1. ZT-2: Basic TDS Tester

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2. TDS-EZ: Economy TDS Tester

 3. TDS-3: TDS Meter with Case

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4. TDS-4TMA: Aquarium TDS/Temp Meter

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5. AP-1: AquaPro Water Quality Tester (TDS)

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6. PH-80: pH HydroTester

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7. COM-100: Waterproof EC/TDS/Temp Meter

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8. PH-200: Waterproof pH Meter

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9.TM-1: Digital Thermometer

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10. COM-100: Waterproof EC/TDS/Temp Meter

COM-100 Users Guide Español HORTITEC 2011 – Download Instruction Manual

COM-100 Users Guide Francais – Download Instruction Manual

COM-100 Users Guide 2010 ITA Indoorline – Download Instruction Manual

MC-COM-100 Users Guide 2010 – Download Instruction Manual