Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
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
The 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 µS, mS and ppm scales. The meter incorporates automatic temperature compensation (ATC) to accommodate for discrepancies in temperature that would naturally occur and also features digital calibration for easy and precise calibration that will yield better results.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
4.3 ★★★★★
Based on 111 reviews
Sort
Product Reviews
★★★★★ 5
So easy to file a claim
Thankfully I purchased insurance on a treadmill I purchased because I ended up having to file a claim and Asurion made the process so incredibly easy. I will absolutely use their services again in the future. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Quick resolving of issue
Thank you very much for actual resolving of issue! Received gift card with full amount after contacted customer service.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
★★★★★ 5
Worth the price
Very pleased- I just chatted in what I needed and the rep was very helpful in getting a refund for my equipment that failed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Relief and Security!
I have Asurion on a few of my things at my home. I have never had to use it so far. I at least know it’s there if I need to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
★★★★★ 5
Get the insurance
That the insurance is worth the extra money’s
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
recommand products
Bontrager Aeolus RSL 37 Carbon Tubeless 700c Wheelset
1008.50
【新品】東方Project ゆるっとトートバッグ ゆるっと地霊殿 / アキバホビー／株式会社イザナギ 発売日:2025年07月頃
33.95
Trek Checkpoint SL 5 Gravel Bike - 2021, 52cm
996.48
Battery Sony Np-Fv70 (Hahnel Brand Replacement)
54.95
Specialized Stumpjumper EVO Alloy Mountain Bike - 2022, S3
1599.99