Login

Search the forums now!

Welcome, Guest. Please login or register.

October 21, 2025, 06:48:17 pm
Pages: [1]   Go Down

Author Topic: How do you tell whether you're supposed to use HLPC or GC?  (Read 495 times)  Share 

0 Members and 1 Guest are viewing this topic.

Lols123

  • Victorian
  • Trendsetter
  • **
  • Posts: 131
  • Respect: 0
How do you tell whether you're supposed to use HLPC or GC?
« on: May 18, 2011, 05:18:31 pm »
0
E.g. A food chemist wishes to determine the type of starch in a sample of custard powder. The instrment best suited to this type of analysis is?
HLPC or GC?
Logged

GuessWho

  • Victorian
  • Forum Regular
  • **
  • Posts: 59
  • Respect: 0
Re: How do you tell whether you're supposed to use HLPC or GC?
« Reply #1 on: May 18, 2011, 06:15:39 pm »
0
HPLC is used for the larger molecules, generally with a molar mass of 300 or more. GC is used for substances that are volatile and generally have molar masses below 300.
Back to the question, since starch is most likely going to be a large molecule with a molar mass that could potentially go into the thousands, I would suggest that you use HPLC to analyse it.
Logged
Pages: [1]   Go Up