AW: which powders are best?

[Guest guest]

 

 

As Stephen has pointed out, you CAN test for quantity. However, that

requires HPLC analysis. You can check for identity with TLC. The price

difference between TLC and HPLC is, at least here in Europe, quite big. If

you want to find out, for example, if an alcohol extract looks the same (has

the same fingerprint) like a water extract, you could compare the TLC

pictures and see which ingredients are in one and not the other. Only, you

need a good TLC picture plus experience in analysing them.

 

Stephen,

 

Is your lab in China or Taiwan? Is it certified by some type of agency? What

kind of tests are you able to perform (besides HPLC, obviously)? Would you

test for other companies? (E-mail me privately)

 

 

Simon Becker

 

 

-----Ursprungliche Nachricht-----

Von: <

Gesendet: Freitag, 17. Januar 2003 18:07

An:

Betreff: Re: which powders are best?

 

 

, " Simon " <s.becker@l...>

wrote:

Determining the amount of substance (quantitative

> analysis) is more difficult and especially much more expensive.

 

thank-you, simon. this is unfortunate. if we cannot test for quantity of

actives,

this is a waste of time. many companies already tests for the presence of

actives, but this is of much less value. at least we know we got the right

thing,

but how much is more important to me. I am sure you are right as to the

reasons why companies avoid this issue. Persoanlly, I have switched back to

the use of raw herbs in almost all patients.

 

 

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