My two tds meters read 150ppm and 160ppm in the solution. what am i doing wrong.

The reason for the discrepancy is that the TDS meters are not calibrated. You need to re-calibrate them following the manufacturers instructions.

Hm Digital 342ppm Tds Calibration Solution A K A Water

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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₹ 3080

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Description

💧 Stay ahead of water quality with precision calibration that professionals trust!

TRUSTED BY PROS - Used by water quality experts and even window cleaners who demand consistent, accurate results.
ECO SMART PACKAGING - Durable, recyclable HDPE plastic bottle designed for repeated use and minimal waste.
PRECISION PERFECTED - Calibrate your TDS meter with exact 342 PPM NaCl solution for reliable water quality readings every time.
LIGHTWEIGHT PORTABLE - Compact 90 ml HDPE bottle fits effortlessly in your toolkit or lab bag for on-the-go recalibration.
LONG LASTING FRESHNESS - Foam-lined sealed cap ensures solution integrity, so your calibration stays accurate session after session.

The HM Digital 342ppm TDS Calibration Solution is a 90 ml NaCl-based liquid designed to recalibrate HM Digital TDS meters for precise water quality testing. Packaged in a lightweight, foam-sealed HDPE bottle, it ensures long-lasting accuracy and portability, making it an essential tool for professionals seeking reliable, repeatable measurements.

Specifications

ASIN	B001VE99X8
Best Sellers Rank	77,412 in Garden ( See Top 100 in Garden ) 218 in Pool & Hot Tub Testers
Brand	HM Digital
Container Type	Bottle
Country Of Origin	USA
Customer Reviews	4.4 out of 5 stars 840 Reviews
Global Trade Identification Number	00891144000014
Item Form	Liquid
Item Weight	100 Grams
Item form	Liquid
Item volume	90 Millilitres
Item weight	100 Grams
Manufacturer	HM Digital
Manufacturer Part Number	C342
Model Number	C-342
Package information	Bottle
UPC	891144000014
Volume	90 Millilitres

Reviews

J**O

Small Bottle, Use Again

I calibrated my TDS meter just fine. I used a better air tight jar and poured it all into it, that way I can use it multiple times. I will buy again. Delivery good.

16.04.2025

D**S

Very useful

Very useful for a window cleaner

29.10.2019

R**N

Calibration solution.

I have had a TDS pen for several years until recently it started to play up. so a battery change and a rest was well over due. The solution was a quick and easy method and it worked well.

19.07.2024

C**Y

Prompt as described

Great

7.12.2020

M**U

Accuracy

Excellent product!

5.12.2022

B**R

Gute qualitet und Rechnung war auch sofort da Danke

23.02.2026

C**E

If you need t d s or e c calibration , this one is for you

Good size works well definitely by again

9.05.2026

D**C

Produit de Calibration.

Excellent produit 👍

1.04.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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