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Click to go home Shop for TDS Meters, Monitors and Controllers for reverse osmosis, water filter and water purification systems Learn more about TDS and how it affects your water, reverse osmosis, water filters and water purification systems Frequently Asked Questions Where to buy HM Digital products Learn about HM Digital, Inc. Contact HM Digital, Inc.
 HANDHELDS
 TDS Meter 3
 TDS Meter 4
 TDS Meter 4TM
 EC/TDS Combo Meter
 Thermometer
 IN-LINE MONITORS
 Dual TDS Monitor
 Dual TDS Monitor 2
 Clean Tap Monitor
 RO Monitor
 CONTROLLERS
 Panel Mount Controller
 Dual TDS Controller
 Dual Display Controller
 Conductivity Controller
 ACCESSORIES
 Calibration Solutions
 pH Buffers
 ORP Buffers & Test Kit
 Sensors
 
PRODUCTS KNOWLEDGE CENTER COMPANY INFORMATION
Handheld TDS Meter 3 (TDS-3) What is TDS? About HM Digital
Handheld TDS Meter 4 (TDS-4) How TDS affects your health Contact HM Digital
Handheld TDS Meter with Thermometer (TDS-4TM) How TDS affects the taste of water HM Digital Distributors
Industrial Digital Thermometer (TM-1) Filter performance and TDS Where to buy our products
Inline Dual TDS Monitor (DM-1) Water Hardness and TDS Warranty
Commerical Inline Dual TDS Monitor (DM-2) TDS and aquariums & aquaculture Home Page
Clean Tap Monitor (CT-1) TDS and hydroponics & gardening
RO Monitor (currently discontinued) TDS and pools & spas
TDS Panel Mount Controller - Single Line (PS-100) TDS in commecial & industrial applications
TDS Controller - Dual Line/Single Screen (PS-200) TDS and colloidal silver
TDS Controller - Dual Line/Dual Screen (PS-202) Calibration & Maintenance
Conductivity Controller - Single Line (PC-100)
OEM TDS Purity Monitor (PM-1)
External Purity Monitor (PM-1)
TDS Calibration Solutions
pH Buffer Solutions
ORP Buffer Solutions
Sensors
Waterproof EC/TDS/TEMP Combo Meter (COM-100)
Waterproof pH Meter (PH-200)
Waterproof ORP Meter

 
Copyright © 2005 HM Digital, Inc. All rights reserved.HOME Buy TDS meters and purchase TDS Meters. Our TDS-3 is $39.00. You can also find our TDS meters at various locations and buy them from our distibutors. Buy one today! We have TDS meters in stock. We always keep a stock of all our TDS meters. You will be able to buy a pH meter from us soon. Our TDS meters are In-Stock. Great items and low prices. The TDS-4 is only $39 and the TDS-4TM is only $42.00. Call for pricing on other products.