Unleash the Flavor Revolution


Welcome to First Five Labs, the cornerstone of innovation and excellence in the e-liquid industry. As a pioneering force, we stand proudly as your comprehensive solution provider, offering a diverse array of services to propel your e-liquid venture to unparalleled success.

Unveiling Possibilities through Manufacturing

At First Five Labs, manufacturing is not just a process; it’s a journey of discovery. Our Research and Development division is dedicated to pushing the boundaries, crafting unique e-liquid recipes that are destined to become iconic brands on the market. Our commitment to excellence is evident in every stage, from concept to creation, ensuring that your products not only meet but exceed the highest standards.

Elevating E-Liquid Production

E-liquid production is an art and a science, and we’ve mastered both. Our state-of-the-art production facilities adhere to the most rigorous quality standards, guaranteeing that each bottle of e-liquid is a masterpiece. From meticulously measured ingredients to precision labeling and filling, our process reflects a commitment to perfection that is second to none.

Empowering Partners through OEM Production

We understand that your vision is unique, and we’re here to turn it into reality. As your dedicated OEM partner, we can transform your concepts into an entire line of exceptional products. From formulation to packaging, our expertise ensures that every aspect of your OEM line is crafted with precision and care, fostering a seamless extension of your brand.

Services that Transcend Expectations

Our commitment to your success extends beyond manufacturing. We recognize the intricate needs of the e-liquid landscape, and our services encompass every crucial aspect. Our cutting-edge laboratories conduct thorough tests, guaranteeing the safety and quality of your products. Our regulatory consultations guide you through the complex maze of compliance. E-liquid registration services streamline the process, while our in-house graphic design and branding elevate your identity, ensuring a lasting impression.

Crafting the Future of E-Liquid

In an industry marked by evolution, we lead the way. Our dedication to innovation, combined with unwavering adherence to high-quality principles, propels First Five Labs to the forefront of the e-liquid landscape. We don’t just manufacture; we pioneer. We don’t just offer services; we create partnerships that redefine success.

At First Five Labs, the journey from concept to market dominance is illuminated by our expertise. Join us in shaping the future of the e-liquid industry. Contact us today to embark on a transformative collaboration that will set new standards and elevate your brand to unprecedented heights.

Get in touch



Positioned as a comprehensive solutions provider in the e-liquid industry, we offer a holistic array of services that encompass the entire spectrum of your requirements. Our capabilities extend to facilitating the production of private label e-liquids, accompanied by an exhaustive suite of services necessary for a seamless introduction of a new e-liquid brand to the market:

  • RESEARCH & DEVELOPMENT –  We delve into robust research and development processes, meticulously crafting e-liquid formulations that embody both creativity and quality.
  • E-LIQUID PRODUCTION (BULK)Our production capabilities span the production of e-liquids on a large scale, ensuring a consistent and efficient supply to meet market demands.
  • LABELLING & FILLING (IN BOTTLES)With precision, we undertake the critical stages of labeling and filling, ensuring that each bottle is accurately filled and impeccably labeled in alignment with your brand identity.

Our comprehensive approach ensures that your journey from conceptualization to market presence is streamlined and well-supported at every stage, fostering your success within the dynamic e-liquid industry.


The formulation of an e-liquid recipe stands as a paramount determinant in the triumph of a brand or product within the market. Subtle intricacies within the recipe wield substantial influence over the flavor experience encountered by the end consumer. This process of recipe development concurrently plays a pivotal role in defining the product’s pricing structure.

The intricacies woven into the recipe development process reverberate through the entire consumer journey, fundamentally shaping taste perceptions and determining market reception. These multifaceted considerations underscore the profound significance of crafting an e-liquid recipe that not only captures the essence of the brand but also resonates harmoniously with the discerning palate of the customer. Equally, this journey of recipe development holds the key to cost considerations, as each ingredient and formulation choice culminate in the final product’s pricing structure.

Our product development team has experience in the process of creating a brand as well as other factors so that we can create a successful product together based on your guidance. We will help you in the process of designing and creating your new line of delicious e-liquids of the highest quality.

Our flavor development team is experienced in creating award-winning recipes. We will help you realize your new line of delicious e-liquids of the highest quality. We can advise you on the recipes you want to modify, use our own raw materials in our production, or we can order raw materials (concentrates, additives) from different suppliers – all in order to meet your expectations and the expectations of your customers.


Equipped with a range of both automatic and semi-automatic machinery, our production facility is proficient in filling, dosing, labeling, and sealing processes. Demonstrating our capability, our weekly production capacity exceeds 50,000 bottles.

Noteworthy is our steadfast commitment to manufacturing finished e-liquids under stringent conditions in alignment with GMP standards. 

Central to our production philosophy are precision and sterility, forming the bedrock of our operations. Additionally, each batch of products departing our facility undergoes a comprehensive double-check procedure. This meticulous step ensures not only the utmost customer satisfaction but also guarantees the highest quality standards in the execution of our responsibilities.


