HM Digital EC/TDS HydroTester Pen
SKU: 90456113863

HM Digital EC/TDS HydroTester Pen

$49.49 $54.99
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

HM Digital EC/TDS HydroTester PenHm Digital released the COM 80 as an affordable, but reliable, EC TDS meter ideal for testing in situations like hydroponics, aquaponics, gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. This handheld pen measures both electrical conductivity (EC) and total dissolved solids (TDS) and is a great option for hydroponic nutrient testing. Features Four Scales EC: S, mS and TDS: ppm, ppt ATC (Automatic Temperature

Hm Digital released the COM-80 as an affordable, but reliable, EC/TDS meter  ideal for testing in situations like hydroponics, aquaponics, gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. This handheld pen measures both electrical conductivity (EC) and total dissolved solids (TDS) and is a great option for hydroponic nutrient testing.

Features
- Four Scales-  EC: µS, mS and TDS: ppm, ppt
- ATC (Automatic Temperature Compensation)
- Water Resistant
- Range: 0-9990 µS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt
- Easy digital calibration
- Saves battery with an auto-off function
- Data-hold function
- Large LCD screen shows temp too
- Factory calibrated 
- Includes cap and batteries

EC Range 0-9990 µS; 0-9.9 mS
TDS Range 0-5000 ppm (mg/L); 0-5.0 ppt
Temp Range
 1-80°C/33-176°F
Resolution 1 µS/ppm; 0.1 mS/ppt
Temp Resolution 0.1°C/F 
Accuracy +/- 2% 
EC to TDS Conversion Factor NaCl (avg of 0.5) 
Calibration
 Digital, push button
Dimensions 6.0 x 1.3 x 0.7 inches


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: 90456113863

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4.0 ★★★★★
Based on 1314 reviews
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Scotty
Whiting, US
★★★★★ 4
Funny toys
Size: Critter Zoo, Color: 5 Different Animals
Fun toy for our 90 pound doodle, but don’t expect them to last forever. Goofy eyes and features make it a fun toy. If a big dog sits down with it, they will be able to pull it apart. The bird lasted about 5 days with solid supervision. Let’s be honest, no toy is indestructible. The price and number of funny creatures makes this a good buy in my opinion.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
K
Verified Purchase
Kurl Ann Roary
New York, US
★★★★★ 5
Great buy for my little mini pinscher!
Size: Critter Zoo, Color: 5 Different Animals
Izzy loves them! Well made and so cute!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
S
Verified Purchase
Stephanie Mueller
Lake Worth, US
★★★★★ 1
No. Just no.
Size: Critter Zoo, Color: 5 Different Animals, Size: Critter Zoo, Color: 5 Different Animals
From the Amazon listing, Nocciola promises “Durability Guaranteed” and “Expert Craftsmanship,” boasting multi‑layer composite fabric, chew‑resistant construction, and meticulous stitching. Yeah… about that. Within the first ten minutes, the giraffe’s squeaker gave up the ghost. By the thirty‑minute mark, one of our puppies had already liberated one of its appendages and was preparing to eat it. When I took the giraffe away, he immediately redirected his enthusiasm toward the mallard and removed a wing. Our other puppy went straight for the Red‑Headed Chicken’s throat. She succeeded. She was also making impressive progress on opening the back of its neck. At that point, all three toys had to be confiscated, and the remaining two are still sitting in the box untouched because I value my dogs’ digestive tracts. To be fair, the toys sound fantastic—literally. My puppies adored the squeaks, honks, and crinkles. They had a blast tossing them around and sprinting through the house. But the moment they settled down for a chew session, it was game over. I’m genuinely disappointed that these toys require constant supervision to prevent accidental ingestion, and that my dogs can’t safely enjoy them the way they’re meant to. If your dogs chew even a little, these toys are not worth the investment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
C
Verified Purchase
Chrisylis
Lake Worth, US
★★★★★ 5
Good toys
Size: Critter Zoo, Color: 5 Different Animals
As expected. My dog loves them and they seem to be very durable.
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Reviewed in the United States on May 16, 2026
M
Verified Purchase
Mr Phish
Lexington, US
★★★★★ 3
Dog Toy
Size: Critter Zoo, Color: 5 Different Animals
These things were good for the first 45 minutes than my dog ripped it apart. Buy the variety pack it helps to keep the dog happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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