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.

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.

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

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!

Hach Total Hardness Test Kit Model 5 B Drop Count

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Description

💧 Master water hardness like a pro—because precision is power.

BULK TESTING POWER - Includes enough reagents and materials for approximately 100 reliable tests—stay ahead without running out.
VERSATILE TRUSTED - Used by professionals across water treatment, food & beverage, textile, and manufacturing industries.
MULTILINGUAL SUPPORT - Clear instructions in English, Spanish, French, and Portuguese—ready for global use.
COMPACT COMPLETE KIT - Comes with two reagents, measuring tube, square bottle, and scoop for all-in-one field and lab testing.
PRECISION IN EVERY DROP - Accurately measures total hardness as CaCO₃ with a simple drop count titration method.

The Hach Total Hardness Test Kit Model 5-B offers a professional-grade, economical drop count titration method to measure water hardness from 1 to 30 gpg as CaCO₃. With approximately 100 tests per kit and multilingual instructions, it’s the trusted choice for accurate, on-site water hardness analysis across multiple industries.

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MX$2053

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Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration, 145300

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Common Questions