Apera Instruments AI209 밸류 시리즈 PH20 방수 pH 테스터 키트, ±0.1 pH 정확도

["Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)","Backed by Apera quality pH sensor with low impedance, ensuring high response rate","Comes in a rugged carrying case with pH 4&7 buffers and a lanyard","Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement","Up to 2000 hours' continuous operation, powered by AAA batteries"]