How Celtic Vapours E-Liquid Is Made
Celtic Vapours has been manufacturing e-liquid in Swansea, South Wales since 2011. This guide explains the full production process from ingredient sourcing to bottling and MHRA registration.
Quick answer: Celtic Vapours e-liquid is made in Swansea, Wales using a clean room production environment. Pharmaceutical-grade PG, VG and nicotine are sourced from certified UK and European suppliers. EU-grade flavour concentrates are weighed precisely, mixed with the base and nicotine, quality tested for nicotine concentration and flavour consistency, then bottled with child-resistant caps and TRPR-compliant labels. Every product is registered with the MHRA before going on sale. Batch traceability is maintained throughout.
Why Manufacturing Process Matters for E-Liquid Quality
The quality of an e-liquid is determined not only by its ingredients but by how those ingredients are combined and under what conditions. A premium PG, VG and nicotine blend produced in a poorly controlled environment can still result in an inconsistent product. Contamination, inaccurate weighing and inadequate mixing all affect the final flavour, nicotine delivery and batch-to-batch consistency.
For vapers who have found a flavour they enjoy and want to be confident that every bottle they order will taste the same, the manufacturing process is directly relevant. Celtic Vapours produces in-house in Swansea, giving the brand full control over every stage of production rather than outsourcing blending to a contract manufacturer where standards may vary.
The Celtic Vapours Manufacturing Process Step by Step
Ingredient Sourcing and Verification
The production of every Celtic Vapours e-liquid begins with sourcing. Propylene glycol (PG) and vegetable glycerine (VG) are procured at pharmaceutical grade from certified UK and European suppliers. This grade level is significantly purer than food-grade equivalents and is the same standard used in pharmaceutical products and NHS nicotine replacement therapies. Nicotine is sourced to the same pharmaceutical standard. EU-grade flavour concentrates, the same type of food-safe flavourings used in processed foods, complete the ingredient set. Each incoming batch of raw materials is verified for purity and compliance before it enters the production environment.
Clean Room Production Environment
All mixing and production takes place within a controlled clean room environment. A clean room is a manufacturing space where airborne particulates, contaminants and temperature fluctuations are controlled to strict limits. Production staff within the clean room wear protective equipment including masks, lab coats and hair covers throughout the process to prevent any risk of contamination. The clean room environment is a legal requirement under UK TPD regulations for e-liquid manufacturers and ensures that each batch is produced under the same controlled conditions regardless of external factors.
Precise Weighing to Recipe
Each Celtic Vapours flavour has a specific formulation or recipe that defines the exact proportions of PG, VG, flavour concentrate and nicotine. Ingredients are weighed precisely to this recipe for every batch using calibrated equipment. The ratio of PG to VG (60:40 across the standard Celtic Vapours range) determines the physical properties of the finished liquid, its viscosity, vapour production and throat hit character. The flavour concentrate percentage determines flavour intensity. Precise weighing is essential to ensure that the flavour, nicotine delivery and physical properties of a bottle are consistent with the previous batch and with every bottle that follows.
Mixing
The weighed ingredients are combined during the mixing stage. Mixing ensures that the flavour concentrates are fully dissolved and evenly distributed throughout the PG and VG base and that nicotine is homogeneously incorporated throughout the batch. An uneven mix can result in inconsistent nicotine delivery or flavour variation between different parts of the same batch. Adequate mixing time and method are important variables that experienced in-house manufacturers like Celtic Vapours control directly, whereas brands using contract manufacturers may have less oversight at this stage.
Quality Testing
Before any batch is bottled, it undergoes quality checks. These include verification of nicotine concentration to confirm the batch matches the stated mg/ml on the label, flavour assessment to confirm the profile matches the approved standard for that flavour. Physical checks on viscosity and clarity are also completed. Celtic Vapours works with independent laboratories and toxicologists to ensure products meet the standards set by the TRPR and go beyond the minimum requirements. Emissions testing, which heats the liquid to vaping temperature and analyses the compounds in the vapour, is also required for MHRA registration and forms part of the regulatory compliance process.
Bottling and Labelling
Approved batches are filled into individual 10ml bottles. Child-resistant caps are fitted as required by UK TRPR regulations. TRPR-compliant labels are applied detailing the flavour name, nicotine strength and type, ingredients list, batch number, best-before date, health warnings and MHRA registration reference. The batch number provides full traceability from the finished product back through to the specific raw material batches used in its production. This traceability is a legal requirement under UK TRPR and is also a quality assurance measure that allows any issue to be investigated and resolved swiftly.
MHRA Registration
Before any Celtic Vapours product can be placed on sale in the UK, it must be registered with the MHRA (Medicines and Healthcare products Regulatory Agency) under the TRPR notification system. This notification requires submission of full ingredient details, emissions testing data and production information. The approval process takes up to six months from first submission. Only products that have completed this process and received confirmation of registration can be sold legally in the UK. Every flavour and nicotine strength variant in the Celtic Vapours range has its own individual MHRA registration.
What Pharmaceutical-Grade Ingredients Mean for You
The term pharmaceutical grade describes a level of purity that exceeds the food-grade standard applied to most flavouring and carrier ingredients in other industries. Pharmaceutical-grade PG and VG are the same materials used in licensed medicines, asthma inhalers and NHS nicotine replacement products. They are tested to extremely tight purity limits for contaminants, water content and particulate matter.
The practical benefit for vapers is consistency and safety. A pharmaceutical-grade PG sourced from a certified European supplier will behave the same way in every batch. The same flavour will taste the same in bottle three as it did in bottle one. The nicotine concentration will match the label. This predictability is what distinguishes in-house manufacturers like Celtic Vapours from brands that source their finished product from third-party blenders where ingredient traceability and purity may be harder to verify.
Buy Celtic Vapours E-Liquid Made in Swansea
Pharmaceutical-grade ingredients. Clean room production. MHRA registered. Made in Wales since 2011.
Frequently Asked Questions
Celtic Vapours e-liquid is manufactured at the brand's headquarters in Swansea, South Wales. The brand has been producing in Swansea since 2011 and manufactures its entire own-brand e-liquid range in-house rather than using contract blending facilities elsewhere.
All Celtic Vapours e-liquids contain four main ingredients: pharmaceutical-grade propylene glycol (PG), pharmaceutical-grade vegetable glycerine (VG), EU-grade food-safe flavour concentrates and pharmaceutical-grade nicotine where applicable. Nicotine-free (0mg) variants do not contain nicotine. No diacetyl, acetyl propionyl or other banned substances are used in Celtic Vapours products.
Yes. Every flavour and nicotine strength variant in the Celtic Vapours own-brand range is registered with the MHRA under the UK TRPR notification system. This registration requires submission of full ingredient data, emissions testing results and production information and must be completed before any product can be sold legally in the UK.
The standard Celtic Vapours own-brand 10ml range uses a 60:40 PG:VG ratio. This prioritises flavour intensity and throat hit over cloud production and makes the liquid suitable for MTL pod kits, vape pens and standard starter kits. A High VG variant is also available for sub-ohm device users who want more vapour volume.
Batch consistency is maintained through precise recipe weighing, controlled clean room production conditions, quality testing of each batch before bottling and full batch traceability from raw material to finished product. Every bottle carries a batch number that allows any product to be traced back through the production record to the specific raw material sources used in its manufacture.
Explore the Celtic Vapours 10ml E-Liquid Guide
Our hub covers nicotine strength guidance, flavour picks, storage advice and full TRPR compliance information.