Context Analytical procedures and technologies for soil analyses can be prohibitively expensive small laboratories researchers in developing countries. There is a need low cost high-throughput methods assaying pH, extractable aluminium phosphorus when conducting field trials on acid soils. Aims We investigated to develop rapid yet inexpensive colorimetric assays the assay of Colwell extracts. M...

A radioimmunoassay involving an 125I ligand has been developed and applied to the measurement of urinary metanephrine. To validate the clinical usefulness of this assay, we compared measurement of metanephrine by radioimmunoassay and of total urinary metanephrines by the Pisano colorimetric method. The radioimmunoassay is specific for metanephrine, whereas the colorimetric method measures both ...

Background: Serum creatinine is the most requested parameter in current practice context of functional exploration kidney. Its contribution to medical care particularly decisive for kidney transplant patients. The aim study compare colorimetric and enzymatic techniques available our laboratory determination samples from patients.
 Methods: Prospective carried out at Biochemistry University...

The increasing industrial development promotes serious environmental damage due to pollution of the environment. Regarding the petrochemical industry, contamination by oil and its derivatives causes the degradation of terrestrial and aquatic ecosystems. Thus, control and treatment strategies to combat the hazardous effects of oil pollution are needed. However, conventional physical-chemical tre...

Device independent color requires that all color imaging devices “speak” in CIE colorimetric terms. A color image scanner is one component of the desktop color imaging chain that needs to be colorimetric if color is to be device independent. Most commercial color scanners are not colorimetric. Instead, they are built as color densitometers, emulating commercial graphic arts scanners. There are ...