Bluelab Commercial Truncheon Meter

Bluelab Commercial Truncheon Meter — High-Range EC/PPM Nutrient Meter for Commercial Hydroponic Crops

The Bluelab® Commercial Truncheon® Nutrient Meter is the heavy-duty conductivity meter built for commercial hydroponic operations and high-EC crops that push beyond the range of standard nutrient meters. With a conductivity range up to 6.0 EC (60 CF / 3,000 PPM ×500 / 4,200 PPM ×700), the Commercial Truncheon handles the most demanding nutrient programs without ever leaving you short of range.

Like the original Truncheon, the Commercial version is engineered for simplicity and durability: fully waterproof, no on/off buttons, no calibration required, and auto-sense activation that turns the meter on when submerged and off when removed. The result is a meter that is always ready, always accurate, and virtually maintenance-free. Battery life is a minimum of one year (or the shelf life of the battery), and the meter is backed by Bluelab's 5-year guarantee — one of the strongest warranties in the industry.

Displays EC (0.4–6.0), CF (4–60), and PPM scales (TDS ×500 and ×700) simultaneously via LED indicators. Meter length: 40.7 cm (16 1/32 in).

Key Features

• High-range conductivity measurement: EC 0.4–6.0 / CF 4–60 / PPM ×500 and ×700
• Designed for high-EC commercial hydroponic crops
• Fully waterproof construction
• No calibration required — factory calibrated
• No on/off buttons — auto-sense activation
• Minimum 1-year battery life
• 5-year Bluelab® Guarantee
• Meter length: 40.7 cm (16 1/32 in)

Frequently Asked Questions

What is the Bluelab Commercial Truncheon Meter and who is it designed for?

The Bluelab Commercial Truncheon Meter is a high-range conductivity (EC/PPM) meter designed for commercial hydroponic growers and crops that require elevated nutrient concentrations beyond the range of standard EC meters. With a maximum range of 6.0 EC (60 CF / 4,200 PPM ×700), it is ideal for high-EC crops such as tomatoes, peppers, cucumbers, and other fruiting vegetables grown in commercial greenhouse or indoor farm environments where nutrient programs regularly exceed 3.0–4.0 EC.

How does the Bluelab Commercial Truncheon Meter differ from the Original Truncheon?

The primary difference is the measurement range. The Bluelab Original Truncheon Meter is designed for standard hydroponic nutrient ranges, while the Commercial Truncheon extends the upper range to 6.0 EC (60 CF / 4,200 PPM ×700) to accommodate high-EC commercial crop programs. Both meters share the same fully waterproof, no-calibration, auto-sense design and are backed by Bluelab's 5-year guarantee. The Commercial Truncheon is the right choice when your nutrient program regularly operates above the range of the standard model.

Does the Bluelab Commercial Truncheon Meter need to be calibrated?

No. The Bluelab Commercial Truncheon Meter is factory-calibrated and requires no field calibration. This is one of its key advantages for commercial operations — there is no calibration routine to maintain, no calibration solutions to stock, and no risk of calibration error. Simply submerge the meter in your nutrient solution and read the EC, CF, or PPM value from the LED indicators. The auto-sense feature activates the meter automatically when submerged and turns it off when removed, conserving battery life.

What conductivity scales does the Bluelab Commercial Truncheon display?

The Commercial Truncheon simultaneously displays readings on multiple conductivity scales via LED indicators: EC (0.4–6.0 mS/cm), CF (4–60), PPM ×500 (TDS scale), and PPM ×700. This multi-scale display eliminates the need to manually convert between units, making the meter compatible with any nutrient program or growing guide regardless of which conductivity convention it uses.

Where can I buy the Bluelab Commercial Truncheon Meter?

The Bluelab Commercial Truncheon Meter is available through Seres Ag, a professional hydroponic and CEA equipment supplier serving commercial growers across the United States. Purchase directly at seresag.com. Seres Ag offers expert product support, competitive wholesale and retail pricing, and US-wide shipping. For bulk or wholesale inquiries, contact the Seres Ag team through the website.