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HACH

Q: Okay, what am I doing wrong. The water was blue, not pink when I added the microspoon of chemical, no drops added.

It means your water is soft already. If it was pink, then however many drops you add to turn it blue, thats how many grains hard your water is. Since you did not have to add any drops that means your water is 0 grains hard.

Q: What is the hardness range for this test kit? Thanks

You can always dilute your sample to extend the range. Dilute with soft water (distilled, clean rain water, or previously softened water). Just check that the soft water tests for zero hardness before using it. 1:1 dilution would double your range. 1:9 would extend the range by a factor of 10. A cheap drugstore syringe could be used for dilutions if you don't want to eyeball it.

Q: Does this kit come with the test tube and mixing bottle like the one from Hach?

Hach's part number 145300 does come with the measuring tube PN43800 and Glass Bottle PN 43900

Q: Why would the color of soft water turn blue as soon as the indicator is added to the sample, without any additionof the titrant?

This happens normally, if the water is soft (zero grains of harness). The grains of hardness is the number of drops of titrant you have to add to get the water to turn blue. If you do not have to add any drops of titrant, then you have zero grains!

Product ID: 11931791

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💧Measures hardness 1-30 gpg

📏Approx. 100 tests per kit

🧪Includes 2 precise reagents

Frequently Bought Together

Hach Total Hardness Test Kit, Model 5-B, Water Analysis Kit for Drop Count Titration, with 2 Reagents, Measuring Tube, Square Bottle & Measuring Scoop, 145300

HoneForest Water Quality Tester, Accurate and Reliable, TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.

Description

💧 Stay ahead with precision water hardness testing that professionals trust!

FIELD LAB READY - Portable and easy-to-use for reliable hardness testing anywhere, anytime
COMPLETE TESTING KIT - Includes reagents, measuring tube, square bottle & scoop for all-in-one convenience
GENEROUS TEST CAPACITY - Up to 100 tests per kit keeps you prepared for ongoing analysis
TRUSTED BY INDUSTRY PROS - Preferred by water treatment, food & beverage, textile, and manufacturing experts
PRECISION DROP COUNT TITRATION - Accurately measures water hardness as CaCO₃ with a simple drop method

The HACHTotal Hardness Test Kit Model 5-B offers a reliable, drop-count titration method to measure total water hardness as CaCO₃ within a 1-30 gpg range. Equipped with two reagents and all necessary tools, it supports approximately 100 tests, making it ideal for both field and laboratory use across multiple industries.

Have a Question? See What Others Asked

Okay, what am I doing wrong. The water was blue, not pink when I added the microspoon of chemical, no drops added.

What is the hardness range for this test kit? Thanks

Does this kit come with the test tube and mixing bottle like the one from Hach?

Why would the color of soft water turn blue as soon as the indicator is added to the sample, without any additionof the titrant?

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