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 Colorimeter for Free Chlorine

Hanna Instruments HI701 Checker HC Handheld Colorimeter for Free Chlorine

Product ID: 10382737

Details

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

🎯EPA-approved DPD method for precision

📱Single-button operation for effortless use

🔋Auto shut-off extends battery life

Description

🎯 Master water quality with pinpoint accuracy—because precision is power.

SMART POWER MANAGEMENT - Auto shut-off feature maximizes battery life so you’re always ready when it counts.
PRECISION YOU CAN TRUST - Utilizes EPA-approved DPD method for ultra-accurate free chlorine measurement, outperforming chemical test kits.
COMPACT DURABLE DESIGN - Lightweight ABS plastic body makes it portable and rugged enough for field and lab use.
CLEAR READINGS EVERY TIME - Large LCD screen ensures easy readability even in challenging environments, reducing user error.
EFFORTLESS ONE TOUCH TESTING - Single-button operation streamlines your workflow—no complicated steps, just instant results.

The Hanna Instruments HI701 Checker HC is a handheld colorimeter designed for precise free chlorine testing using the EPA-approved DPD method. It features a large LCD screen, single-button operation, and an auto shut-off function to extend battery life. Lightweight and durable, it’s ideal for water quality monitoring in pools, spas, and environmental testing, offering lab-grade accuracy at a fraction of the cost.

Specifications

ASIN	B003IKNJMA
Best Sellers Rank	#54,110 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Lab Colorimeters
Brand	Hanna Instruments
Brand Name	Hanna Instruments
Customer Reviews	4.4 out of 5 stars 230 Reviews
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
Ph Range	0.00-2.50
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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