Does the HI701 come with reagent?

Yes, but not very many pillows. The pillows are also over sized and less convenient to use then Hach. The Hach reagent works with this unit just make sure it's the 10ml pillows.

How many ppm of free chlorine will this read up too

Range 0.00ppm - 2.50 PPM Thank you:)

Do you have to calibrate it before every single use or does one calibaration lasts a while ?

You can buy a calibration kit for this. It's cheap. It has a clear vial and a pink vial that should read 1.00 and I check it every few months to make sure its still close. Same steps as a normal residual check The steps for every time you check the chlorine residual include a 'calibration' to the clear water before adding the packet. Step one turn it on, shows C-1 Step two fill the vial with water and put it in and press the button Step three, after it says C-2, take the vial out and add the packet. Step four put it back it after a shake and press the button. Done.

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Hanna Instruments HI701 Checker HC Handheld Color Meter for Free Chlorine

Hanna Instruments HI701 Checker HC Handheld Color Meter for Free Chlorine

Product ID: 733536588

Details

Brand
Hanna
Manufacturer
Hanna
Ph Range
0.00-2.50
Recommended Uses For Product
Water Quality
Unit Count
1.0 Count

📏0.01 ppm resolution

📱One-button operation

🔋Auto shut-off extends battery life

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Description

💧 Stay ahead of water quality—because precision is power!

CLEAR INSTANT READINGS - Large LCD screen ensures easy-to-read results even in busy or low-light environments.
PRECISION AT YOUR FINGERTIPS - Measures free chlorine with ±0.03 ppm accuracy for reliable water quality control.
EFFORTLESS ONE BUTTON TESTING - Simplify your workflow with intuitive, single-button operation—results in seconds.
LONG LASTING POWER EFFICIENCY - Automatic shut-off conserves battery life, keeping your device ready when you are.
TRUSTED EPA APPROVED CHEMISTRY - Uses diethyl-p-phenylaminamine (DPD) reagent for industry-standard chlorine detection.

The Hanna Instruments HI701 Checker HC is a compact, handheld color meter designed for fast, accurate free chlorine measurement in water. Combining EPA-approved DPD chemistry with a user-friendly one-button interface and a large LCD display, it delivers lab-grade precision (±0.03 ppm) at a fraction of the cost of professional equipment. Its auto-shutoff feature maximizes battery life, making it ideal for professionals managing water quality in pools, drinking water, and wastewater applications.

Specifications

ASIN	B003IKNJMA
Amazon Bestseller	#106,389 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #207 in Lab pH Meters
Brand Name	Hanna Instruments
Customer Reviews	4.4 4.4 out of 5 stars (219)
Global Trade Identification Number	00611517433696, 04016138661415
Item Weight	0.3 Kilograms
Manufacturer	Hanna Instruments
Material Type	ABS Plastic
Model Number	HI-701
Part Number	HI 701
Recommended Uses For Product	Water Quality, Environmental Testing, Pools & Spas
Sterility Rating	0.00-2.50
UPC	611517433696
Unit Count	1.0 Count

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