TROUBLESHOOTING
Causes and Fixes
1. The sample preparation may be incorrect. If the weight and/or volume is
incorrect, the LightLab result will not be accurate.
a. Double check the weight and volume added. If it is incorrect, re-extract
the sample.
b. Check scale calibration and re-calibrate if necessary (see Section 10)
2. The extraction may not be complete. This occurs more often with concentrates
than flower samples.
a. Heat is required for most concentrate samples. Skipping the heating step
may result in lower than expected results. Flower can be extracted
without heat.
b. After extraction of a concentrate sample, make sure there is no residue or
unextracted parts of the sample to be analyzed. In some cases, the
heating and extracting may have to be completed more than once to get a
good extraction.
c. Make sure the sample is moved quickly from the heater to the shaker. If
the sample is allowed to cool between heating and shaking, the extraction
may not complete.
d. Make sure the sample is shaken for the entire two minutes. More shaking
is ok but reducing the shake time may result in poor extraction and low
results.
3. The incorrect solvent or bad solvent was used. Never use pure ethanol, grain
alcohol, methanol or any other solvents for extraction. When the sample is
injected with incorrect solvent, the chromatography will suffer, resulting in
incorrect results.
4. The sample may not have been injected into the analyzer completely
a. Make sure at least 1ml of sample is injected prior to analysis. No air
bubble should be injected.
b. If the samples become difficult to inject, clearing the sample input may be
necessary, see Section 11, Clearing Sample Input.
5. For flower, the moisture content of the plant may be significant. LightLab
measures weight percent, and plant material will always contain some amount of
moisture. If wet plants are being measured, they may need to be dried prior to
analysis. There are several methods for drying plant material, contact support if
more information is required. Moisture correction is possible with LightLab, see
Section 11 “Moisture Correction on/off”
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