10 Questions to Ask Before Buying Cannabis Extraction Equipment
Buying cannabis extraction equipment is a capital-intensive, long-lead decision that shapes your facility's throughput, compliance posture, and operating costs for years. The wrong purchase — a machine that underperforms its spec sheet, arrives without the certifications your jurisdiction requires, or comes with a warranty that excludes the components most likely to fail — is expensive and slow to correct. These ten questions give you a structured framework for evaluating any vendor's offering against your real operational requirements.
1. Can You Show Me the Actual Throughput Documentation in Writing?
Marketing copy and spec sheets are not the same thing. A vendor quoting throughput figures verbally or in a brochure without a signed engineering document to back them is asking you to take their word on the most commercially important number in the transaction.
Ask for a signed cutsheet, engineering manual, or specification sheet that states per-run capacity, cycle time, and per-shift throughput as discrete, documented figures — not estimates hedged with "up to" language buried in a footnote. For context, Decimal's 5.HX publishes a per-run capacity of 5 lbs., an approximate 30-minute cycle time, and an approximate 80-lb.-per-8-hour-shift throughput as verified, source-traceable specifications. The 15.HX documents up to 15 lbs. per run, an approximately 30-minute cycle time, and 200+ lbs. per 8-hour shift. These figures are reproducible precisely because they are committed to in writing with stated caveats (solvent blend, temperature, and solvent-to-material ratio all affect actual runtimes). If a vendor cannot produce equivalent documentation, that gap is meaningful.
2. Is the System Rated for Class I, Division 1 (C1D1) Service?
Hydrocarbon solvents — butane, propane, isobutane — are flammable gases. Any extraction system operating with these solvents must be installed in a space rated for their hazard classification, and the equipment itself must be designed for the corresponding electrical area rating. Class I, Division 1 (C1D1) is the most stringent classification for areas where flammable vapors are continuously or intermittently present during normal operation, which is exactly the condition inside an operating hydrocarbon extractor.
The C1D1 rating applies not just to the main vessel but to every electrical component in the operating zone — control panels, tablets, displays, and monitoring equipment. Decimal's 40.HX specifically carries a C1D1 explosion-proof touchscreen tablet interface as a verified, published specification. When evaluating competing equipment, ask which specific components carry the C1D1 rating and request the documentation showing this. "Explosion-proof rated" as a general claim without component-level detail is not sufficient for your insurance carrier, your building department, or your AHJ (Authority Having Jurisdiction).
3. Are the Pressure Vessels ASME Code and Third-Party Inspected?
Pressure vessels in extraction equipment — particularly those used in CO2 extraction, which operates at high working pressures — carry an engineering safety obligation that goes beyond the manufacturer's own quality control. ASME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code establishes the construction and inspection standards that most North American jurisdictions recognize for pressure vessel certification. The ASME U-stamp on a vessel means an independent, ASME-accredited inspector has reviewed the design and manufacturing process, not just that the vessel was built to those dimensions.
Decimal's CO2 systems, including the 20.LE, carry ASME code construction available on qualifying pressure vessels, along with CRN (Canadian Registration Number) availability for cross-border operations. Ask any vendor whether the U-stamp is standard or optional on their pressure vessels, and if optional, at what stage in the order process you must elect it. A vessel that was not built to the ASME code from the start cannot be retroactively stamped.
4. Has the System Been Peer Reviewed by Pressure Safety Inspectors?
ASME certification addresses vessel construction. A separate layer of review addresses the complete system as an operating assembly — the interconnecting piping, valve arrangements, pressure relief routing, and safety interlocks that determine how the whole machine behaves under both normal and fault conditions. Pressure Safety Inspector (PSI) review is the recognized standard for this system-level evaluation.
Decimal's HX-series hydrocarbon extractors — the 5.HX, 15.HX, and 40.HX — all list peer review by Pressure Safety Inspectors as a published, verified feature. This is not the same as a generic "safety tested" or "quality inspected" claim; PSI review is a credential specific to pressure system safety. Ask vendors to name the reviewing organization and provide documentation. If a vendor cannot produce evidence of third-party pressure safety review, the liability exposure in a fault event falls more heavily on the facility operator.
