Manual

3
Do not dispose of Step 1, Step 2, or Step 3 solutions, spray nozzles, or
bo les unless empty or expired. Bo les contain enough solution for
several tests.
Store solutions at ≤ 39.2 F (4 C). Do not store with food.
SKC recommends sealing the solution bo les tightly with the provided screw
caps for transport and storage.
Thoroughly wash exterior of bo les with soap and water before
sampling at another site to avoid cross contamination.
Reading MethAlert Results
• The color bloom will be bright blue if methamphetamine residue is
present in the range of 15 to 5000 μg (see photos below).
• Positive color bloom intensity is directly proportional to the quantity of
methamphetamine residue on the wipe (e.g., meth at 15 μg would be a
lighter blue than meth at 250 μg).
• Positive color bloom will last 15 to 20 minutes. Photograph results for
permanent record, if required.
Interferences
MethAlert is designed to detect the presence of methamphetamine residue to a
lower limit of visual identifi cation of 15 μg per wipe.
Possible Positive Interferences
• MDMA (Ecstasy) – very dark/deep blue color reaction
• Ritalin
®
(Methylphenidate) – pale violet color reaction
• Methcathinone (Cat) – pale blue color reaction
• MDA (3,4-Methylenedioxyamphetamine) – pinkish rose color reaction
• MDEA (Methyl diethanol amine) – deep blue to muddy brown at higher
concentrations
• Some secondary amines can cause a color reaction
Negative Interferences
There are no known negative interferences.
Positive – bright blue color bloom
Meth residue detected
between 15 and 5000 μg
(See Quick Guide for color.)
Negative – no blue color bloom
Meth residue not detected
at 15 μg lower limit of
visual identifi cation
Negative
Positive