pH/EC/TDS/Temperature meter with CAL CHECK�, Range: pH 0.0 to 14.0 pH EC 0.00 to
| pH/EC/TDS/Temperature meter with CAL CHECK�, Range: pH 0.0 to 14.0 pH EC 0.00 to 4.00 mS/cm TDS 0 to 1999 ppm (mg/L) |
| pH/EC/TDS/Temperature meter with CAL CHECK�, Range: pH 0.0 to 14.0 pH EC 0.00 to 4.00 mS/cm TDS 0 to 1999 ppm (mg/L) |