5. What Does the Warranty Actually Cover — and What Does It Exclude?
Warranty language is where many equipment purchases conceal their most painful surprises. A "lifetime warranty" headline that applies only to the stainless steel vessel body against pitting or corrosion — while gauges, gaskets, and valves carry only a one-year term — is a materially different commitment than a lifetime warranty on the complete system.
Read the warranty document carefully enough to answer these specific questions: What is the duration for wear items — gaskets, seals, O-rings, valves? What triggers voiding? Does the warranty cover labor and shipping for warranty claims, or only replacement parts? Is warranty service available on-site, or does the equipment have to return to the manufacturer? Decimal's HX and EX lines carry a Limited Lifetime Stainless Steel Warranty against pitting or corrosion on Decimal-manufactured stainless, with gauges, gaskets, and valves on a one-year term — a distinction that is clearly stated rather than obscured. Whatever terms a vendor offers, get them in writing before the purchase order is signed.
6. Does the Manufacturer Build Domestically, or Is This a Rebranded Import?
This question matters for several reasons beyond simple preference. Domestic manufacturing typically means that engineering documentation, material certifications, and quality records are available in English and traceable to known suppliers. It also affects your options when a component fails — domestic manufacturers generally have shorter lead times for replacement parts and are more accessible for technical support across time zones.
Decimal's CO2 extraction systems carry a "Made in USA" designation as a published, verified specification on the 20.LE and 100.C. For hydrocarbon and ethanol equipment, domestic stainless steel construction is stated explicitly in warranty documentation. When evaluating other vendors, ask specifically where the machine is manufactured and assembled, not just where the company is headquartered. A company with US offices may be reselling equipment assembled abroad, which may or may not meet your facility's procurement requirements or your insurer's specifications.
7. What Is the Lead Time from Order to Delivery, and What Can Delay It?
Lead times for extraction equipment are routinely longer than sales teams project at the time of order, particularly for custom configurations, ASME-stamped vessels, or systems that require third-party inspection before shipping. Understanding the realistic lead time — and the factors that extend it — lets you sequence your facility buildout and staffing plan accordingly.
Ask for a written lead time estimate, and then ask what assumptions it is built on: Is ASME stamping included in that estimate? Does the clock start at purchase order, at receipt of deposit, or at completion of engineering drawings? Are there supply-chain components (specific pumps, control panels, electrical enclosures) that carry their own lead times independent of the main assembly? A vendor who cannot answer these questions specifically has likely not worked through the production schedule in detail. The right answer is a detailed breakdown, not a round number.
8. Is the Electrical and Control System Rated for Your Area Classification?
The extraction vessel is only one part of the hazardous-area compliance picture. The control system — PLC, HMI, power distribution, wiring methods — must be rated for the electrical area classification of the room in which it operates. For C1D1 hydrocarbon extraction rooms, this means all electrical equipment in the zone must either be explosion-proof rated, intrinsically safe, or located outside the classified area with conduit seals and wiring methods appropriate for the classification.
Decimal's 20.EX ethanol centrifuge carries C1D1 ratings on the centrifuge, umbilical control panel, and tablet as separately documented certifications. The 40.EX carries a C1D1 rating alongside UL-recognized electrical components. Ask any vendor to map out which specific electrical components carry which classification ratings, and to identify any components that are not rated for your target area classification, because those will require either relocation outside the classified zone or substitution with compliant alternatives during installation. Your AHJ and electrical inspector will ask these same questions.
9. What Does Post-Sale Technical Support Look Like in Practice?
Equipment that performs well on day one but cannot be supported effectively when something goes wrong is a liability, not an asset. Post-sale support encompasses remote technical assistance, on-site service availability, spare parts stocking and lead times, and access to the engineering team when a process question exceeds the operator's documentation.
Ask vendors specifically: Is there a dedicated support line or are you routing tickets through a general inbox? What are the response time commitments for production-down situations? Are service technicians available to travel to your facility, and if so, at what lead time and cost? Are common wear parts — seals, gaskets, valves, flow-control components — stocked domestically for same-week shipping? The answers reveal whether post-sale support is a designed part of the vendor's business model or an afterthought. Decimal's systems support networkable touchscreen HMI with remote support capability on equipment like the 80.TF thin-film distillation system, enabling remote diagnostics without an on-site visit for a range of operational questions.
