Hanna Combo HI98129 pH/EC/TDS/Temperature Tester with Low Range EC pH Testers Fits all popular brand trays

Fits all popular brand trays from multiple manufacturers

Efficiency & Sustainability: Not only do these blocks promise better growth

and increased if the light intensities are higher

and areas designated for smoking

Hanna Combo HI98129 pH/EC/TDS/Temperature Tester with Low Range EC pH Testers Fits all popular brand traysThe HI 98129 Combo waterproof tester offer high accuracy pH, EC TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo (it even floats) has a large easy to read, dual level LCD and automatic shut off. pH and EC TDS readings are automatically compensated for the effects of temperature (ATC). This technologically advanced tester has a replaceable pH electrode cartridge