A Stable Murexide Reagent for the Estimation of Calcium in Micro Quantities of Serum

[摘要] The effects of various solvents on the fading rate of alkaline murexide were studied. Glycerol, methanol, and propylene glycol were found to retard the fading rate of murexide at pH 12.0 to a considerable extent. Propylene glycol was the most satis-factory of these solvents. It was further noted that the fading rate of alkaline murexide in propylene glycol-water solution was directly proportional to the amount of water contained in the reagent, and that a reagent stable for at least 1 week at room temperature could be prepared.

[学科分类] 过敏症与临床免疫学