Henna Testing - a proposed method of working.

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Posted by mark foster on October 12, 2002 at 07:39:23:

So............here it is. If we can work towards a method that
everyone agrees upon then there should be no problem yes?

If each henna is sent from the *main supplier or from the plantation
source* of that supply then there shouldnt be a problem of any so
called 'old' henna being tested and/or malicious tampering.

Tests can be easily controlled

1. Each sample once recieved is logged,date recieved,sender,recieved
by and placed under the same conditions as all other samples. The
sample is labelled by the reciepient with a sticky label placed over
so that the seal must be broken before testing(just in case anyone is
worried about contamination at the testing area)

2. ALL testing equipment is clean and sterile between tests. Before
the henna sample is tested the contents should be shaken vigously in
a sealed bag so to disturbe the contents. This is required for 5mins
so to make sure that the contents should it contain any other
material is properly mixed. This is required as other particles may
settle in transit making the bottom of a sample possibly laden with
other heavier particles.

3. Measured amounts of henna and water is used for each sample. As
the microscope works under a time scale then each sample is measured
under the same amount of time and brightness settings thus allowing
the contents to settle and several results to be obtained.

4. Once a sample has been tested the report is drawn up - images
logged and report written before the next test is carried out so to
avoid any samples being mixed up and the wrong reports being made.
The sample is then re-labelled with notification of the date and time
of testing and reference to the said report. The henna is then placed
back in controlled conditions to be sent back to the sender with a
copy of the test report.

And thats it.

I believe that this makes a pretty safe and tight testing protocol.
The same is used for testing food wrapping (cardboard etc) in the
printing industry here which i had involvment with a few yrs ago.

Now i would say that if your unwilling to now send henna samples to
be tested then you should state your reasons why as the above is
pretty controlled.

For everyones information I have the same equipment as CCJ. So it
would be possible for two reports to be made from two different
people. Therefore it rules out an bias reports and also rules out any
errors that could possible occur as if the same henna is sent to both
parties then the same results should appear. Ive yet to run this by
you CCJ but i would have thought you would not have a problem with
anything i have mentioned.

Obviously as a annual crop then each crop needs to be tested. If you
are waiting for your new shipment/crop then thats fine. When its
available send it in.

So feedback please and constructive feedback.......this is for the
benefit of the customers - your customers.

ps im going on holiday today for two weeks so will reply after the
28th! just wanted to get this out before i go otherwise id be
posting this from a cafe in Spain!!


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