Microextraction Analysis

Add-on test ideal for preliminary pesticide analysis


Protect your manufacturing process with early detection of pesticides.

Trace amounts of residual pesticides can quickly exceed harmful levels when flower biomass is processed into concentrates and/or extracts. Microextraction testing can help mimic traditional manufacturing processes and offer early insight into potential contamination of a final product. With the SC Labs Microextraction Test, clients can better evaluate pesticide risk and determine if raw material should be purchased and processed.


Features and Benefits

  • Laboratory analysis targets presence of up to 105 pesticides in biomass
  • Analysis data meets growing demand to evaluate raw materials prior to purchase or processing concentrates and extracts
  • Advanced instruments and proven test processes (HPLC-MS and GC-MS)
  • Expert scientists and support representatives available to assist you in interpreting results and assessing potential risks
  • Fast and reliable turnaround times
  • Wide range of reporting and data management solutions to help streamline your processes

What is Microextraction?

The purpose of the microextraction test is to provide an investigative procedure that can assist clients with screening flower biomass for trace residual pesticides.

The microextraction process is an additional preparation step by which biomass provided by the client is extracted to make crude oil at our laboratory. The resulting concentrate is then analyzed using high-performance liquid chromatography-mass spectrometry (HPLC-MC) and gas chromatography-mass spectrometry (GC-MS) to screen for residual pesticides.

The SC Labs solution utilizes acetonitrile or pentane as the solvent for the in-house microextraction. An important note is that extraction methodology can impact pesticide concentration. While SC Labs has determined both acetonitrile and pentane to be extremely effective solvents overall, client extraction methodologies may produce concentrates with varying efficacies of pesticide extraction/concentration. While this assay is an excellent guidance and screening panel, it is not intended to correlate or directly predict final product testing values.

What other contaminants are detected with microextraction?

The SC Labs test method is used to detect residual pesticides only. We do not offer microextraction testing for any other contaminant i.e., potency, heavy metals, microbiology, etc.

Cannabis Microextraction pipette and test tubes

Sampling Process

To improve the results and efficacy of this microextraction, SC Labs recommends following some simple steps to ensure a representative sample is received.

Batch Size:

In order to provide a more representative sample of the entirety of the biomass, SC Labs recommends establishing an upper limit for your batches i.e., 100 lbs, 250 lbs etc. The smaller the batch, the more statistically representative the sampled material will be. For this assay, a minimum sample size of 10 g and a maximum sample size of 60 g is needed for processing.

Representative sampling therefore is extremely important in representing the entirety of the biomass. SC Labs recommends establishing an internal sampling procedure to help with consistency of sample selection. (See Figure 1 for a sampling example.) In this example, 8 increments are taken from each container from specific locations to produce a more representative composite sample for testing. If each increment is 7.5 g, this will produce a composite sample at 60 g (maximum submission mass), and if each increment is taken at 1.25 g, this will produce a composite sample at 10 g (minimum submission mass) from this container.

For batches being stored in multiple containers:

  1. Target sample mass (10-60 g depending on your process) / Number of containers. This gives you the amount needed from each container.
  2. Mass (in grams) needed per container (value from step 1) / 8 increments (number of increments needed per container based on sampling procedure above). This will give you the mass needed for each increment needed to form the composite sample per container.

For example: 2 containers with a target of 60 g composite sample:

  1. 60 g / 2 containers = 30 g per container
  2. 30 g per container / 8 increments = 3.75 g per incremental sample, giving you a 30 g composite sample per container

Ask your SC Labs account manager for more information about the microextraction test solution. Contact us online or call 866-435-0709.

Micro Extraction Sample Process Diagram
Figure 1: Example of representative sampling


Confirm cannabis is ready for production with our field sampling solutions.

Verifying that biomass, flower, or distillate is clean before purchasing can be a labor intensive procedure. SC Labs can help with our quality assurance (QA) field sampling solution. Our internal procedures and sampling team are ready to support your production needs and evaluation of clean source material.

To take advantage of the SC Labs Field Sampling Service, contact your sales representative.

SC Labs Field Sampling Rep with ipad

SC Labs

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