibration and data hold function
• Compact size suitable for on-site water inspection
• Widely used for swimming pools, spas, fish tanks, and tap water

Suitable for swimming pools, hot spring spas, aquarium fish tanks, drinking water, water treatment facilities, and laboratory water quality detection.

• 1 × CL-X41 4-in-1 Water Quality Tester
• 1 × Manual
• 1 × Pack of Calibration Powder
• 4 × LR44 Batteries