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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💧 Stay ahead of water quality with precision in your palm!

SMART POWER MANAGEMENT - Auto shut-off feature maximizes battery life so you’re never caught off guard.
EPA APPROVED RELIABILITY - Trust the DPD method for industry-standard chlorine measurement.
PRECISION MEETS PORTABILITY - Get lab-grade chlorine readings on the go with 0.01 ppm accuracy.
COMPACT LIGHTWEIGHT DESIGN - Carry confidence in your pocket—only 64 grams and fits anywhere.
EFFORTLESS ONE BUTTON OPERATION - Simplify your water testing routine—just press and read.

The Hanna Instruments HI701 Checker HC is a handheld colorimeter designed for fast, accurate chlorine measurement in water. Utilizing the EPA-approved DPD method, it offers 0.01 ppm resolution within a 0.00 to 2.50 ppm range. Featuring a large LCD screen, one-button operation, and an auto shut-off to conserve battery, this compact device bridges the gap between chemical test kits and costly professional equipment, making it ideal for professionals monitoring water quality in pools, drinking water, and waste systems.

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Manufacturer	Hanna Instruments
Part number	HI-701
Item Weight	300 g
Product Dimensions	127 x 127 x 127 cm; 300 g
Batteries	2 A batteries required.
Is Discontinued By Manufacturer	No
Material	ABS Plastic
Batteries Included	No
Batteries Required?	Yes
Battery Cell Type	Alkaline
Item Dimensions LxWxH	127 x 127 x 127 cm

Hanna Instruments HI701 Checker HC Handheld Colorimeter Chlorine Free

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