Leather Chromium VI Tester

Leather Chromium VI Tester

PRODUCT DESCRIPTION

This set of testing equipment can detect the hexavalent chromium content in leather, fur, and its products.

TEST STANDARD

DIN 53314, ISO 17075, ISO 20345:2011

MAIN DEVICE:

1. Sample preparation device: precision electronic balance, water bath oscillator, filter device, pH meter;

2. Analysis device: precision spectrophotometer, computer (customer-owned);

3. Supporting glassware: measuring cylinder, volumetric flask, beaker, pipette, conical flask, iodine bottles;

4. Supporting drug reagents: potassium dichromate standard substances, acetylacetone, glacial acetic acid, 1,5 - diphenylcarbazide and so on;

5. Data processing software: can automatically calculate the sample test results.

Accessories of this set of machine:

Analytical Instruments: Spectrophotometer

Glass electrode pH meter

Constant temperature water bath oscillator

Electronic analytical balance

Filtering device: sand filter funnel, conical flask

Decolorization column and decolorizer:

Suitable reverse phase material filled with glass or polypropylene sample tube

Solid phase extraction system SPE (one-time consumable, one SPE cartridge for each sample used)

Constant temperature oven

TEST METHOD

Spectrophotometric method: soluble hexavalent chromium Cr6 + in the sample can be dissolved in pH 7.5 ~ 8.0 phosphate buffer, the dissolution of Cr6 + 1.5 - diphenylcarbazide oxidized to 1.5 - diphenyl azocarboxylic acid hydrazide, generated Red and purple chromium complex, the complex can be quantitatively detected at 540nm with a spectrophotometer, the standard hexavalent chromium working curve, calculate the sample hexavalent chromium content.