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  • porosity
  • 5. An HPLC column according to claim 4 wherein a sintered stainless steel disk is interposed between the wire mesh and the open end of the media chamber of 10 microns porosity. (google.ca)
  • Solvents
  • Some models of mechanical pumps in a HPLC instrument can mix multiple solvents together in ratios changing in time, generating a composition gradient in the mobile phase. (wikipedia.org)
  • compounds
  • This gives HPLC superior resolving power (the ability to distinguish between compounds) when separating mixtures, which makes it a popular chromatographic technique. (wikipedia.org)
  • column
  • An HPLC column provided with structure at its inlet and outlet ends to insure optimal distribution of fluids through the media therein. (google.ca)
  • 2. An HPLC column according to claim 1 wherein said deflector surface is of toroidal configuration. (google.ca)
  • 3. An HPLC column according to claim 1 wherein the openings in adjacent circles are offset half the distance between successive openings. (google.ca)
  • 4. An HPLC column according to claim 1 wherein a wire mesh is disposed at the side of the distributor plate facing the open end of the media chamber. (google.ca)
  • 6. An HPLC column according to claim 5 wherein the distributor plate has on the side facing the open end of the media chamber right-angularly disposed, spaced, parallel grooves. (google.ca)
  • 7. An HPLC column according to claim 6 wherein the grooves are spaced apart approximately 3/8 inches, are 1/32 inches deep and 1/4 inch wide. (google.ca)
  • 9. An HPLC column according to claim 8 wherein a wire mesh is interposed between the distributor plate and the sintered stainless steel disk. (google.ca)
  • 12. An HPLC column according to claim 10 wherein said angularly-disposed grooves are 3/16 inches wide, 1/36 inch deep and spaced angularly 15 degrees apart. (google.ca)
  • 13. An HPLC column according to claim 1 wherein the reentrant recess is of conical configuration. (google.ca)
  • Due to the small sample amount separated in analytical HPLC, typical column dimensions are 2.1-4.6 mm diameter, and 30-250 mm length. (wikipedia.org)
  • Components
  • HPLC has been used for manufacturing (e.g. during the production process of pharmaceutical and biological products), legal (e.g. detecting performance enhancement drugs in urine), research (e.g. separating the components of a complex biological sample, or of similar synthetic chemicals from each other), and medical (e.g. detecting vitamin D levels in blood serum) purposes. (wikipedia.org)