Module 7 – Storage & Travel
Part of the Purus Lumina Device Care Education Programme
A clean device stored incorrectly is no longer a clean device.
The cleaning and maintenance protocol documented in Modules 2 and 3 establishes the standard for device care during active use. This module addresses what happens between sessions — how the device and its accessories should be stored, and what the correct approach is when the device must be transported.
Storage and travel are not peripheral considerations. A device that has been correctly cleaned and then stored in a contaminated environment, an unsealed bag, or conditions of excessive humidity has been compromised. The cleaning was not wasted — but its effect has been partially or fully undone. This module documents the standard that preserves it.
Storage between sessions
The device: After cleaning and full drying, the device should be stored in a clean, sealed case or container. The case supplied by the manufacturer is appropriate if it is itself kept clean. A fabric pouch that is not regularly cleaned is not appropriate — fabric retains particulate, moisture, and odour, and transfers all three to the device surface and mouthpiece.
Temperature: Store the device at ambient room temperature. Do not store in direct sunlight, near a heat source, or in a vehicle during warm weather. Elevated temperatures accelerate degradation of seals, O-rings, and the cooling unit. Do not store in a cold environment — condensation on cold components introduces moisture into the device before the session begins.
Humidity: The UK's ambient humidity — particularly in older housing stock, in bathrooms, and in kitchens — is a relevant variable. Do not store the device in a bathroom or kitchen. Store in a dry, ventilated space. If the storage environment is consistently humid, a small silica gel desiccant packet in the storage case is appropriate. Replace the desiccant packet regularly.
Light exposure: Botanical material stored in dosing capsules is sensitive to light. UV exposure degrades cannabinoids and terpenes. Store pre-loaded capsules in an opaque, sealed container. Do not store capsules in a clear container on a surface exposed to natural or artificial light.
The mouthpiece: The mouthpiece is the component most exposed to the external environment during storage. If the device is stored without a case, the mouthpiece is open to airborne particulate, contact contamination, and ambient moisture. Store with the mouthpiece covered or capped at all times when not in use.
Long-term storage
Long-term storage applies when the device will not be used for an extended period — during a hospital admission, a period of travel where the device cannot be taken, or a planned break in use.
Before long-term storage: The device must be fully cleaned and fully dried before being stored for any extended period. Residue left in the device during long-term storage degrades, hardens, and becomes significantly more difficult to remove. Moisture trapped in the device during storage creates conditions for microbial growth. A device retrieved from long-term storage that was not cleaned before storage should be treated as contaminated and cleaned in full before use.
Storage conditions: The same temperature and humidity standards apply for long-term storage. A sealed, clean case in a dry, dark, ambient-temperature environment is the correct standard. Check the storage environment periodically if the device will be stored for more than a few weeks.
Before returning to use: After any extended period of storage, inspect all components before reassembly. Check seals and O-rings for degradation. Check screens for residue that may have hardened. Clean any component that shows residue before the first session after storage.
Travelling with a prescribed device
Patients prescribed botanical medicine in the United Kingdom are prescribed a CBPM by a specialist clinician. The device used to administer it is a classified medical device. Travelling with both the prescription and the device requires preparation that goes beyond what a recreational user would consider.
Documentation to carry: Patients travelling with a prescribed CBPM should carry their prescription documentation, their patient card if issued by their clinic, and any supporting documentation from their prescriber. This applies to all travel — domestic and international. A patient stopped by police or border officials with a CBPM and no documentation is in a materially different position to one who can produce a valid prescription.
Domestic travel within the UK: There is no legal restriction on travelling within the UK with a validly prescribed CBPM. The prescription is the legal authority. Carry it. The device is a classified medical instrument — treat it as such in terms of how it is packed and presented.
The device during travel: The device should be stored in its case, clean and fully dried, with the CBPM stored separately in its original prescription packaging. Do not store the device and the CBPM together in a way that could be interpreted as concealment. Clarity of presentation is in the patient's interest.
International travel: International travel with a prescribed CBPM is outside the scope of this curriculum. The legal position varies significantly by jurisdiction — cannabis-based products that are legally prescribed in the UK may be illegal to possess in the destination country regardless of the UK prescription. Patients considering international travel with a CBPM must seek specific legal advice for their destination before travelling. This curriculum does not provide that advice and cannot be relied upon for international travel decisions.
In plain terms
Clean the device. Dry it fully. Store it in a sealed case, away from heat, light, and humidity. Cover the mouthpiece. Keep the prescription documentation with you when you travel. If you are going abroad, get legal advice specific to your destination — do not assume your UK prescription protects you internationally.
Storage is not the end of the protocol. It is part of it.
Notice of Intent
This curriculum has been submitted to the MHRA, Home Office, NHS England, NICE, the Care Quality Commission, relevant parliamentary and clinical bodies, and device manufacturers operating within the UK prescribed CBPM pathway, as a formal educational contribution to a documented gap in patient care. It is published in perpetuity as a matter of public record. Purus Lumina reserves all rights to the curriculum structure, content, and methodology.
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Module 7 is part of the Purus Lumina Device Care Curriculum — the world's first documented device care education programme for patients prescribed botanical medicine. Published as a matter of public record. Preserved in perpetuity.
This module was published on 4 July 2026 and exists in perpetuity as part of the Purus Lumina Device Care Curriculum — the world's first documented device care education programme for patients prescribed botanical medicine. It will not be removed.
Glenn Hailes · Director · Purus Lumina Ltd · 3rd Floor, 86–90 Paul Street · London EC2A 4NE · United Kingdom · Registered in England and Wales