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The AVAIN LABS® Dissolved H₂ Meter-ORP-Temp. Meter Combo YY-406 is a compact multi-parameter digital meter designed for convenient measurement of dissolved hydrogen (H₂), ORP (Oxidation-Reduction Potential), and temperature. It provides accurate and easy-to-read measurements in a portable format, making it suitable for laboratory, water-quality, research, and analytical applications.
The YY-406 measures dissolved hydrogen from 0 to 2400 ppb (0 to 2.40 ppm), with a resolution of 2 ppb and accuracy of ±10 ppb. It also measures ORP from -1200 to +1200 mV, with a resolution of 1 mV and accuracy of ±5 mV. Temperature measurement is provided with 0.1 °C resolution, ±0.2 °C accuracy, and a 0 to 50 °C ATC range.
Its compact dimensions of 175 × 41 × 23 mm and battery-powered operation using 4 × 1.5 V LR44 batteries make the YY-406 convenient for routine measurements and portable testing.
| Parameter | Specification |
|---|---|
| Model | YY-406 |
| Measurement Range – Dissolved Hydrogen | 0–2400 ppb / 0–2.40 ppm |
| Measurement Range – ORP | -1200 to +1200 mV |
| Resolution – Dissolved Hydrogen | 2 ppb |
| Resolution – ORP | 1 mV |
| Resolution – Temperature | 0.1 °C |
| Accuracy – Dissolved Hydrogen | ±10 ppb |
| Accuracy – ORP | ±5 mV |
| Temperature Accuracy | ±0.2 °C |
| Temperature ATC Range | 0–50 °C |
| Power Source | 4 × 1.5 V (LR44) |
| Dimensions | 175 × 41 × 23 mm |