PHOTOELECTRIC COLORIMETER

The Determination of Bilirubin with the Photoelectric Colorimeter

The main source of error in the determination of bilirubin in serum by the diazo reaction has been the loss caused by adsorption on the protein precipitate. In addition, the lack of an accurately matching artificial standard and the sensitivity of the azobilirubin color to changes in pH have made accurate calorimetric determinations impossible, without the aid of some type of objective photomet...

EIMER & AMEND PHOTOELECTRIC COLORIMETER For Comparing and Measuring Total Light Transmission and Turbidity of Liquids Applications

Applications The Eimer and Amend Photoelectric Colorimeter can be used wherever "visual" colorimetric methods are employed. Published determinations with this type of instrument include the following: Fluorides, HCN (turbidity), Blood sugar, Urine sugar, Blood creatinine, Cholesterol, Hemoglobin, Indican, Bilirubin, Nitrogen, Blood protein, Urine protein, Spinal fluid protein, Urea, Creatine, G...

The Determination of Creatinine and Creatine in Blood and Urine with the Photoelectric Colorimeter

In spite of their biological importance, measurement of creatinine and creatine in blood plasma has been uncertain because of the low concentrations in which these substances, especially creatine, appear, and the non-specificity of the Jaffe reaction commonly employed for their determination. The presence of creatine in plasma has been questioned since the work of Wilson and Plass (l), because ...

A Method for Measuring Bacterial Pigments by the Use of the Spectrophotometer and the Photoelectric Colorimeter.

Adaptation of a Photoelectric Colorimeter to a Computer Program for Calculating and Storing Data in a Clinical Chemistry Laboratory.

In order to facilitate data processing in the clinical laboratory, a system was devised for colorimetric analysis in which the necessary calculations for hemoglobin measurement were performed automatically using analog and digital computer programs singly and combined. The technics described are essential steps toward an over-all system for obtaining, calculating, storing, and retrieving data i...