For sale: Hanna Instruments GroChek HI9813-6 Combo pH/EC/TDS/Temperature Portable Meter – new, open box, never used or powered on!
This professional-grade, water-resistant multiparameter tester is perfect for hydroponics, greenhouses, nurseries, aquaponics, or any grow setup needing accurate nutrient monitoring.
Key Features:
Measures pH (0-14), EC (0.00-4.00 mS/cm), TDS (0-1999 ppm), and temperature (°C/°F) with a single probe
CAL Check™ feature (alerts for probe calibration/replacement needs)
Easy front-panel knob calibration (manual single-point for pH/EC)
Large LCD display with on-screen instructions
Automatic temperature compensation (ATC) for accurate readings
Rugged, portable design with replaceable probe (HI1285-6 series compatible)
Ideal for checking nutrient solutions, reservoirs, runoff, etc.
Condition: New – open box only (packaging opened, but meter/probe unused, no wear, scratches, or test marks). Includes the meter, combination probe (attached or in protective cap—check yours), any calibration solutions if present (often 1413 µS/cm or pH buffers), and original box/manual if available. Serial number: 857521. Smoke-free/pet-free home in Michigan.
Why this is a steal: New retail often $200+ from hydro suppliers—this open-box unit saves big while delivering full Hanna accuracy and reliability!
Shipping: Fast USPS Priority from Sault Ste. Marie, MI (free shipping option or calculated). Securely packaged with bubble wrap/probe protection.
No returns on testing equipment (due to sensitivity), but message with questions or for more photos—I can power it on briefly for verification if requested. Thanks for looking—happy growing! 🌱"