» Prepare Bentonite Magma as follows:
Sprinkle the Bentonite, in portions, upon 800 g of hot purified water, allowing each portion to become thoroughly wetted without stirring. Allow it to stand with occasional stirring for 24 hours. Stir until a uniform magma is obtained, add Purified Water to make 1000 g, and mix.
The Magma may be prepared also by mechanical means such as by use of a blender, as follows. Place about 500 g of Purified Water in the blender, and while the machine is running, add the Bentonite. Add Purified Water to make up to about 1000 g or up to the operating capacity of the blender. Blend the mixture for 5 to 10 minutes, add Purified Water to make 1000 g, and mix.
Packaging and storage Preserve in tight containers.
Auxiliary Information Please check for your question in the FAQs before contacting USP.Chromatographic Column
USP32NF27 Page 1172
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.