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lsd tests?

S

sonjay09

Bluelighter
Joined
Oct 8, 2002
Messages
88
Location
new zealand
i was wondering if anyone knew how to test lsd to see if it is actually what i had payed for??

any info or links would be grately appreciated

thanx
 
As far as I know, this is the wrong forum for this question, as it doesn't pertain to Pill Testing at all. Dunno if the mods want to move it or not, but here is an answer to your question anyway. :)

Taken from http://www.erowid.org/chemicals/lsd/lsd_info2.shtml:
How to Field Test for LSD
Avoid duds by Testing them Yourself.


Following are step-by-step instructions for field testing blotter for LSD

  1. Extract a section of the blotter with a minimal amount of ethanol. (enough to leave you with a few drops of liquid)
  2. Put a drop of the extraction on a 4-(dimethylamino)-benzaldehyde impregnated piece of filter (or chromatographical) paper.
  3. Allow to dry.
  4. Put one drop of concentrated hydrochloric acid (muriatic acid will work) on one side of the paper. A colored front should migrate over the paper (concentrating the color).
    A purple colored ring will appear (changing to blue 30-60 minutes later) if alfa or beta unsubstituted indoles are present (the whole paper will color if large amounts are present). This purple / blue coloring signifies the presence of LSD.
    According to the source, this simple field test is able to detect 7.5 micrograms (ug) of lsd without a problem (typical doses were listed as 75-250 micrograms; you should get that lucky or unlucky for that matter)
Click to expand...
 
If I remember correctly, 4-dimethylaminobenzaldehyde is also the main component of Ehrlich's Reagent. You may be able to find it at an amateur science/chemistry supply house, or possibly even a site that sells law enforcement style field testing kits. Otherwise there's always the good old bioassay method :) .
 
I don't believe so, if anything, the white of the paper is going to glow underneath the UV light... i really don't think you'd be able to make any distinction between the actual blotter paper and the LSD itself.
 
acid glows under uv light. it is a better test than ehrlich's, just too many false positives with that test. I am working on a modified version of ehrlichs, wana be a beta tester? let me know thru pm
 
The Marquis reagent can be used to screen for LSD. It should turn grey, and has a fairly low detection limit (5ug).
 
Is that LSD attached to a blotter? I'm just curious, as the paper from the blotter would react to the Marquis reagent as well, would it not?
 
no offence intended but have you actually tried the UV test?When I put it in front of the light you're right, the white of the paper did light up. The thing is, you could also very clearly see a circle lit up in a 'reverse' kind of way, not bright but darker but still with a glow. Will have to try again when cids next around... =D
 
Well, after doing some research, I was able to find this from our good friends at Erowid :)

located at http://www.erowid.org/ask/ask.cgi?ID=3013
Q: Is there any method (other than ingestion) to tell whether a substance is LSD?

A: The only way to definitively identify LSD is to do laboratory GC/MS testing of the material. But one field test is based on the fact that LSD glows under UV light (blacklight). Obviously other things glow under blacklight as well, so just the fact that it glows doesn't mean it's LSD, but if it doesn't glow, LSD can generally be ruled out. The glow is apparent in crystal form, liquid form, or liquid dropped onto other material such as blotter or sugar cubes.
Click to expand...
 
blacklight deff. works. Have u ever looked at a sugar cube? You can see the drop perfect (or any type of candy) Paper is a little more sketchy cuz the paper can glow. But ya it works.
 
that test is surely next to useless?

all it tells you is that you have something which glows under blacklight, not necessarily acid.

alasdair
 
I have heard just as many "reliable" sources call the blacklight test a load of crap as I have validate it. There are reliable color test reagents one can use, but I fail to see the point of any test besides bio-assay for LSD, adulteration is pretty much agreed to be an urban legend, so you've either got LSD or maybe a close analogue, or plain paper =)
 
wait just a minute now

THOSE OF YOU WHO ARE SAYING THE UV TEST IS USELESS SIMPLY DO NOT UNDERSTAND SENSISBLE AND EXPEDIENT TESTING PROCEDURES! STOP AND THINK ABOUT THIS:

No test is perfect, guys. Although this is a simplification, you can roughly categorize tests as highly sensitive or highly specific. Highly sensitive tests are used to rule out your subject of interest, be it a disease, chemical, etc. Highly specific tests are designed to rule in something. It's like strep throat in medicine. We use a highly sensitive test to rule out strep (called the "rapid strep"). If the test comes back negative, then we know it's not strep. If if comes back positive, then all we know is that it MIGHT be strep. We have to then use a highly specific test, ie a culture, to determine for sure if it is indeed a streptococcus infection.

So, applying these principles to testing of LSD, the UV test would be considered a highly sensitive test, with extremely low specificity. An assay, reaction, etc. could be considered highly specific tests, although they may not be so sensitive. Testing proceeds as follows:

1) Place the sample under UV light. If it doesn't light up, then LSD can be RULED OUT. If it does light up, then this simply tells you that it may be LSD.

2) If the previous test was positive, then you must choose from the available specific tests, such as a bioassay (very sensitive) or some reaction (not as sensitive).

So you see, whether testing massive quantities of stuff or just a few blotter papers, the UV test provides a nice "should I even bother" test for the next test, and definitely has its place in the testing process simply because it's so quick and cheap.

Of course, if steps 1 and 2 don't work, try step three:

3) Send me the acid. After about 12 hours I'll tell you how things went

:)
 
As far as Im aware a blotter either contains LSD or it doesnt ie its a dud.

LSD strength is variable due to how much was on the blotter and no other reason.

The thicker the blotter means it can hold more LSD.

Wodin
 
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