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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Description

💧 Stay Ahead of the Curve with Crystal Clear Water Quality Insights!

DURABLE STYLISH - Stand out with a fun, translucent blue housing that’s both strong and eye-catching.
USER FRIENDLY DESIGN - Enjoy a large, easy-to-read LCD screen for effortless monitoring.
PRECISION MEASUREMENT - Experience unparalleled accuracy with a 0-9990 ppm measurement range.
ECO CONSCIOUS AUTO OFF - Save battery life with an automatic shut-off feature after 10 minutes of inactivity.
CONVENIENT HOLD FUNCTION - Easily save and record your measurements with the handy hold function.

The HM Digital TDS-EZ Water Quality TDS Tester is an essential tool for anyone serious about water quality. With a measurement range of 0-9990 ppm and a resolution of 1 ppm, this tester ensures precise readings. Its user-friendly design features a large LCD screen and a hold function for easy recording. Plus, the eco-conscious auto-off feature conserves battery life, making it a smart choice for the environmentally aware consumer. Durable and stylish, this tester is perfect for both home and professional use.

Specifications

Colour	Purple
Material	Metal
Capacity	9999 Picoliters
Brand	HM Digital
Item dimensions L x W x H	25 x 32 x 155 Millimeters
Item Weight	2 Ounces
Global Trade Identification Number	00891144000168
Manufacturer	HM Digital, Inc.
Size	0-9990 ppm. Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy
UPC	712641079917 891144000168
Model number	TDS-EZ
Number of Memory Sticks	1
Item Weight	56.6 g
Product Dimensions	2.54 x 3.18 x 15.49 cm; 56.7 g
Batteries	2 LR44 batteries required. (included)
Item model number	TDS-EZ
Item Height	6.1 Inches
Item Width	1.25 Inches
Compatible Device	TDSEZ, TDS-EZ
Average Battery Life (in hours)	1000 Hours
Are batteries included?	Yes
Lithium Battery Packaging	Batteries packed with equipment

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