Purpose: the vocabulary of cannabis device safety. Most of these terms don’t exist in the current literature, and that absence is itself the problem — you can’t regulate, peer-review, or certify what you can’t name. The Institute coins, defines, and stewards this terminology so that the field has shared language to build on.
Status: founding draft. Each entry is open for review and refinement. Entries will be cited in CDSI papers and protocols by their coinage tag (e.g., “LSO testing per CDSI Lexicon §3.1”).
Conventions: - Coined — first published use traceable to CDSI; original to this institute - Adopted — borrowed from an adjacent field (food science, indoor air, breath analysis); CDSI specifies its meaning for this domain - Reframed — existing word, but our usage narrows or sharpens the meaning
1. Foundational concepts
1.1 Hardware-side safety [reframed]
The category of cannabis consumer risk that originates in the device — the heater, the chamber, the materials, the geometry — as distinguished from concentrate-side safety (pesticide residue, microbial contamination, residual solvents, adulterants in the cannabis material itself). Existing state cannabis regulation almost exclusively addresses concentrate-side safety. CDSI exists because hardware-side safety has no institutional home.
1.2 Concentrate-side safety [reframed]
The category of risk originating in the cannabis material loaded into a device. Already extensively regulated by state cannabis bureaus. Mentioned in CDSI work primarily to clarify what we are not duplicating.
1.3 The Hardware Vacuum [coined]
The structural absence of a federal or state safety standards body for cannabis consumption hardware. A descriptive name for the gap CDSI exists to fill. Distinct from “regulatory gap” because it is institutional, not legislative — even if Congress passed a hardware safety statute tomorrow, no body currently exists to enforce or interpret it.
1.4 Builder-grade standard [coined]
A safety standard co-authored by the engineers, machinists, and ceramicists who build the hardware in question, then peer-reviewed by chemists, toxicologists, and materials scientists. Distinguished from academic-grade standards (no builder input) and trade-association standards (no independent review). The CDSI signature methodology.
2. Testing concepts
2.1 Loaded-state off-gas (LSO) [coined]
The thermal volatilome of a vaporizer operated with cannabis concentrate present in the chamber. Distinguished from dry-fire signature (§2.2). Most third-party testing of cannabis hardware to date has been dry-fire only — testing the empty heater. LSO testing reveals interactions between the heater material and the concentrate matrix that dry-fire cannot see.
2.2 Dry-fire signature [coined]
The characteristic off-gas profile of a heating element operated empty, at typical operating temperature. A material-only fingerprint. Useful as a baseline against which LSO results are compared. Some devices produce a worse dry-fire signature than LSO signature, which is itself a finding.
2.3 Thermal speciation profile (TSP) [coined]
The temperature-resolved set of compounds released by a device under load — i.e., what compounds appear at 350 °F vs. 480 °F vs. 650 °F. A device that passes acceptance criteria at one temperature may fail at another. TSP testing produces a curve, not a single value. CDSI-001 protocol specifies a three-temperature TSP minimum.
2.4 Heater-matrix coupling [coined]
The interaction between a specific heating-element material (ceramic, quartz, kanthal, titanium) and a specific concentrate matrix (distillate, live resin, rosin). Coupling effects mean that a heater certified safe with one matrix may not be safe with another. This is why CDSI-001 requires three matrices per device.
2.5 Pyrolytic reservoir effect [coined]
The phenomenon where residual concentrate, charred onto the heating element from prior sessions, re-cooks at higher temperatures during subsequent draws and contributes a measurably different off-gas profile from a fresh load. Reservoir effects are why “burn-off” cleaning cycles matter, and why session-cycled hardware needs distinct testing from out-of-box hardware.
2.6 Combined-loading testing [coined]
A testing protocol that exercises a single device across multiple concentrate matrices in sequence (or across replicate units, one per matrix). Distinguished from single-matrix testing, which is the industry default. Combined-loading is harder, slower, and more expensive — and is the only way to reveal coupling and reservoir effects.
2.7 Volatilome [adopted]
The full set of volatile and semi-volatile compounds released by a system. Borrowed from food science and breath analysis. CDSI usage: the device volatilome is the totality of compounds released by a vaporizer under specified operating conditions, measured by GC-MS and ICP-MS jointly.
3. Standards and certification concepts
3.1 Pay-the-lab discipline [coined]
The structural norm that manufacturers pay testing fees but never buy outcomes. Operationally enforced by three rules: (a) testing fee is published and uniform, (b) every report is published regardless of pass/fail, (c) manufacturer responses are appended verbatim to the public report. The discipline is what distinguishes a credible testing institute from a pay-to-pass certifier.
