How many times can the tester be used?

FROM HM DIGITAL: Unlimited. Eventually, you will need new batteries, but the TDS-EZ can be used an unlimited number of times.

What temperature was this device calibrated at? I noticed that readings vary with temperature. How do I get a consistent reading?

FROM HM DIGITAL: The TDS-EZ was calibrated at 25 degrees Celsius (77F), but more importantly, the TDS-EZ is one of HM Digital's most basic meters and does not have Automatic Temperature Compensation (ATC). Therefore, since it does not have ATC, you will see discrepancies when testing hotter or colder from the baseline of 25C/77F.If your water is typically around this temperature, it won't be much of a difference, but if +/-10 degrees or more from 25C/77F, it's a good idea to get a meter with ATC, such as HM Digital's TDS-3, TDS-4, AP-1, COM-80 or COM-100.

can the battery be replaced? if so, what battery does it take?

Yes, the batteries can be replaced. It takes 2 LR44G "button cell" batteries like the batteries that go in watches, ect. The unit has an auto shut-off so the batteries should last a good long time.

Can this be used to check for collodial silver in the 10 ppm range in a solution of distilled water?

No it can't. It doesn't detect specific elements or chemicals. Though the way calcium, lead, and collodial silver may dissolve would effect the numerical value of TDS and if you knew that in 100 ml of 45 deg Celsius water would only hold X# ppm of an element you might be able to figure it out based on the numerical value shown.

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HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy,Purple

Product ID: 1092617

Details

Brand
HM Digital
Capacity
9999
Color
Purple
Item dimensions L x W x H
1 x 1.25 x 6.1
Material
Plastic

📏0-9990 ppm range

📟1 ppm resolution

🔋1000 hrs battery life

₨582

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Description

💧 Stay ahead of water quality—because pure water is the new luxury.

SMART AUTO OFF - Saves battery life by shutting off after 10 minutes of inactivity—efficiency meets convenience.
DURABLE STYLISH - Vibrant translucent purple housing built tough for everyday use—stand out while staying precise.
LONG LASTING POWER - Up to 1000 hours of continuous use with included button cell batteries—no interruptions.
USER FRIENDLY DISPLAY - Large, easy-to-read LCD screen with hold function to capture and record measurements effortlessly.
PRECISION AT YOUR FINGERTIPS - Instantly measure water purity with 1 ppm resolution for ultra-accurate readings.

The HM Digital TDS-EZ is a compact, highly accurate water quality tester with a broad 0-9990 ppm measurement range and 1 ppm resolution. Featuring advanced microprocessor technology, a large LCD display, and a battery-saving auto-off function, it delivers reliable readings for tap water, filtration systems, hydroponics, and more. Its durable translucent purple design and long battery life make it an essential tool for professionals and enthusiasts who demand precision and style.

Specifications

ASIN	B002C0A7ZY
Brand	HM Digital
Brand Name	HM Digital
Capacity	9999 picoliters
Color	Purple
Customer Reviews	4.4 out of 5 stars 7,615 Reviews
Global Trade Identification Number	00891144000168
Included Components	meter
Item Dimensions	1 x 1.25 x 6.1 inches
Item Type Name	meter
Item dimensions L x W x H	1 x 1.25 x 6.1 inches
Manufacturer	HM Digital, Inc.
Manufacturer Part Number	TDS-EZ
Material	Plastic
Material Type	Plastic
Model Number	TDS-EZ
Number of Items	1
Size	0-9990 ppm. Measurement Range
UPC	712641079917 891144000168
Unit Count	1.0 Count

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₨582

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

2 days ago

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The delivery time was excellent, and the packaging was secure.

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