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Section 7: Application Note - Solvent Saturation

Below is a real graph of a full extraction run using the Extraction Finder in Wavelength View. The

Extraction Finder tracked Chlorophyll (blue) and Cannabinoid (orange) signals. Note: The Chlorophyll/

Cannabinoid ratio (grey) signal is for the purposes of this manual only.

Cryo-Ethanol Extraction Run - Recirculation - Extraction Finder Logged Run Data

A. Filling System - The extractor was being filled with ethanol

a. No flow over sensor; no signal

B. Agitation Then Soak - The extractor was agitated then went through a soak cycle

a. No flow over sensor; initial signal noise due to mechanical vibrations

C. Flow Started/Equilibrating Flow - The flow for recirculation began

a. Full flow over sensor; signal spikes then drops after initial fluid flow

D. Recirculating - Extractor recirculated ethanol over system

a. Full flow over sensor; signal increases/decreases as Cannabinoid concentration equilibrates

and becomes homogeneous in ethanol

b. End point determined by both Cannabinoid and Chlorophyll signals (and their ratio)

becoming stable/unchanging

E. Emptying System using N

a. Extractor being emptied with nitrogen gas and system no longer chilled; Signal of both

Cannabinoids and Chlorophyll decrease

F. Emptying Residual Alcohol from Extractor - Extractor reservoir emptied

a. Decrease in both Cannabinoid and Chlorophyll signals; increase in ratio of Chlorophyll to

Cannabinoid from system heating (ethanol preferentially extracting Chlorophyll in

reservoir)

Arometrix, Inc.

Gas - Endpoint detected (solvent saturated)

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