Bluelab

What stands out about Bluelab here is something easy to miss on a product page: roughly half the range is not a meter but upkeep. There are the instruments, the pH pen, the EC pen, the soil pen, the Combo and Combo Plus, the Multimedia pH meter, the Guardian Wifi, the Pulse and the Truncheon. And there is an equally long row around them: separate pH electrodes including the Leap, calibration fluids in pH 4 and 7 and EC 2.77, KCL storage fluid, cleaning and calibration kits for pH, for EC and for both, a carry case and a starter pack.

Where it sits, and why that second half matters

All of it is under Measuring and Control. A pH meter that is not calibrated gives a number that looks fine and is not, and an electrode stored dry is ruined. So on a first order put the calibration fluid and the storage fluid in with it; that is not an upsell but the condition under which the instrument does what you expect.