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Bluelab® pH Controller

Bluelab® pH Controller — continuous monitoring with auto pH dosing. Set target pH, it maintains it 24/7. Essential for hydroponics. Agrifirst India.

The Bluelab® pH Controller continuously monitors nutrient solution pH and automatically doses pH-up or pH-down solution to maintain your target setpoint. This eliminates the most labor-intensive and error-prone task in nutrient management — manual pH adjustment — ensuring your crops always receive optimally pH'd nutrient solution, 24/7.

Trusted by 500+ farmers
Expert support
Quality assured

4x more

precision with 0.1 pH dosing accuracy

3x safter

with in-built overdose protection

2x easier

setup with auto-resume and flexible mounting

Bluelab® pH Controller — Automated pH Dosing for Consistent Nutrient Solutions

Bluelab® pH Controller is a professional automated pH management system that continuously monitors your nutrient solution and automatically adds acid (pH-down) or alkali (pH-up) to maintain your exact target pH. Once set, it runs 24/7 without human intervention — delivering perfectly pH'd nutrient solution to your crops at all times.

Key Features

  • Continuous Monitoring — Industrial-grade pH probe monitors solution pH 24/7
  • Auto Dosing — Peristaltic pump doses pH adjustment solution in precise micro-amounts
  • Set & Forget — Set your target pH (e.g., 5.8) and the controller maintains it automatically
  • Alarm System — Visual and audible alarms if pH drifts outside set limits
  • Replaceable Probe — Industrial pH probe is field-replaceable

Technical Specifications

pH Range0.0–14.0 pH
Setpoint Range1.0–12.0 pH (adjustable)
DosingPeristaltic pump — precise micro-dosing
DisplayBacklit LCD with current pH and setpoint
AlarmsHigh/low pH alarms — visual and audible
ProbeReplaceable industrial pH electrode
Power240V AC

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Product Brochure Download detailed specifications
Common Questions

Frequently Asked Questions

What does the Bluelab pH Controller do?
It automatically monitors and adjusts pH levels in your reservoir, ensuring consistent pH for optimal nutrient availability.
What size reservoir is it suitable for?
It can control pH in reservoirs up to 200 US gallons (760 litres).
Does this controller work for both pH up and pH down?
Yes, you can set it to dose either pH-up (alkali) or pH-down (acid) based on your growing system’s needs.
Where is the Bluelab pH Controller made?
It is designed and assembled in New Zealand from local and imported components.
How does the Bluelab pH Controller maintain pH levels?
It uses a 10 ml/min peristaltic pump to precisely dose the reservoir. The dosing routine allows proper mixing before the next dose. It automatically resumes dosing after power loss.
Does it have safety features?
Yes, it includes: High and low pH alarms to alert when pH is out of range. Built-in safety lockouts to prevent overdosing. Dosing pause during alarm mode to protect plants.
How does it handle temperature changes?
It comes with a temperature probe to ensure automatic pH compensation for accurate dosing.
Where can I mount the pH Controller?
It offers flexible mounting options for walls, posts, and racks.
How do I set up the Bluelab pH Controller?
Simply install the pH probe and dosing tube into your reservoir. Set your desired pH range and dosing direction (up or down). The controller will automatically monitor and adjust pH.
How often should I calibrate the pH probe?
Regular calibration every 30 days ensures accuracy. Follow the on-screen calibration instructions using pH 4.0 and pH 7.0 solutions.

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Our Office Agrifirst Lucknow (Registered Office)

Plot No E-7, Industrial Area, Kanpur - Lucknow Rd, near Audi Service Center, Sarojini Nagar, Lucknow, Uttar Pradesh 226401, INDIA


Call Us 918188084460

Email Us info@agrifirst.in