pHTestr 10/20/30

• Large custom dual display LCD 
• Up to 3-point push button calibration for greater accuracy
• Auto-buffer recognition for added convenience 
• 100% dustproof for firm grip 
• Ribbed body for firm grip 
• User-replaceable double-junction Ag/AgCl polymer sensor 

pHTestr 10 
• 0.1 pH resolution 

pHTestr 20 
• 0.01 pH resolution 

pHTestr 30 
• 0.01 resolution 
• Temperature display