Pardon my ignorance but after you get the reading what do you compare the number to? I didn't receive any chart.

You do not compare it to anything the number is the amount of electro conductivity in your water(ppm of dissolved solvent witch are mostly minerals)Pure water that reeds 0 ppm does not conduct electricity. If you want clean drinking water try to filter it to were it is around 50 ppm that way you still get some minerals witch your body needs. If you are using it for mixing fertilizer for your plants you should not exceed 600 ppm when they are small and do not exceed 1500 ppm when plant are larger with more roots.

The instructions say it's warranty is for 3 years. It's odd that there is no company name as to who it would be returned to. Who is the manufacturer?

Hi LmariThe brand name iSpring is stamped on the TDS meter itself. We are currently updating the manual for the TDS meter due to the typo in the warranty. This meter has a 1 year warranty and not 3. If you are experiencing any problems with this product please contact us at (678)261-7611.ThanksiSpring

Do it need a calibration solution?

Sure it works right out of the box, but i it accurate? The only way to know is with a calibration solution. Most meters are quite close when they are new, but as time goes by, the accuracy can decline. If you want accurate readings, get some calibration solution.

Essential minerals are also picked up by TDS meters and that is not an effective to way to check or test water quality. True?

True. TDC=S meters usually measure the EC of particles to indicate TDS (Total Dissolved Solids) Dissolved solids can be good or bad.

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iSpring TDS 3-Button Digital Water Quality Test Meter with Temperature Test Function

iSpring TDS 3-Button Digital Water Quality Test Meter with Temperature Test Function

Product ID: 9456116

Details

Age Range (Description)
Adult
Brand
iSpring
Color
Grey
Display Type
Digital
Included Components
1 TDS meter
Model Name
TDS 3-Button

💧Accurate TDS reading in ppm

🌡️Built-in digital temperature sensor

🛡️Durable, portable with protective case

Description

💧 Know your water, own your health — precision testing made effortless!

DUAL FUNCTION TESTING - Measure both Total Dissolved Solids and temperature with one sleek, easy-to-use device.
PORTABLE RUGGED DESIGN - Lightweight 1.76 oz body with a protective carrying case and belt clip for on-the-go professionals.
SMART AUTO OFF POWER SAVER - Conserves battery life by shutting off after 10 minutes of inactivity—ready when you are.
INSTANT WATER PURITY INSIGHT - Get precise TDS levels in just seconds to ensure your water is truly clean and safe.
TRUSTED BY PROS HOMEOWNERS - Join thousands who rely on iSpring’s industry-leading accuracy and lifetime customer support.

The iSpring TDS 3-Button Digital Water Quality Test Meter is a compact, highly accurate handheld device designed to measure Total Dissolved Solids (TDS) and water temperature. Ideal for professionals and home users alike, it provides instant ppm readings to monitor water purity for drinking, filtration systems, aquariums, hydroponics, and more. Featuring advanced microprocessor technology, a clear digital display, auto-off function, and a durable carrying case, it ensures reliable, on-the-go water quality testing backed by lifetime customer support.

Specifications

ASIN	B00IDBZ1A2
Additional Features	High Accuracy
Age Range Description	Adult
Best Sellers Rank	#59,114 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #51 in Lab pH Meters
Brand Name	iSpring
Color	Grey
Customer Reviews	4.1 4.1 out of 5 stars (932)
Display Type	Digital
Global Trade Identification Number	00662425070015
Included Components	1 TDS meter
Indoor Outdoor Usage	Indoor, Outdoor
Item Length	7 inches
Item Type Name	High Accuracy TDS Meter with Temperature Function
Item Weight	1.76 ounces
Manufacturer	iSpring
Model	TDS3-FBAK
Model Name	TDS 3-Button Digital Water Quality Tester
Outer Material	Plastic
Part Number	TDS
Product Care Instructions	Hand Wash Only
Response Time	2 minutes
Reusability	Reusable
Style Name	Contemporary
UPC	662425070015
Unit Count	1 Count
Warranty Description	30-Day Money Back Guarantee. Extended Warranty upon Registration and Lifetime CS and Tech Support from iSpring in Atlanta, GA.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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