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

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

Marsoni

M251S

$163.15

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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Beautiful watch that looks far more expensive than it is. The rose gold finish is very attractive, and the black faux leather band goes well with it. It tells time accurately. The only caveat is the date window which is so tiny that it's very difficult to read when not under direct light. I am very pleased with my purchase.

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Reviewed in the United States on April 27, 2025

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Fred Stoltzfus

Louisville, US

★★★★★ 5

Nice watch!

Color: black/black

This watch was very easy to set and keeps time very well. It looks great with a professional appearance it seems to be well built and the warranty is good. The glass on the first one I got cracked after two months and they are sending me a new one!

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Reviewed in the United States on February 28, 2026

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Mindycochran

Chelsea, US

★★★★★ 5

Great value!

Color: black/black

Great value for the money. My teenage son started a watch collection, and this was the perfect addition. It looks like it cost a lot more than it really did.

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Reviewed in the United States on April 26, 2026

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Angela

Chelsea, US

★★★★★ 5

Beautiful watch

Color: Brown/Black/Blue

I bought this for my dad and he absolutely loves it. He says it keeps perfect time and tells me how much he loves it every time I see him.

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Reviewed in the United States on March 31, 2026

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