SKU: 44355740267

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

Sale price$75.46 Regular price$83.84
Save 10%

Pay in installments of $20.96 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 29 - Nov 3

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
V
Verified Purchase
Verucat
Chelsea, US
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
J
Verified Purchase
JJ Fording
Boise, US
★★★★★ 5
Balls
Size: Medium
My dog loves chasing these balls. He seems to love the squeak! They fit the chuck it stick perfectly, and are great replacements for the originals that came with the stick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
S
Verified Purchase
Steve just Steve
Draper, US
★★★★★ 5
Nice set of balls
Size: Medium
The squeaker quickly became my dog’s favorite ball and has replaced the fuzzy tennis balls. My dog is a nonstop fetcher and these chuck it balls are durable and fun.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
C
Verified Purchase
Claudia Garfield
Grantham, US
★★★★★ 5
Perfect ball
Size: Medium
Our dog loves these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
T
Verified Purchase
Timothy john starkweather
Whiting, US
★★★★★ 4
Soild
Size: Medium
The orange and blue ball is perfect. Once start taken because the because the blue noisy one was a little to easy for my dog to start ripping pieces off. Will say most toys do not survive his chewing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026

recommand products