SKU: 44355740267

Milwaukee C66 Waterproof High Range Conductivity Pen with ATC and Replaceable Electrode

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Description

Milwaukee C66 Waterproof High Range Conductivity Pen with ATC and Replaceable ElectrodeMilwaukee C66 Waterproof High Range Conductivity Pen with ATC and Replaceable Electrode The Milwaukee Conductivity Pen is designed for hydroponic and other growers. It helps to make sure that plants are receiving the right amount of nutrients. Features: Measures conductivity and temperature with automatic temperature compensation Ideal range for hydroponics (0. 00 to 10. 00 mS cm) Units in mS cm easily convertible to ppm Factory calibrated with the

Milwaukee C66 Waterproof High Range Conductivity Pen with ATC and Replaceable Electrode

The Milwaukee Conductivity Pen is designed for hydroponic and other growers.  It helps to make sure that plants are receiving the right amount of nutrients.

Features:

  • Measures conductivity and temperature with automatic temperature compensation
  • Ideal range for hydroponics (0.00 to 10.00 mS/cm)
  • Units in mS/cm easily convertible to ppm
  • Factory calibrated with the ability to recalibrate if needed
  • Replaceable electrode
  • Fully waterproof to IP65
  • 250 hours continuous use (3 x 1.5V batteries included)

 Specifications:

  • Range: 0.00 to 10.00 mS/cm
  • Resolution: 0.01 mS/cm
  • Accuracy: ±2% Full Scale
  • Typical EMC Deviation: ±2% Full Scale
  • Temperature Compensation: Automatic from 5 to 50°C, with ß=2%/°C
  • Calibration: Manual, at 1 point through trimmer
  • Probe: MA73076 (replaceable)
  • Environment: 0 to 50°C / 32 to 122°F; max RH 100%
  • Battery Type: 3 x 1.5V (included)
  • Battery Life: Approx. 250 hours of continuous use
  • Dimensions: 6.5 x 1.2 x 1.2 inches
  • Weight: 3.5 ounces

Milwaukee C66 Manual


CARE AND USE

MAINTENANCE

EC electrodes can develop nutrient build up over time. To minimize build up, always rinse the probe in fresh tap water after every use.

CONVERTING EC TO TDS

The Milwaukee EC Pen, like all conductivity meters, provides a measure of electrically charged ions in a solution and is an absolute measure of conductivity.

EC is often converted to TDS in parts per million (ppm). Different scales include the 500 scale, 650 scale and the 700 scale. However, true PPM can only be determined through chemical analysis.

Your mS/cm reading can be approximately converted to TDS (ppm) as shown in the examples below.

2.00 mS/cm = 2000 uS/cm = 1000 ppm on .50 factor scale
2.00 mS/cm = 2000 uS/cm = 1400 ppm on the 442 scale or .70 factor scale

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 44355740267

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Ms. Jackson
Omaha, US
★★★★★ 5
If Fluffy was a person lol
Color: Blue, Color: Blue
Came vacuum sealed. No smell. I ABSOLUTELY LOVE how fluffy it is!!! The color is a perfect match to my car. I don’t have an emergency break lever so I couldn’t use that. Overall 10 out of 10 rt now!
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Reviewed in the United States on May 15, 2026
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Lelee
Chelsea, US
★★★★★ 4
Cute lil shedding but it’ll do 🩷
Color: Hot Pink, Color: Hot Pink
Cute I love it looks good 🩷🩷🩷🩷 lil shedding but it’ll do
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Reviewed in the United States on May 2, 2026
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Brittney k
Birmingham, US
★★★★★ 5
Yes get this one!
Color: Pink
Oh yes this is a good one! So fluffy, and perfect, it came with a sample of real vs fake fur, and it was vacuum sealed, packaging is 10/10 and quality is amazing, thank you!
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Reviewed in the United States on May 3, 2026
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Brian & Renee Sitko
Carnegie, US
★★★★★ 5
Love the color
Color: Red, Color: Red
Super vibrant color with minimal shedding .. it fits my steering wheel and easy to install and worth the money..
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Reviewed in the United States on May 17, 2026
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Lowell, US
★★★★★ 3
It’s ok
Color: Lavender Purple
Its ok. Not as fluffy as i think it would be. I have had it over a month or so and its starting to get even more less fluffy. The color wAs more like a faded purple
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Reviewed in the United States on May 27, 2026

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