The Precipitation of Colloids by Means of Aluminium Hydroxide.

Abstract

potassium bicarbonate, etc. carry forward such an extension of this investigation. The writer hopes soon to be in a position to LABORATORY OF HEMMING MANUFACTURING CO., GARFIELD, N. J.

Preparation of Hemoglobin Solutions for Intravenous Infusion

“…The CO2 treatment also increased the proportion of methemoglobin. Removal of stroma with aluminum hydroxide (28) was not found satisfactory. Although toluene as used by Heidelberger (29) and a number of subsequent workers (2-4, 9, 16, 30), appears to remove stroma material quantitatively, the resulting solutions could be rendered free of toluene only with ditficulty and uncertainly.…”

The Heme Pigments of Cured Meats

“…The hemoglobin was released from the cells by dilution with chilled distilled water so that the final volume was roughly five times that of the original whole blood. This solution was next treated wi& about 10 per cent by volume of aluminum hydroxide cream, prepared according to the directions of Marshall and Welker (1913). This aluminum hydroxide was then centrifuged out along with the stroma and proteins other than oxyhemoglobin precipitated by the hydroxide.…”

The direct chemical estimation of carbamino compounds of CO2 with hæmoglobin

“…and small quantities thawed out on the same day as they were to be used. Some experiments have been done on haemoglobin solution prepared by laking washed cells by freezing and removing the stromata by adsorption with Marshall and Welker's [1913] alumina cream. This preparation was abandoned because the yield of carbamino compound was only about two-thirds of that obtained with Ada ir's haemoglobin.…”