10. Is the Equipment GMP-Compatible, and What Does That Actually Mean for Your Facility?
"GMP-compatible" and "GMP-certified" are not the same claim, and equipment vendors sometimes use them interchangeably in a way that creates false regulatory confidence. No extraction machine carries a GMP certification the way a pharmaceutical drug carries an FDA approval — GMP (Good Manufacturing Practice) is a facility-level and process-level standard, not a product-level certification. What a piece of equipment can claim is that it is designed and constructed in a way that supports a GMP-compliant operation: smooth-bore stainless steel contact surfaces, cleanable geometries, documented construction and material traceability, and validated process parameters.
Decimal's 20.EX is specifically described as designed to support EU-GMP facility compliance — a precise, defensible claim that the machine's design supports compliance rather than that the machine itself is certified. The 30.TF Dual-Stage can be crafted to adhere to EU-GMP standards on request. When a vendor claims GMP compatibility, ask them to specify which GMP standard (FDA 21 CFR Part 211, EU-GMP Annex 1, Health Canada GPP, etc.), what construction features support that standard, and whether they can provide material traceability documentation (mill certificates for stainless, material data sheets for gaskets and seals) as part of the equipment package.
Buying extraction equipment well means gathering specific, documented answers to each of these questions before a purchase order is signed — not during installation or commissioning. A vendor who is reluctant to provide written specifications, third-party inspection records, or clear warranty language before the sale is unlikely to become more forthcoming after your money has changed hands. Request a quote to begin a conversation with Decimal's engineering team, or speak with an engineer if you have specific compliance, throughput, or configuration questions about any system in our line.
Frequently Asked Questions
What certifications should hydrocarbon extraction equipment carry?
At minimum, a hydrocarbon extraction system operating with butane, propane, or isobutane should carry C1D1 (Class I, Division 1) ratings on all electrical components in the extraction zone, pressure safety system documentation such as PSI review, and ASME code construction on pressure-bearing vessels where required by your jurisdiction. Depending on your facility's regulatory environment, you may also need documentation supporting GMP-compatible construction. Always verify that the ratings apply to the specific components in the classified area, not just the system as a whole, since different components may carry different ratings.
What is the difference between ASME code construction and a UL listing for extraction equipment?
ASME code construction means the pressure vessel was designed and fabricated according to the ASME Boiler and Pressure Vessel Code and inspected by an ASME-accredited third-party inspector, resulting in a U-stamp on the vessel. A UL listing or UL-recognized designation applies to electrical components and panels, confirming they meet specific UL safety standards for construction and performance. These are separate evaluation systems covering different parts of the equipment: ASME governs pressure-bearing components while UL governs electrical safety. A complete, well-documented extraction system typically needs documentation from both.
How do I evaluate a vendor's throughput claims for extraction equipment?
Ask for a signed engineering document — a cutsheet, specification sheet, or formal manual — that states throughput as a specific figure with defined operating conditions, not just a marketing headline. Meaningful throughput specifications state per-run capacity, cycle time, and per-shift throughput separately, and they acknowledge the variables that affect real-world performance, such as solvent blend, operating temperature, and solvent-to-biomass ratio. If a vendor cannot provide a signed document with sourced specifications, treat their throughput claims as unverified estimates rather than engineering commitments.
What warranty terms are typical for commercial extraction equipment, and what should I watch for?
Many equipment manufacturers offer tiered warranty coverage: a longer-term or lifetime warranty on the primary stainless steel construction against corrosion and pitting, and a shorter term — commonly one year — on wear items such as gauges, gaskets, valves, and seals. Watch for warranties that do not clearly define which components fall under which coverage tier, that require the buyer to ship the equipment to the manufacturer at their own expense for warranty service, or that include broad voiding language around operator error or consumable maintenance. Get the full warranty document in writing before signing the purchase order, and make sure you understand exactly what is excluded.
Does buying from a domestic manufacturer matter for compliance and support?
Domestic manufacturing often means faster access to replacement parts, English-language engineering documentation with traceable material certifications, and a support team in the same time zone as your operation. For regulated industries — pharmaceutical, food-grade, GMP-oriented cannabis — material traceability (mill certificates for stainless steel, material data sheets for gaskets and seals) is frequently a compliance requirement, and that documentation is more consistently available from manufacturers who control their own supply chain. If you are buying for a GMP or pharma application, verify that the vendor can provide full material traceability documentation regardless of where the equipment is manufactured.