Product purpose and benefits Quick, reliable check to verify whether water from treatment devices or bottles meets expected mineral/ionized levels. Helps you spot malfunctioning or improperly performing appliances (energy/functional/ionized water machines, ultrafiltration or RO purifiers, alkaline or mineralizing cups) before you consume or use the water. Fast, simple indication (builtin light) for immediate pass/fail feedback without needing technical knowledge. Key features and attributes Function: Simple mineral/ionization presence indicator — builtin light turns on when mineral water is detected; no light indicates nonmineral or lowmineral water. Compatibility: Works with energy water machines, functional water machines, ionized water machines, ultrafiltration water purifiers, RO water purifiers, alkaline or mineralized energy cups, and bottled mineral water. Probe material: precision copper probe for more accurate and faster detection compared with generic probes. Design: Penstyle tester for portable, onehanded use. Tiponly immersion keeps the main body safe from water damage. Performance: Fast response time and clear visual indication for immediate decisions. How it solves problems Confirms appliance performance after installation or filter changes so you won't rely on improperly treated water. Verifies bottled or source water quality at a glance, reducing uncertainty about what you drink. Prevents accidental exposure to unexpectedly lowmineral water when a specific mineral/ionized level is required for health or appliance function. Simple use instructions 1. Gently immerse only the pen tip and copper probe into the water sample; do not submerge or wet the main body. 2. Observe the builtin light: illuminated = mineral water detected; not illuminated = no mineral detection. 3. Remove the pen, rinse the probe with clean water, then dry and store. Care and handling Do not wet the main body; exposure can damage electronics. Rinse and wipe the probe after each use to avoid residue buildup. Store in a dry place when not in use. Practical use scenarios After replacing filters in an RO or ultrafiltration system, test the output water to confirm the system is producing the expected mineral profile. Check bottled mineral water or water from an ionizer before use to confirm you're getting mineralized water. Verify water from an alkaline or mineralized energy cup while traveling or at work to ensure the cup's function is active. What to expect A fast, visible light indication that helps you decide whether water is mineralized or not. Improved confidence in water treatment devices and bottled products through simple, routine checks. Note: Follow the immersion guidance carefully — only the probe should contact the water to avoid damaging the pen's main body.