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, Range from 3.5 mg/L Cl₂, USEPA Accepted Method 8021, Drinking Water & Wastewater Analysis, for Use with Colorimeter, 1407799

Product ID: 23993764

Details

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

✅USEPA Certified Quality

📏3.5 mg/L Cl₂ Accurate Range

📦100 Pre-measured Powder Pillows

€ 65.92

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay ahead in water safety with precision you can trust!

EPA CERTIFIED PRECISION - Trust your water analysis with USEPA Method 8021 certification—accuracy that professionals demand.
READY TO USE CONVENIENCE - Pre-measured powder pillows in a 100-pack streamline routine testing—no guesswork, no mess.
OPTIMIZED CHLORINE DETECTION - Detect chlorine levels from 3.5 mg/L Cl₂ upwards, ensuring reliable monitoring for safe water standards.
SEAMLESS DEVICE COMPATIBILITY - Designed for flawless integration with Hach colorimeters and spectrophotometers for instant, precise results.
VERSATILE WATER QUALITY TESTING - Perfect for groundwater, municipal, and surface water analysis—stay ahead in environmental compliance.

Hach DPD Free Chlorine Reagent Powder Pillows offer EPA-certified, highly accurate chlorine testing in a convenient 100-pack format. Engineered for seamless use with Hach colorimeters, these pre-measured powder pillows cover a testing range starting at 3.5 mg/L Cl₂, making them ideal for professional drinking water and wastewater analysis across diverse water sources.

Specifications

ASIN	B00N3YJBHS
Best Sellers Rank	#49,353 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #59 in Analytical Reagents
Brand	HACH
Brand Name	HACH
Customer Reviews	4.6 out of 5 stars 90 Reviews
Item Form	Powder
Item Weight	0.02 Kilograms
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	1.0 Count

Reviews

R**S

Convenient

Used with Chlorine Tester for water - Convenient - Easy to use.

12.07.2021

A**R

As Advertised

I have used this product for 5+ years and am very satisfied with it.

1.01.2020

C**N

Received quickly

Use to test chlorine. Works well. Price has increased alot though.

24.01.2024

H**D

Better than we thought!

This product was actually a Hach product which is what we were looking for. It worked our perfectly for us!

6.05.2017

A**R

As expected

On time and arrived as expected.

26.06.2019

N**L

Barnant DPD Free Chlorine, Powder-5ml

Repeat purchase-suits my needs as expected! Works with Hach chlorinator measurement tools.

29.08.2017

R**A

Disappointed

I'm disappointed in the pouches because they are sealed very low on the pouch, which makes it difficult to open. It's like these are seconds. I've worked with this product for 6 months prior to buying them from Amazon. I've never had this problem before. There is a, tear here, cut on the package but it is sealed below the cut.

26.04.2020

D**N

does its job

works like it is suppose to

3.08.2018

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€ 65.92

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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