is this product interchangeable with Hach 2105569?

I don't believe so. The Hach 2105569 takes a 10ml sample and is best used in a Hach machine. The Barnant 1407799 takes a 5ml sample and is used in the Hach visual measurement kit. I use a Hach visual kit with the Barnant 1407799.

Can these reagent pillows be used in another colorinator that is not the Hach brand? I have a Hanna free-chlorine chlorinator coming.

It could be considered but we cannot confirm they will give the correct result. If you want to try it, it would be best to do so with a known solution of chlorine or side by side comparing results to the proper manufacturers reagent.

what is the difference between "free" and "total" chlorine?

Free chlorine is the amount of non-reacted available chlorine in a system. Total Chlorine is the amount of compost chlorine in a system including free chlorine, and reacted chlorine like chloramines.

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Hach DPD Free Chlorine Reagent Powder Pillows, 5 mL, Pack of 100, 1407799 | Range 3.5 mg/L Cl₂, USEPA Accepted Method 8021, Drinking Water & Wastewater Analysis, For Use with Colorimeter

Hach DPD Free Chlorine Reagent Powder Pillows, 5 mL, Pack of 100, 1407799 | Range 3.5 mg/L Cl₂, USEPA Accepted Method 8021, Drinking Water & Wastewater Analysis, For Use with Colorimeter

Product ID: 23993764

Details

Brand
HACH
Item Form
Powder
Item Weight
0.02 kg
Package Size Name
100-Pack
Product Benefits
Maintains

📏3.5 mg/L Cl₂ testing range

🔬Compatible with Hach colorimeters

🧪Pre-measured 5 mL powder pillows

8200 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay ahead in water quality with precision-packed chlorine testing!

ROUTINE READY - Convenient 100-pack designed for frequent, small-scale water quality monitoring
EFFORTLESS ACCURACY - Pre-measured powder pillows ensure consistent 3.5 mg/L chlorine detection every time
SEAMLESS INTEGRATION - Optimized for Hach colorimeters and spectrophotometers for flawless testing
PRECISION YOU CAN TRUST - USEPA certified for reliable chlorine analysis in drinking & wastewater
VERSATILITY AT ITS BEST - Perfect for groundwater, municipal, and surface water testing—stay ahead in water safety

Hach DPD Free Chlorine Reagent Powder Pillows (5 mL, Pack of 100) deliver EPA-certified, precise chlorine measurement from 0 to 3.5 mg/L. Designed for seamless use with Hach colorimeters, these pre-measured powder pillows simplify routine water quality testing across groundwater, municipal, and surface water applications—trusted by professionals for over 20 years.

Specifications

ASIN	B00N3YJBHS
Best Sellers Rank	#38,342 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #41 in Analytical Reagents
Brand Name	HACH
Customer Reviews	4.6 4.6 out of 5 stars (90)
Item Form	Powder
Item Weight	0.02 kg
Manufacturer	HACH COMPANY
Manufacturer Part Number	1407799
Model Number	1407799
Number of Items	1
Package Size Name	100-Pack
Product Benefits	Maintains Clean Sanitized Water
Unit Count	1 Count

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8200 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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