Some of the key players that fuel the growth of the polyvinylpyrrolidone market comprise Bohai Nky Pharmaceuticals, Ashland, BASF, Zhangzhou Huff Chemical, Nanhang Industrial, Shanghai Yoking Water Soluble Material
Tech Co., Ltd, Hangzhou Motto Science Technology Co.
The polymer solution is loaded into the column at an elevated temperature; it is crystallized to near-ambient temperature with no flow and then the solvent is moved through the column to elute the amorphous soluble material
towards the online detectors.
(This ratio, water temperature, and purity will allow extraction of 18 percent to 22 percent of the soluble material
from the coffee, yielding a brewed coffee concentration (brew solids) at 1.15 percent to 1.35 percent soluble concentration)
One marker for possible soluble material
is the presence of calcite or gypsum, often observed as crystals in the soil.
"The glaze I was working on is unique because it uses a soluble material
(borax) that has been sintered and used as an unsieved component in the glaze," Sturino explains.
Confirming the presence of the oil or grease requires a simple, fast microextraction method for isolating soluble material
. To begin this analysis a portion of the dark contaminant material is transferred, using a micro-scalpel or tungsten needle, to an aluminum-coated slide that has a mirror finish.
This problem is more acute for materials which are hygroscopic in nature, such as water soluble material
Phase contrast was achieved by sinking the specimens in toluene for ~1 h to extract the soluble material
S in the surface.
In short, both modern and ancient samples were decalcified by sonication in 0.25 N HCl, the soluble material
was discarded, and the insoluble collagen remnants were rendered soluble by gentle heating for a day or two in a rocking bath of 0.01 N HCl.
The pressure and increased temperature help the solvent extract as much soluble material
as possible from the sample.
The soluble fraction includes any soluble material
from faeces plus urine.