Value Series Portable Conductivity/TDS Meter Kit

What It Is

The Apera EC850 is a handheld portable meter that measures electrical conductivity (EC), total dissolved solids (TDS), and temperature in a single rugged unit. It is part of Apera's Value Series and is sold as the AI5512 complete kit — meter, BPB 2301T-S conductivity/temperature electrode, calibration solutions, carrying case, and screwdriver for battery replacement all included.

At the heart of the EC850 is Apera's proprietary BPB (Brush-resistant Platinum Black) electrode technology. The 2301T-S electrode delivers lab-grade accuracy across an ultra-wide range of 0 to 200 mS/cm (0 to 200,000 µS/cm), making it equally capable on ultra-pure RO input water and on high-EC drain-to-waste runoff from heavily loaded coco or rockwool systems. The PVC electrode body is corrosion-resistant, and the integrated temperature sensor enables automatic temperature compensation (ATC) across varying environmental conditions.

Who It's For

Commercial cannabis and hemp cultivation operations run tighter feed programs than any other crop category — and accurate EC data is the foundation of that precision. Whether you're dialing in a recirculating deep water culture system, verifying fertigation EC before it hits a dripper line, checking runoff EC for salt buildup in coco, or sampling source water from an RO unit, the EC850 gives you repeatable, trustworthy numbers rather than the drift-prone readings you get from cheap pocket testers.

The EC850 is particularly well suited to multi-room and multi-site operations where a meter needs to move from zone to zone and occasionally take a splash or a drop without failing. The IP57 waterproof and dustproof rating plus the silicone grip cover means the instrument can live in the conditions a grow facility actually presents — humidity, nutrient splatter, and tight working spaces — rather than only in a dry lab environment. The fold-out stand also lets it function as a benchtop unit when you need a stable reading at a mixing station.

Key Features

Calibration is handled with a 1- to 3-point automatic process that recognizes standard solutions of 84 µS/cm, 1413 µS/cm, 12.88 mS/cm, and 111.8 mS/cm. The built-in self-diagnosis function confirms calibration is being performed correctly and guides the user through fixing common errors — important in a commercial setting where multiple staff members may be operating the meter across shifts. Calibration standards for 1413 µS/cm and 12.88 mS/cm are included in the kit.

Parameter flexibility is above average for this class of meter. Cell constant, reference temperature, and temperature compensation coefficient are all user-configurable. The TDS conversion factor is adjustable from 0.40 to 1.00, which matters when you're trying to correlate EC readings with specific nutrient salt profiles rather than using a generic default. The large backlit LCD displays the conductivity or TDS reading and temperature simultaneously, with a stability icon (smiley face) that signals when a reading has settled — eliminating the guesswork of whether to record the value.

How It Fits a Commercial Build

In a licensed cultivation environment, EC monitoring isn't a single-point task — it happens at intake (source water), at the mix tank (target feed EC), at the dripper (delivery verification), and at the medium or runoff (salt load and uptake efficiency). A single EC850 kit handles all four checkpoints. Its wide measurement range means you don't need separate meters for low-EC source water and high-EC nutrient solution.

The included carrying case keeps the electrode protected and the calibration solutions organized — a practical consideration when the meter is moving between rooms or facilities. The BNC connector on the instrument is compatible with Apera's LabSen series electrodes, giving you a path to upgrade or swap electrodes as your monitoring needs evolve without replacing the entire meter body. Apera backs the instrument with a 3-year warranty and a 6-month warranty on the electrode.