1. automatic calibration 2.automatic temperature compensation 3.automatic range switch

pen-type TDS meter 5031

Model	5031
Measurement range	(0-49.9)ppm (50-499)ppm (0.50-5.00)ppt
Resolution	0.1ppm/1;0.01ppt
Accuracy	±1.0%FS
Automatic compensation	(5 to 50)°c

other  parameter

1.automatic calibration :one point (4.20)ppt

2.power :AAA*2,     1.5V*2

3.IP57 waterproof  with portable case

4.size and weight :(39*25*176)mm/95g

Meter Kits

1.a piece of TDS meter 5031

2.one bottle of calibration solution (4.20)ppt

3.3*AAA batteries

4. a manual