A new alginate-based powder may solve that problem. The material, which solidifies menstrual blood by turning it into a gel mixture, could reduce leakage in period products without compromising ...

“The alginate powder alone, when blood is added, doesn’t absorb the blood very well,” says Hsu. “It has kind of like an unstirred-cocoa-powder-in-milk consistency with a dry core. We added ...

After discarding those that produced too runny a gel, they settled on a powder based on alginate, a polymer found in algae. The team’s tests suggested that the positively charged calcium ions in ...

Then it is diluted with more water and filtered. The mixture is evaporated and further processed to make sodium alginate powder. Calcium chloride is made from limestone which is a common rock that is ...

Cut and mixed with water to make a thick gel. Diluted with more water and filtered. Mixture evaporated and further processed to make sodium alginate powder.