RESIDUAL SOLVENTS
USP <467> Class 1–3 — pharma & supplement lots
USP <467>UNIT-04 · ONLINE · VOLATILE
AGILENT 7890B / 5977B
GC-MS
GAS CHROMATOGRAPHY – MASS SPECTROMETRY
Volatile-organic fingerprinting — solvents to hydrocarbons, named and numbered.
24–48HRTURNAROUND
~30MINCYCLE TIME
~45SAMPLES / DAY
EI 70eVIONIZATION
01
WHAT IT READS
USP <467> · NIST LIBRARYVOLATILE ORGANICS
Full VOC scan — product & environmental matrices
EPA LISTBTEX
Benzene → xylenes — produced water & soil
PPB LODHYDROCARBON FINGERPRINT
C6–C44 total petroleum range — fuels & condensate
C6–C44TERPENES
Botanical profiles — oils & nutraceuticals
FULL PANELPAH
Polycyclic aromatics — asphalt & combustion residue
NAPH→PYR
02
THE PROCESS
VAPORIZE → SEPARATE → MATCHSTEP 01
AUTOSAMPLER INJECTION
The 7693 tower injects microlitre volumes — the split/splitless inlet vaporizes the sample instantly.
STEP 02
CAPILLARY SEPARATION
UHP helium carrier drives analytes through the capillary column — separated by boiling point and polarity.
STEP 03
EI IONIZATION
70 eV electron impact shatters molecules into reproducible fragment ions — the universal fingerprint.
STEP 04
QUAD SCAN & MATCH
The 5977B scans m/z in SCAN/SIM modes; every spectrum is matched against the NIST library.
STEP 05
ID & QUANT
Retention time + ion-ratio confirmation; external-standard curves turn peaks into certified numbers.
NIST LIBRARY MATCH
RT + ION-RATIO CONFIRM
SCAN / SIM MODES
EXTERNAL-STD CURVES
03
THE UNIT
OVEN · COLUMN · MSD
PHOTO: GC WITH AUTOSAMPLER — REPRESENTATIVE OF THE 7890B/5977B CLASS.
RESULTS IN 24 HOURS OR LESS
FINGERPRINT → CERTIFIED IDENTITY
GET A QUOTE