3.2 Provenance certification [coined]
Certification that includes traceable disclosure of who performed the test, when, on what unit, with what concentrate, under what protocol — in addition to the pass/fail determination. Most certification marks today are pass/fail bumper stickers; provenance certification is the test report itself, summarized into a mark.
3.3 Open-data certification [coined]
Certification conditional on the manufacturer’s agreement that all raw data, instrument logs, and chain-of-custody records will be public. The CDSI Tier 2 mark requires open-data; closed-data testing exists in the industry but is not certifiable by CDSI.
3.4 Shadow standard [coined]
A de facto standard with no formal standards body behind it. The current state of most cannabis hardware safety claims. “FDA-grade ceramic” is a shadow standard; “medical-grade stainless” is a shadow standard. Shadow standards proliferate in any industry where the institutional vacuum (§1.3) is unfilled.
3.5 Tier-graded certification [coined]
A certification system with multiple levels of rigor, each clearly labeled. CDSI’s three tiers: - Tier 1: Reported — manufacturer submitted device, results published, may have failed - Tier 2: Certified — passed all current acceptance criteria - Tier 3: Gold Standard — passed Tier 2 plus committed to ongoing batch testing and full materials disclosure
Distinguished from binary certification (the typical bumper sticker), which collapses meaningful gradations into yes/no.
4. Failure-mode concepts
4.1 Coil failure [reframed]
Mechanical or electrical failure of the heating element. Already a term in vaping engineering. CDSI usage adds: any mode of coil failure that produces a non-baseline off-gas profile — not just “doesn’t heat” failures.
4.2 Glaze leach [coined]
The migration of trace metals or unreacted glaze constituents from a ceramic coating into the gas stream during operation. The 2021 V5 ROHS analysis was a glaze-leach investigation. Now a generalizable category.
4.3 Adulterant amplification [coined]
The increase in toxicity profile that occurs when an adulterant in the concentrate (vitamin E acetate, propylene glycol, polyethylene glycol, untested terpene additive) reacts with hot heater material at operating temperature. Distinct from the adulterant itself — adulterant amplification is the device-mediated harm.
4.4 Thermal runaway (cannabis-specific) [reframed]
In battery engineering, thermal runaway has a specific meaning. Cannabis-hardware thermal runaway is a separate phenomenon: the heating element exceeding setpoint by enough to alter the off-gas profile catastrophically (overshoot of 50 °F+ at high duty cycle). A device that runs away under load may pass dry-fire testing.
4.5 Session drift [coined]
The progressive change in off-gas profile across a single user session as the device, concentrate, and chamber heat-soak. Most testing measures the first few draws; session drift may not appear until draw 15-20.
5. Institutional concepts
5.1 Builders, not lawyers [coined — repeatable line]
CDSI’s positioning shorthand: standards written by people who’ve built the hardware (engineers, ceramicists, chemists working in industry) rather than by lawyers, lobbyists, or trade-association staff. The phrase is intentionally sharp; it signals which side of an institutional choice CDSI sits on.
5.2 Pay the lab, not pay to pass [coined — repeatable line]
The two-clause expression of pay-the-lab discipline (§3.1). Used as a one-line description of CDSI’s funding and reporting model.
5.3 The Founding Artifact [reframed]
The 2016 ALS Environmental off-gas report on the Divine Tribe V3 (service request P1605022). Used in CDSI documentation as both a literal reference and a methodological seed. Every CDSI protocol cites it.
5.4 Humboldt model [coined]
The institutional pattern of: a builder-led applied-testing institute partnered with a university research institute via formal MOU, headquartered in the same town, jointly hosting an annual symposium. Modeled on the Cal Poly Humboldt — CDSI partnership. Available for replication in other regions; CDSI does not seek to be the only such institute.
6. Reserved / under development
The following concepts are in active development and not yet published. Listed here to claim coinage and prevent re-invention.
- Volatilome divergence index (VDI) — a quantitative metric for how different two devices’ off-gas profiles are
- Material disclosure tier — the depth of bill-of-materials transparency a manufacturer commits to
- Closed-loop certification — certification whose criteria are themselves open-source and forkable
- Chemovar-aware testing — testing protocols that account for terpene profile differences across cultivars
Citation format
Reference entries in CDSI papers as: (CDSI Lexicon §X.Y, v. 2026-04). The version date is the lexicon’s overall draft date, not the entry date. Older usages remain valid; newer revisions add or refine without invalidating prior citations.
Coinage is consequential. Whoever names the field shapes the questions the field can ask. CDSI takes that responsibility seriously.
— Matt Macosko, Founder 2026-04-24