APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy & AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy & AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

• Product 1: Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
• Product 1: Backed by Apera quality pH sensor with low impedance, ensuring high response rate
• Product 1: Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
• Product 1: Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
• Product 2: Reported values are accurate to +/- 0.01 pH at 25 °C and are traceable to NIST Standard Reference Materials (SRMs).
• Product 2: Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment.
• Product 2: color-coded for quick identification.
• Product 2: Double-sealed. 2-year expiration from manufacture for an unopened bottle.