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The ULTRAPEN PTBT2 pH and Temperature Pen. It's wireless and now in stock at Myron L Meters.
 
Ultrapen PTBT2 Bluetooth wireless pH tester

Perfect for pool techs, hydroponics growers, and water professionals.
 
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MyronLMeters.com
3460 Marron Road #103-341
Oceanside, CA 92056
myronlmeters@gmail.com
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