Formaldehyde Measuring System

Introduction

The formaldehyde has been reported to be highly allergic and is carcinogenic. Formaldehyde reacts with chromo- tropic acid in presence of concentrated sulphuric acid to give violet coloured complex which is a measure of formaldehyde level. The developed system is based on Lambert-Beer's law, comprises an LED ( 583nm) as light source; sample holding system, detector, current to voltage converter, log amplifier, display-31/2 digit. The test solution after color development is analyzed with system to display concentration in ppm level.

Specifications

• Measuring Range: concentration (0.5 - 10 ±0.02 ppm) in solution.
  

Salient Features

• Direct display of concentration in ppm
  
• Stable and dedicated reagents.
  
• No standard required for calibration.
  
• Portable and low cost analysis.
  
• Easy to operate.

Applications

Analysis of formaldehyde in water, air samples

Contact:

VP Giridhar,
Head, BDG and S&M Centres,
Central Scientific Instruments Organisation,
Chandigarh
E-mail: vpg_bdg_csio@yahoo.co.in