袖珍TDS

TDS-EZ

Pocket TDS Tester ideal for end users and basic water testing applications

0-9990 ppm

NO

NO

HM Digital

TDS-3

Pocket TDS tester ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver for both consumer and commercial use. Includes Case.

0-9990 ppm

YES

YES (°C)

HM Digital

TDS-4

Pocket TDS tester ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver for both consumer and commercial use. Includes Case.

0-9990 ppm

YES

NO

HM Digital

TDS-4TM/A

Pocket TDS tester ideal for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI, to know when to changes filters and membranes. 
In Retail Aquarium Packaging. 

(Replaces TDS-4TM.  The meter is identical to TDS-4TM, but it includes retail packaging.)

0-9990 ppm

YES

YES (°C)

HM Digital

AP-1

AquaPro Pocket TDS Testers are designed for retail use for the tech-savvy and health-conscience consumer or hobbyist. 

0-5000 ppm

YES

YES (°C/F)

HM Digital

AP-2

Pocket Electrical Conductivity Tester w/digital temperature display

0-9999 µS

YES

YES (°C/F)

HM Digital

HI98301

Hanna DiST 1

Pocket TDS Tester ideal for use in monitoring EC/TDS in drinking water, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics and the printing industry.

10-1990 ppm

YES

NO

Hanna Instruments

HI98302
Hanna DiST 2

100-10,000 ppm

YES

NO

Hanna Instruments

HI98203

The SALINTEST can help you accurately monitor the concentration of sodium chloride in aquaculture systems. Besides applications in aquaculture, SALINTEST is also ideal for checking salt concentrations in live fish storage tanks, tropical fish aquariums, refrigerated storage and oceanographic investigations.

0.00-1.00 pNaCL

NO

NO

Hanna Instruments