Murray-Brown Laboratories | Testing Library

Residual Solvents

Method Description

Samples are extracted into solvent. Salt water is added to the extract to aid evaporation. The headspace of the sample is analyzed by HS-GC-MS.

Method

USP <467>

Instrument

HS-GC-MS

Turnaround Time

5 Business Days

Sample Required

25 g

Matrix

Botanicals, Extracts, Finished Products, Raw Materials

&Analyte	Units	LOD	LOQ
n-Propane	mg/kg	30	100
n-Butane	mg/kg	30	50
Methyl Alcohol	mg/kg	100	200
n-Pentane	mg/kg	10	50
Ethanol	mg/kg	30	100
Ethyl Ether	mg/kg	10	20
Acetone	mg/kg	10	50
Ethyl Formate	mg/kg	10	20
Isopropyl Alcohol	mg/kg	300	1000
Methyl Acetate	mg/kg	10	20
Methylene Chloride	mg/kg	10	20
Methyl-T-Butylether	mg/kg	10	20
n-Hexane	mg/kg	3	10
1-Propanol	mg/kg	10	20
2-Butanone	mg/kg	10	20
Ethyl Acetate	mg/kg	10	20
2-Butanol	mg/kg	10	20
Benzene	mg/kg	0.5	2
Isobutanol	mg/kg	30	100
Isopropylacetate	mg/kg	10	20
n-Heptane	mg/kg	10	20
1-Butanol	mg/kg	200	500
Propylacetate	mg/kg	10	20
Toluene	mg/kg	10	20
3-Methyl-1-Butanol	mg/kg	50	150
Isobutylacetate	mg/kg	10	20
1-Pentanol	mg/kg	50	150
n-Butylacetate	mg/kg	10	20
m,p-Xylenes	mg/kg	10	40
o-Xylene	mg/kg	10	20
Anisole	mg/kg	10	20

&Analyte	LOD	LOQ	Unit
Aspergillus flavus	1 viable cell	1 viable cell	Sample Required
Aspergillus fumigatus	1 viable cell	1 viable cell	Sample Required
Aspergillus niger	1 viable cell	1 viable cell	Sample Required
Aspergillus terrerus	1 viable cell	1 viable cell	Sample Required

&Analyte	Units	LOD	LOQ
Cannabichromene (CBC)	mg/g, %	0.01	0.2
Cannabicitran (CBT)	mg/g, %	0.01	0.2
Cannabidiol (CBD)	mg/g, %	0.01	0.1
Cannabidiolic Acid (CBDA)	mg/g, %	0.01	0.1
Cannabidivarin (CBDV)	mg/g, %	0.01	0.1
Cannabigerol (CBG)	mg/g, %	0.01	0.1
Cannabinol (CBN)	mg/g, %	0.01	0.1
Delta - 9 THC (THC)	mg/g, %	0.01	0.1
Delta 9 - Tetrahydrocannabinolic Acid (THCA-A)	mg/g, %	0.01	0.1
Potential CBD	mg/g, %	0.01	0.1
Potential THC	mg/g, %	0.01	0.1
Tetrahydrocannabivarin (THCV)	mg/g, %	0.01	0.1

&Analyte	LOQ	LOD	Units
Ethanol	0.010	0.0025	%
Methanol	0.010	0.0025	%

Testing Library