Portable pH Pen/Meter
Captive Purity Portable pH Pen/Meter YM-901

Digital pH Meter Tester - Universal Tester!
1. Pen type pH meter
2. Lightweight, compact
3. Read quickly and accurately
4. Switching film
5. Long low battery power consumption
6. Waterproof
7. Features: automatic cutoff switch
8. Low power consumption (as long as there is any view
Guarantee the accuracy)
9. Operating Temperatures: 0`C to 50`C (ATC)

Specifications:

Large Readout Display
Range: 0.00-14.00 pH
Resolution: 0.01 pH resolution
Accuracy: =+/- 0.03 pH
Fixed Electrode .changeable electrode

Operating Temperatures: 0`C to 50`C (ATC)
ATC: Automatic Temperature Compensation for accurate readings!
Power Supply: 4 x 1.5 Volt (Button Battery)
Battery Life: 1000 hours of continuous use
Size: 6" x 1.00" Largest Diameter
Weight: 70 Grams
http://ymjdea.zhan.cn.yahoo.com/