Cannabis Testing Instruments
Audit-ready accuracy for regulated labs, new or Certified Pre-Owned. Choose the latest technology with full manufacturer warranties, or OEM-level performance and documentation at a fraction of the cost. Ideal for start-ups and high-throughput labs alike.
New or Certified Pre-Owned, it’s up to you
Every core cannabis testing platform is available both ways. Pick what fits your budget and timeline, or mix new and Certified Pre-Owned across your lab.
New instruments
The latest technology, straight from the manufacturer.
- Full manufacturer warranties
- Current models and software
- Installation and training from GMI
- Exclusive U.S. distributor of KNAUER
Certified Pre-Owned
OEM-level performance at a fraction of the cost.
- Save up to 50% versus new
- Ready to ship, no OEM backlog
- Refurbished to original specs with documented calibrations
- Warranty and service plans available
The instruments every cannabis lab needs
The cannabis market is scaling fast, and so are expectations for defensible, standards-based testing. Each platform below is available new or Certified Pre-Owned.

HPLC
Liquid Chromatography
Quantifies cannabinoid potency and accurately determines levels of THC, THCA, CBD, CBDA, and CBN.

GC
Gas Chromatography
Terpene profiling and residual solvent testing, with GC-MS/MS for targeted pesticide confirmation.

MS
Mass Spectrometry
LC-MS/MS for multi-residue pesticide and mycotoxin panels, and ICP-MS for heavy metals.

CENTRIFUGE
Benchtop & Ultra Centrifuges
Separate samples quickly and accurately to maximize efficiency. Ideal for any extraction application.
What you need to measure, and how
A comprehensive cannabis panel spans six areas. Here’s what each one covers and the instruments that handle it.
Cannabinoids & terpenes
Potency, profile, and label claim verification.
Residual solvents
Confirmation that extraction artifacts meet limits.
Pesticides & mycotoxins
Ultra-trace detection at low-ppb LOQs for consumer safety.
Heavy metals
Lead, arsenic, cadmium, and mercury screening in plant material and finished goods.
Microbial contamination
Yeast and mold, pathogenic bacteria, and total aerobic counts.
Moisture & water activity
Stability and shelf-life indicators for flower and concentrates.
Compliance and data integrity, built in
Regulatory frameworks vary by jurisdiction, but auditors consistently expect the same fundamentals.
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Method validation & system suitabilitySelectivity, linearity, accuracy, precision, LOD/LOQ, and robustness, with suitability criteria before batch release.
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Traceable calibrationsFor flows, temperatures, wavelengths and mass axis, and detector response.
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Data integrity controls21 CFR Part 11-supportive software, audit trails, user roles, and secure e-records.
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Quality documentationSOPs, maintenance logs, and change control.
Why many labs go Certified Pre-Owned
Prefer new? We offer that too. Here’s why so many cannabis labs choose GMI Certified Pre-Owned instead.
Verified performanceRefurbished to original specifications with documented calibrations.
Immediate availabilityReady-to-ship, cannabis-configured systems with no OEM backlog.
Warranty & service plansProtect uptime with critical spares and preventive maintenance.
Capital efficiencySave up to 50% versus new and invest in standards, consumables, and staff.
Top brandsAgilent, Thermo Fisher, PerkinElmer, and more, matched to your state’s analyte list.
Faster readiness, from install to audit
Whether you’re launching a new facility or expanding throughput, GMI helps you reach validated performance quickly, without overspending.
- 01
Site planning & installationMeet electrical, HVAC, and venting needs before your instruments arrive.
- 02
Method transfer assistancePotency, solvents, pesticides, metals, and microbes, including matrix-matched calibration and internal-standard strategies.
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Training & SOP templatesFor routine operation, QC checks, and troubleshooting.
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Ongoing performance verificationControl charts, continuing calibration verification, blanks, spikes, and duplicates.
Credible, compliant results start here
Deploy audit-ready potency and safety testing with research-grade confidence. Tell us your panel and budget, and we’ll recommend new, Certified Pre-Owned, or a mix of both.

