Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

  • 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 a 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 the measurement
  • Up to 2000 hours continuous operation, powered by AAA batteries