K-4585 Hardness

K-4585 Hardness Titrets Kit is used to determine Hardness levels from 100-1000 ppm

Hardness Information

2-5 Business Days

Why Choose CHEMetrics Titrets?

CHEMetrics Titrets self-filing reagent ampoules make it easy to perform quick, accurate titrations of water samples. The handheld titrettor that comes with the kit allows the user to easily and reliably control the flow of the solution being measured without the need to count drops or use burets or other equipment. This unique design allows you to perform a titration anywhere and achieve reliable results for a variety of substances.

Safe and Reliable Results:

While traditional methods often require multiple steps and thorough preparation, these test kits allow you to obtain dependable results with a few simple steps. By simplifying the testing method, Tritrets test kits reduce the potential for operator error. Additionally, each of the ampoules contained in the test kits is vacuum sealed which helps eliminate the problem of obtaining inaccurate results from stale or unstable reagents. These reagents are stored right in the tip of each ampoule and sealed in glass, thereby minimizing direct contact with the chemicals.

What's Included:

     -30 self-filling Ampoules with valve assemblies

     -1 25 mL Sample Cup

     -Activator Solutions


     -Instruction Manual


Hardness is a measure of the mineral content of water. Calcium and magnesium are the most common minerals that contribute to hardness. Hard water causes scaling in boilers and other industrial equipment, and diminishes the effectiveness of soaps and detergents. The total hardness method is applicable to drinking, surface, boiler, and brine waters.

The K-4502 Titrets kid uses the EDTA method. The EDTA titrant is employed in alkaline solution with a calmagite indicator. This method determines the combined calcium and magnesium concentration of a sample. If no magnesium is present, the endpoint of the titration normally appears sluggish. Results are expressed as ppm (mg/L) CaCO3.


How to Use:

Note: Images used in the following table show a total hardness and colors may differ from the ones shown. Read written instructions to know what color changes to expect from your substance.

1. Fill the sample cup to the 15 mL mark with the sample to be tested. 2. Add 6 drops of the Activator Solution. Stir to mix the contents of the cup. 
3. Snap the tip of the ampoule at the black snap ring. 4. Lift the control bar and insert the Titret assembly into the Titrettor.
5. Hold the Titrettor with the sample pipe in the sample. Press the control bar firmly, but briefly, to pull in a small amount of sample. The contents will turn blue. 6. Press the control bar again to draw another small amount of sample into the ampoule.
7. Rock the entire assembly to mix the contents of the ampoule. Watch for a color change from blue to colorless. Repeat steps 6 and 7 until a permanent color change occurs. 8. When the color of the liquid in the ampoule changes to pink, remove the ampoule from the Titrettor. Hold the ampoule tip pointed upward and read the scale opposite the liquid level. Results are expressed in ppm
(mg/Liter) calcium carbonate (CaCO3)


More CHEMetrics Kits for Hardness:

Product Number Method MDS Range Price
K1705 EGTA (calcium) 50 ppm 50-500 ppm $33.00
K4502 EGTA (total) 2.0 ppm 2-20 ppm $33.00
K4520 EGTA (total) 20ppm 20-200 ppm $33.00
K4585 EGTA (total) 100 ppm 100-1000 ppm $33.00



Hardness Kits Instructions

Safety Data Sheet

Hardness Information


More Information
Manufacturer CHEMetrics
Call For Price No
Gas Hardness
4-20 mA Output No
Voltage Output None
Power Requirements 4 AAA Batteries
Datalogging No
Warranty 1 Year
Range 100-1000 ppm
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