Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 19 - Jun 24
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Description
HM Digital pH/TDS/EC/Temp Meter COM-300The HM Digital COM 300 is an advanced Waterproof pH TDS EC Temp 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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 1233 reviews
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Product Reviews
★★★★★ 5
Me gustaron
Size: 9.5 Wide, Color: Black
Llego exactamente la talla que pedí, son como se ven en la foto!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
Comfortable dress shoe.
Size: 7, Color: Brown Napa Leather
Finally a comfortable dress shoe. It's both comfortable to walk in and looks and wears like a more traditional dress shoes for the office.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Beautiful
Size: 54 mm, Color: Brown/Grey/Brown Gradient
Beautiful. I love them so much. I wear them all of the time.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Cumplió mis expectativas
Size: 54 mm, Color: Brown/Grey/Brown Gradient
Hermosas y de buena calidad
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Reviewed in the United States on December 26, 2025
★★★★★ 2
Missing “C’s” on temple
Size: One Size, Color: Cd472 Black Grey Gradient
Material felt cheap and were missing the “C’s” on both sides of the temples.
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Reviewed in the United States on May 26, 2025
