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 Meter, Purple, 0-9990 ppm. Measurement Range

Product ID: 48734853

Details

Brand
HM Digital
Capacity
9999
Colour
Blue
Item dimensions L x W x H
25 x 32 x 155
Material
Plastic

📊0-9990 ppm range

📱Large LCD display

🔋1000 hrs battery life

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Description

💧 Know your water, own your wellness — instantly!

STAY POWERED LONGER - Impressive 1000-hour battery life with auto-off to maximize usage and conserve energy.
BUILT TO LAST IMPRESS - Durable translucent blue housing combines style with rugged reliability.
EFFORTLESS DATA CAPTURE - Hold function freezes readings for easy recording and analysis on the go.
PRECISION AT YOUR FINGERTIPS - Advanced microprocessor tech delivers accurate TDS readings up to 9990 ppm.
INSTANT WATER QUALITY INSIGHT - Quick, one-button measurement ideal for tap water, RO filters, hydroponics, and more.

The HM Digital TDS-EZ Meter is a sleek, durable, and highly accurate water quality tester with a broad 0-9990 ppm measurement range. Featuring advanced microprocessor technology, a large LCD screen, and a hold function, it offers professional-grade precision and convenience. Its long-lasting battery and auto-off function ensure reliability for everyday use in water filtration, hydroponics, aquariums, and more — making it the essential tool for anyone serious about water purity.

Specifications

ASIN	B002C0A7ZY
Best Sellers Rank	62,238 in Garden ( See Top 100 in Garden ) 11 in Water Garden & Pond Test Kits
Brand Name	HM Digital
Capacity	9999 Picoliters
Colour	Blue
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (7,375)
Global Trade Identification Number	00891144000168
Included Components	meter
Item Dimensions	25 x 32 x 155 millimetres
Item Type Name	meter
Manufacturer	HM Digital, Inc.
Manufacturer Part Number	TDS-EZ
Material Type	Plastic
Model Number	TDS-EZ
Size	0-9990 ppm. Measurement Range
UPC	712641079917 891144000168
Unit Count	1.0 count

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