Hach Free & Total Chlorine Test Strips

Hach's water quality test strips are ideal for performing semi-quantitative spot-checks or field tests.

Features

  • Quickly take water quality measurements
  • Wide variety and range of parameters
  • Convenient for field use
Starting At $31.69
Stock Drop Ships From Manufacturer  
Hach's water quality test strips are ideal for performing semi-quantitative spot-checks or field tests. They are manufactured with a unique reagent pad at the tip, using proven chemistries based on standard reference methods. Simply dip a strip into the sample, wait for color to develop, and compare color on the reagent pad to the color chart on the bottle. Test strips are available for a wide selection of parameters, with new strips being added regularly.
Questions & Answers
what are the reagents MTK, TMK, and TMB and how do they differ from DPD?
MTK and TMK both stand for Thio-Michler's ketone (Michler's thioketone) and react with certain metals, including gold, silver, mercury and palladium. This reagent can be used for residual chlorine studies. TMB is tetramethylbenzidine and changes color when it comes into contact with ethyl acetate (turns blue/green) or chlorine (turns yellow). DPD is used to determine chlorine concentration by the vividness of the color produced. Depending on the specific reagent model, it can measure free and total chlorine concentrations from 0.02 -10 mg/L. Manganese can interfere with DPD reagents, but not with TMK/MTK reagents.
Can the Hach Chlorine test strips measure chlorine in PPM?
The free & total chlorine test strips mg/L unless otherwise noted. Note: ppb = µg/L; ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm.  
Did you find what you were looking for?

Select Options

  Products 0 Item Selected
Image
Part #
Description
Price
Stock
Quantity
Hach Free & Total Chlorine Test Strips
2745050
Free & total chlorine test strips, 0-10 mg/L, 50 tests
Your Price $31.69
Drop Ships From Manufacturer  
Hach Free & Total Chlorine Test Strips
2793944
Free & total chlorine test strips, 0-10 mg/L, 250 tests, individually wrapped
$340.00
Drop Ships From Manufacturer  

In The News

Three Decades of Research at Acton Lake

A multi-disciplinary team at Miami University, Ohio, has been studying the environmental change at Acton Lake for over three decades. Using three different NexSens buoys over this time, the team has an incredible archive of data that is helping build a picture of Acton’s past, present, and future. Until recently, a NexSens CB-50 buoy was used alongside other environmental monitoring at Acton Lake. In May 2025, the Miami team deployed a new XB-200 buoy , future-proofing their ongoing monitoring using real-time buoy systems. Acton Lake, a small hypereutrophic reservoir in southwest Ohio, covers 2.4km² and has a maximum depth of about 8m. The dam was built in 1956, and the lake has a large agricultural watershed.

Read More

Source Water Monitoring in Albany, New York: Tracing Water Quality throughout Tributaries

Thousands of US cities pull their drinking water from natural source waters like reservoirs, rivers, and streams, making overall watershed health a key consideration for water providers. In Albany, New York, the Albany Department of Water and Water Supply delivers drinking water to over 100,000 residents as well as monitors and manages the larger drinking water supply watershed. Hannah Doherty, Environmental Specialist at the Albany Department of Water and Water Supply , spends her days working with a small team to monitor the drinking supply and the connected water bodies. Doherty explains, “We’re the first to encounter the water that ends up being the drinking water.

Read More

Wildfire Prevention in the Sierra Nevada Region with the Yuba Watershed Institute

Though recent wildfires have sparked new conversations about wildfire management and response, groups like the Yuba Watershed Institute have been monitoring the forests and water resources of the Sierra Nevada region for decades, managing approximately 5,000 acres of land with the Bureau of Land Management (BLM) and about 7,000 acres in private land partnerships. The goal of the Institute is to work with local communities and land agencies to improve watershed and forestry management through informed practices and public outreach. The goals of the Yuba Watershed Institute are three-fold: Improve the ability of fire suppression agencies like the California Department of Forestry and Fire Protection ( CAL FIRE ) and the US Forest Service.

Read More
×
Multiple Products

have been added to your cart

There are items in your cart.

Cart Subtotal: $xxx.xx

Go to Checkout