| Multi-Parameter
        Waterproof Handheld Meters
 | PCSTestr 35 | (단종) PCTestr 35 | (단종) PTTestr 35 | 
    
      | pH | Range | 0.00 to 14.00 pH | 0.0 to 14.0 pH | 0.0 to 14.0 pH | 
    
      | Resolution | 0.01 pH | 0.1 pH | 0.1 pH | 
    
      | Accuracy | 0.01 pH | 0.1 pH | 0.1 pH | 
    
      | Calibration Points | Up to 5 (auto) | Up to 5 (auto) | Up to 5 (auto) | 
    
      | Auto-Buffer Recognition | Yes | Yes | Yes | 
    
      | Cond. | Range | 0.0 to 199.9 μS/cm 200 to 1999 μS/cm
 2.00 to 20.00 mS/cm
 | 0 to 1999 μS/cm 2.00 to 20.00 mS/cm
 | - | 
    
      | Resolution | 0.1 μS/cm / 1 μS/cm 0.01 mS/cm
 | 1 μS/cm / 0.01 mS/cm
 | - | 
    
      | Accuracy | 0.01 mS/cm | ±1 % full scale | - | 
    
      | Cal. Points | 3 auto, 3 manua | 2 auto, 2 manual | - | 
    
      | Temperature Coefficient
 | 0.0 to 10.0 %/ºC | 0.0 to 10.0 %/ºC | 0.0 to 10.0 %/ºC | 
    
      | Normalisation Temperature
 | 25.0 ºC | 25.0 ºC | 25.0 ºC | 
    
      | Auto-Ranging | Yes | Yes | Yes | 
    
      | TDS | Range | 0.0 to 99.9 ppm 100 to 999 ppm
 1.00 to 10.00 ppt
 | - | 0 to 999 ppm / 1.00 to 10.00 ppt
 | 
    
      | Resolution | 0.1 ppm / 1 ppm /0.01 ppt | - | 1 ppm / 0.01 ppt | 
    
      | Accuracy | ±1 % full scale | - | ±1 % full scale | 
    
      | Cal. Points | Up to 3 (manual) | - | Up to 2 (manual | 
    
      | TDS Factor | 0.40 to 1.00 | - | 0.40 to 1.00 | 
    
      | Salinity | Range | 0.0 to 99.9 ppm 100 to 999 ppm
 1.00 to 10.00 ppt
 0.0 to 1.00 %
 | - | - | 
    
      | Resolution | 0.1 ppm / 1 ppm 0.01 ppt / 0.01 %
 | - | - | 
    
      | Accuracy | ±1 % full scale | - | - | 
    
      | Cal. Points | Up to 3 (manual) | - | - | 
    
      | Temp. | Range | 0 to 50.0 ºC / 32 to 122.0 ºF | 
    
      | Resolution | 0.1 ºC / 0.1 ºF | 
    
      | Accuracy | 0.5 ºC / 0.9 ºF | 
    
      | Temp. Compensation | ATC / MTC | 
    
      | Sensor Type | pH / Conductivity / TDS / Salinity / Temperature | 
    
      | Non-Volatile Memory | Yes | 
    
      | Auto-Off | 8.5 mins after last key pressed (can be disabled) | 
    
      | LCD Display | Dual-display LCD (2.1 x 2.7 cm) | 
    
      | Power | 4 x 1.5 V “A76” micro alkaline batteries | 
    
      | Battery Life | > 150 hrs | 
    
      | Dimensions ; Weight | Tester: 16.5 cm x 3.8 cm ; 90 g Boxed: 18.5 cm x 6.5 cm x 5 cm ; 200 g
 |