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HM Digital pH/TDS/EC/Temp Meter Model COM-300
HM Digital pH/TDS/EC/Temp Meter Model COM-300
HM Digital pH/TDS/EC/Temp Meter Model COM-300
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HM Digital pH/TDS/EC/Temp Meter Model COM-300

Marsoni M251S
Sale price$163.15
Pay 4 payments of $40.79 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
HM Digital pH/TDS/EC/Temp Meter Model COM-300The COM 300 is an advanced waterproof combo meter with superior accuracy. The meter measures four parameters: pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature. Features include 2 different conductivity conversion factors to convert EC to TDS using the 0. 5 (NaCl) or 0. 7 (442TM), as well as selectable modes for measurements in the S, mS and ppm scales. The meter incorporates automatic temperature compensation (ATC) to
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  • Fast: 2-3 business days
  • Express: 1-2 business days

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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
4.7 ★★★★★
Based on 128 reviews
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A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Favorite face wash
Size: 4.4 Fl Oz (Pack of 1)
This is one of my favorite face washes! It cleared up my skin without drying it out. I’m a big fan of this brand!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
D
Verified Purchase
Debbie Murphy
New York, US
★★★★★ 5
Eye makeup remover pads.
Very convenient for traveling! No bottles to mess with and they work very well at removing eye makeup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
S
Verified Purchase
Susan M
Massapequa, US
★★★★★ 5
Great makeup remover pads - ILove them!!
These pads are wonderful. I have used them for many years and love them. They do not irritate my skin but are strong enough to remove eye makeup with no problems.,.ever. Am so glad I found some many years ago and will us for The rest of my Life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2024
S
Verified Purchase
Susan Kozak
Belleville, US
★★★★★ 5
They also make eye makeup removal pads
Great makeup remover
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2025
J
Verified Purchase
Joy VanderKolk
Dallas, US
★★★★★ 1
Don’t buy
Didn’t take mascara off
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2025

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