K-2803 Chromate (hexavalent)

K-2803 Chromate Vacu-Vials Kit is used to determine Chromate levels from 0-3.50 ppm.

2-5 Business Days

SKU: K-2803

$38.50

Description / K-2803 Chromate (hexavalent)

Why Choose Vacu-vials?

CHEMetrics Vacu-vials self-filling ampoules are a great way to test for dissolved substances in liquid. Unlike our visual test kits, the Vacu-vials test kit allows you to obtain an instrumental result using the CHEMetrics Direct-Redout Photometers or any spectrophotometer capable of accepting a 13m diameter round cell. When using equipment from another manufacturer, set the spectrophotometer to absorbance mode, select the wavelength specified by the Vacu-vials kit instructions, and follow the test procedure. The K-2803 Chromate Kit is designed to accurately measure the levels of Chromate in water from 0-3.50 ppm.

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, Vacuvials 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

-25 mL Sample Cup

-Acidifier Solution

-Ampoule Blank

-Instruction Manual

Method:

The K-2803 uses the Diphenylcarbazide method. Hexavalent chromium salts are used in numerous industrial processes. They are also used extensively as corrosion inhibitors in open and closed cooling water systems. With the chromate test method, hexavalent chromium reacts with diphenylcarbazide under acid conditions to form a red-violet color. Results are expressed as ppm (mg/L) CrO₄.

How to Use:

1. Fill the sample cup to the 25 mL mark with the sample to be tested.	2. Add 2 drops of the Stabilizer Solution. Stir to mix the contents of the cup.

3. Place the Vacu-vial ampoule tip-first into the sample cup. Snap the tip and the ampoule will automatically fill.	4. To mix the ampoule, tilt it from side to side, allowing the bubble to travel from end to end.

5. Dry the ampoule and wait 2 minutes for color development.	6. Insert the Vacu-vial ampoule into the photometer, flat end first, and obtain a reading in ppm.