Product Notes

The industry also introducing manufacturing of new products Mintroleum gives finish product. Toluene and Mentroleum is being recycled in.

images using ImageJ’s plugin ReadPlate in a simple and easy manner.In this research, it was presented a laboratory class where titrimetric and colorimetric methods were used to

determine vitamin C levels in supplement pills. In the first part, vitamin C levels were measured in supplement pills using

three titrimetric methods, back titration with sodium thiosulphate (Na2S2O3), direct titrations with potassium iodate (KIO3)

and iodide (I2). Results obtained with trimetric methods were equivalent at 95 % confidence interval, methods were

compared using one-way ANOVA). In the second part, a quick and low-cost colorimetric method was carried out. It was

successfully used to measure vitamin C levels in supplement pills. It consists in reduction of the complex Fe3+ and 1,10-

phenanthroline by vitamin C to form a reddish-orange colored complex that was measured at 510 nm. The colorimetric

method was also carried out using digital images obtained with a flatbed scanner. RGB values were extracted from digital

images using ImageJ’s plugin ReadPlate in a simple and easy manner.