GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester - HI98131 The HI98131 measures pH, conductivity (EC), total dissolved solids (TDS) and temperature with selectable EC to TDS conversion factor. The pH readings are displayed with a 0.01 resolution and with an accuracy of ±0.05 pH. EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full scale accuracy. The EC range of the HI98131 is from 0.01 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor or 0 to 3999 with a 0.7 EC to TDS conversion factor. • 3 parameters, pH, EC/TDS, and temperature in one meter • Quick Cal Mode to calibrate pH and EC/TDS with one solution • TDS Conversion Factor selectable between 0.5 (500 ppm) and 0.7 (700 ppm) 167. Soil Test™ Direct Soil EC Tester - HI98331 The HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil electrolytic conductivity (EC) and temperature for quick and accurate readings. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conductivity measurements in soil eliminating the need to create soil slurries. • Allows for direct measurement in soil • 4.5" Stainless Steel Penetration Electrode • Automatic Temperature Compensation Authorized Dealer Of Shree Vissnu Scientific Company In Coimbatore, Madurai, Tiruchirappalli, Tiruppur, Salem, Erode, Thoothukudi, Karur, Tuticorin, Coimbatore, Madurai, Nilgiris, Kancheepuram, Theni, Erode, Thanjavur, , Namakkal, Krishnagiri, Coimbatore, Dindigul, Tiruppur, Theni, Tirunelveli, Vellore, Thiruvannamalai, OOty Kancheepuram, Cuddalore, Salem, Tiruppur, Cuddalore, Erode, , Erode, Namakkal, Salem, Kancheepuram, Madurai, Namakkal, Perambalur, Nilgiris, Theni, Tuticorin, pondicherry, kanjikode, Palakkad, Hosur, mandiya, Malur, Nanjangodu, hosur sipcot phase-1, phase visit us our website