The Apera WS100 (AI4725) is a portable, multi-parameter meter designed for measuring fluoride concentration, pH, and temperature in water-quality testing and commercial cultivation environments. It combines the patented F501 3-in-1 fluoride ion probe with a 201T-S combination pH electrode featuring automatic temperature compensation (ATC). The F501 probe integrates fluoride-ion sensing, a reference electrode, and a temperature sensor into one unit, allowing direct fluoride measurements without sample stirring or added reagents. The meter complies with EPA Method 340.2 for potentiometric fluoride analysis and is suitable for testing source water, reverse-osmosis (RO) output, and other water samples where fluoride concentration matters.
The WS100 features a backlit display, automatic calibration, electrode self-diagnostics, and storage for 300 measurement records. Its IP57-rated enclosure protects against dust and temporary immersion, making it suitable for laboratory and field use. The kit includes the meter, both electrodes, fluoride and pH calibration solutions, batteries, and a hard carrying case. (Hydro Supply Co.)
• Product Type: Portable fluoride/pH meter kit
• Brand: Apera Instruments
• Model: WS100
• SKU: AI4725
• Measurement Parameters: Fluoride concentration, pH, and temperature
• Fluoride Measurement Range: 0.02–1,900 ppm
• Fluoride Accuracy: ±0.02 ppm or ±5% of reading, whichever is greater
• Fluoride Calibration: Automatic 2-point calibration
• Fluoride Calibration Standards: 0.19 mg/L and 19.0 mg/L
• Fluoride Probe: Patented F501 3-in-1 fluoride ion probe integrating the ion-selective electrode, reference electrode, and temperature electrode
• Fluoride Measurement Method: Direct potentiometric measurement without sample stirring or added reagents
• Initial Probe Preparation: Requires a 10-minute activation soak before first use
• pH Measurement Range: 0–14.00 pH
• pH Electrode: 201T-S combination pH electrode with automatic temperature compensation
• pH Calibration: Automatic 3-point calibration
• pH Calibration Buffers: pH 4.00, 7.00, and 10.01
• Fluoride Display Units: mg/L, ppm, ppt, and pF
• EPA Compliance: Designed to comply with EPA Method 340.2 for fluoride analysis
• Data Storage: 300 measurement records, including measurement value, temperature, and units
• Display: Large backlit screen
• Additional Functions: Electrode self-diagnostics, backlight adjustment, and automatic power-off
• Water and Dust Protection: IP57-rated housing, designed for dust-tight protection and temporary immersion up to 1 metre for 30 minutes
• Power Supply: 3 × AA batteries, included
• Included Fluoride Calibration Solutions: 0.19 mg/L and 19.0 mg/L, 50 mL each
• Included pH Calibration Solutions: pH 4.00, 7.00, and 10.01 buffers, 50 mL each
• Other Included Accessories: WS100 meter, F501 fluoride probe, 201T-S pH electrode, screwdriver, backup batteries, instruction manual, and hard carrying case
• Primary Applications: Fluoride testing in drinking water, source water, RO output, and wastewater
• Cultivation Applications: Source-water verification and water-quality monitoring for commercial fertigation programs
• Probe Replacement: Replacement fluoride and pH probes are available separately
• Meter Warranty: 2 years
• Probe Warranty: 6 months
Key Advantage: The Apera WS100 combines fluoride and pH testing in one rugged handheld instrument, with a dedicated probe for each parameter. Its direct fluoride measurement requires no added reagents or sample stirring, simplifying routine field testing. The 300-record memory and IP57-rated housing support quality-control documentation in laboratories and commercial production facilities, particularly where fluoride levels in source water need to be monitored. (Hydro Supply Co.)