DM-1

In-Line Dual TDS Monitor

TDS

Dual Range:
0-999 ppm or
1,000-9,990 ppm

Dual 
(in & out)

± 2%

DM-2

Commercial In-Line Dual TDS Monitor With Additional Features  
(See Features Tab)

TDS

Dual Range:
0-999 ppm or
1,000-9,990 ppm

Dual 
(in & out)

± 2%

SM-1

In-Line Single TDS Monitor

TDS

Dual Range:
0-999 ppm or
1,000-9,990 ppm

Single (1)

± 2%

QC-1

Quick Check “Push to Check” Monitor with Green “Good” and Red “Service” Lights.  Eight programmable set points.

TDS & Conductivity

0-5,000 ppm
0-10,000 µS

Single (1)

± 3%