ZenTest Smart Pocket pH/Conductivity/TDS/Salinity/Resistivity/ORP Tester Kit

What It Is

The Apera ZenTest PCO60-Z is a seventh-generation smart pocket tester that consolidates pH, conductivity (EC), ORP/Redox, TDS (ppm), salinity (ppt), resistivity, and temperature measurement into one field-ready instrument. Unlike the PC60-Z, this kit ships with the ORP probe included — no add-on purchase required to run full redox checks on your nutrient reservoir or RO-treated source water.

The tester pairs to the free ZenTest app on iOS, iPadOS, macOS, or Android via Bluetooth 5.0, giving you real-time readings, step-by-step calibration guidance, four visualization modes (simple, dial, graph, or table), and a cloud-based data logger with unlimited storage. If your phone isn't with you on the floor, the unit functions as a conventional standalone tester with its 3-color backlit LCD — no connectivity required.

Who It's For

This tester is designed for licensed cannabis and hemp cultivation operations that need reliable, documented water-quality data at every stage: source water intake, reservoir preparation, fertigation mix verification, and runoff monitoring. Growers running coco, rockwool, or recirculating hydro systems where EC drift and pH swing directly impact yield and compliance need a meter that stays calibrated and leaves a record.

The asset-tagging function in the ZenTest app lets you tie readings to specific tanks, reservoirs, or batch IDs — useful when multiple zones or rooms share a facility and a head grower or compliance officer needs batch-level traceability. The ability to email measurement and calibration data directly from the app simplifies internal reporting and third-party audits without any manual transcription.

Key Features

The combo probe uses Apera's proprietary lithium-glass membrane with a double-junction reference system, which significantly reduces junction clogging — a real issue when testing complex or particulate-laden nutrient solutions. The platinum black conductivity sensor covers 0 to 200,000 µS/cm without requiring frequent maintenance or recalibration across the range. The ORP platinum probe ships in the kit, so you're ready to test sanitizer efficacy or oxidation state on day one.

Calibration is guided step-by-step in the ZenTest app with up to 3-point auto-calibration for pH and multi-point calibration for conductivity. Auto Temperature Compensation (ATC) from 0–50°C keeps readings accurate regardless of water temp. The 3-color backlit display (blue = measuring, green = calibration, red = alarm) and stable-value recognition (smiley face indicator) eliminate guesswork on whether a reading has settled. Battery life reaches up to 2,000 hours on 4 AAA batteries (included), with a low-battery warning and auto-shutoff after 8 minutes of inactivity.

How It Fits a Commercial Grow Build

In a multi-room or multi-site operation, keeping consistent measurement standards matters as much as the readings themselves. The PCO60-Z's replaceable probe design means the meter body doesn't get retired when a sensor wears out — you swap the probe at a fraction of the cost of a new unit. The cloud-based data system backs up every manual and auto-logged measurement automatically, so data isn't lost if a device is damaged or replaced.

The kit includes everything needed to get started: the PCO60-Z tester body, the ORP probe, pH and conductivity calibration solutions, calibration bottles, storage solution, 4 AAA batteries, a lanyard, and a portable carrying case. Compatible accessory probes — including a spear probe (PH60S-DE) for substrate samples and a flat probe (PH60F-DE) for surface measurements — expand the tester's utility beyond reservoir work to substrate and runoff testing in one instrument platform. Apera backs the instrument with a 2-year warranty and the probe with a 6-month warranty.