ULTRAPENx2™ PTBT1 Specifications: System Requirements: Myron L® Company PTBTX2™ App: Apple iOS 10.0 or later; Android OS 7.0 or later. Measurement Range: Conductivity & TDS: 1-9999 µS or ppm; Salinity: 0.0010-9.999 ppt; Temperature: 0°-71°C / 32°-160°F Accuracy (After Wet Calibration): ± 1% of Reading; Temperature: ± 0.1ºC Resolution: Conductivity and TDS: 0.1 for 1.0 – 99.9 µS or ppm 1 for 100 – 9,999 µS or ppm Salinity: 0.0001 for 0.0010 – 0.0999 ppt 0.001 for 0.100 – 9.999 ppt Temperature: 0.1ºC orºF Repeatability: <1000 µS or ppm ± 1 Count ≥ 1000 µS or ppm ± 0.3% of Reading Time to Reading Stabilization: 10 – 20 seconds Power Consumption: Active Mode: 30 – 140 mA, Sleep Mode: 2 µA Temperature Compensation Method: Automatic to 25ºC Physical Dimensions: 17.15 cm L x 1.59 cm D or 6.75 in. L x .625 in. D Weight: 55 g or 1.94 oz. Case Material: Anodized Aircraft Aluminum with Protective Coating Battery Type: One N type, Alkaline 1.5 V Calibration Standard Solution: KCl: 1800 µS for COND; 442™: 3000 ppm (2027 ppm NaCl) for TDS and Salinity Operating/Storage Temperature: 0 – 55ºC or 32 – 131ºF Water Resistance: IP67 and NEMA 6 EN61236-1: 2006 – Annex A: 2008; Electrostatic discharge to the PTBT1 may cause it to spontaneously power on. If this occurs, the PTBT1 will power off after several seconds. FCC ID: T7VPAN17 The Bluetooth transceiver device meets the requirements for modular transmitter approval as detailed in FCC Public Notice DA00-1407. Canada (IC), license: IC: 216Q-PAN17 The Bluetooth transceiver device meets the requirements for modular transmitter approval as detailed in RSS-GEN. WARNING! These products can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. ULTRAPENx2™ PTBT1 Functions: MODE PARAMETER SOLUTION MODEL UNITS Cond KCl Conductivity potassium chloride microsiemens (µS) TDS 442 Total Dissolved Solids (TDS) Myron L® Company, 442 Natural Water™ Standard Solution parts per million (ppm) TDS NaCl Total Dissolved Solids (TDS) sodium chloride parts per million (ppm) SAL 442 Salinity (SAL) Myron L® Company, 442 Natural Water™ Standard Solution parts per thousand (ppt) SAL NaCl Salinity (SAL) sodium chloride parts per thousand (ppt)

ULTRAPENx2™ PTBT1 Applications: Agriculture Hydroponics Desalination Aquaculture Pharmaceutical Boilers and Cooling Towers Fountain Solutions for Printing Horticulture Wastewater Pool and Spa Food and Beverage Irrigation Reverse Osmosis