Our production facility is equipped with automatic and semi-automatic filling, dosing, labeling and sealing machines
Our production capacity exceeds 25,000 bottles per week
The production of finished e-liquids at First Five Labs always takes place under strict conditions imposed by ISO standards

Although we are not food manufacturers, we apply the strictest requirements applied in the food industry, such as the HCCAP standard (GMP/GHP)
The most important things in our production are precision and sterility
What’s more, every batch of product that leaves our facility is double-checked to ensure that the customer is completely satisfied, and that our job is done to the highest quality.


  • We use only raw materials of the highest quality
  • Our nicotine PureNic 99+ along with PG and VG meet European and US pharmacopeia standards (EP, USP)
  • Every batch of PureNic 99+ is examined in accredited laboratories and receives a certificate of quality
  • Each of the semi-finished products comes from proven, reliable suppliers, together with Material Safety Data Sheet (MSDS) and product data-sheet
  • The machines and equipment used in the production process are certified to ensure the highest quality of production
  • The reliability of measuring instruments is verified by calibration certificates
  • During the production cycle we are continuously monitoring both the safety of our products and the safety of our employees

The labelling and bottling stages are pivotal components of the e-liquid manufacturing process. At First Five Labs, we’ve established an internal checklist that serves as a uniform blueprint for all our manufacturing procedures across our product range. Notably, our quality standards transcend the regulatory mandates, underscoring our commitment to excellence.

This commitment to standardization empowers us with the flexibility necessary to address a diverse array of requirements. Drawing from our extensive experience, we possess the credibility to swiftly and effectively meet these demands, all while adhering to the highest industry benchmarks. Our efficiency in achieving these objectives underscores our dedication to delivering exceptional results in the shortest timeframe and optimal manner possible.



We specialize in producing private label e-liquids and providing a comprehensive suite of services necessary to successfully launch a new e-liquid brand in the market. Our offerings encompass:


We excel in coordinating and conducting comprehensive liquid and emission testing, aimed at evaluating conformity and ensuring the safety of our products. Our testing protocols encompass:

  • Determination of Heavy Metals: Rigorous analysis to detect and quantify heavy metals, ensuring compliance with safety standards.
  • Volatile Organic Compounds (VOCs) Determination: Thorough assessment of volatile organic compounds content, confirming adherence to established safety guidelines.
  • Aldehydes and Ketones Determination: Precise measurement of aldehydes and ketones content, pivotal for evaluating the product’s safety profile.
  • Nicotine, Propylene Glycol, and Glycerin Quantification: Accurate quantification of nicotine, propylene glycol, and glycerin concentrations, essential for verifying product composition and ensuring regulatory compliance.

Our rigorous testing practices underscore our unwavering commitment to delivering e-liquid products that meet stringent safety and quality standards.


We diligently monitor and stay abreast of all regulatory shifts within the global e-cigarette sector. As a pioneering entity deeply connected to this industry, we are committed to promptly implementing any requisite modifications. Our unique position empowers us to provide clients with informed insights and guidance.

Our wealth of expertise enables us to offer thorough consultations to our clients. We extend our knowledge to them, ensuring they are well-informed about the latest developments and compliance requirements within the e-cigarette landscape.

Furthermore, we extend our support to clients by facilitating consultations and registrations pertinent to key chemical regulations. Specifically, we assist with the complex processes involved in REACH, CLP, and UFI compliance. Our aim is to streamline these regulatory endeavors, allowing our clients to navigate these frameworks seamlessly while focusing on their core business operations.


We offer a comprehensive service of TPD product registration and guidance throughout the whole process, as well as customer care after the process of registration.

Our highly skilled TPD Specialists have conducted several hundreds of successful TPD registration in every European country.

TPD compliance team have the necessary experience with foreign authorities and their requirements and will:

  • help you to determine any gaps in documentation
  • ensure that your products meet all requirements
  • help you to register your products in all EU countries

With us, you will have the guarantee that we will guide you through the process easily and without any unnecessary problems.

Each European Union country has adapted TPD provisions to their internal legislation. Some legislators have created a law that is much more strict than the TPD. The complexity of the regulations for each country can be overwhelming. However, First Five Labs helps manufacturers who want to register their e-liquids in several countries.


The initial point of contact for a potential buyer is often the packaging, which immediately captures their attention prior to experiencing the product within. The brand itself serves as a representation of the intended essence of the product line being introduced to the market.

During this pivotal stage, careful consideration is essential regarding the values you intend to convey through the packaging. This entails thoughtful contemplation about the ideals and principles you aim to communicate. Whether your goal involves presenting a collection of straightforward and approachable flavors for a mass audience, or whether you aspire to establish a premium brand centered around sophistication and exclusivity, the packaging should effectively embody these chosen values.


We provide a comprehensive range of OEM (private label) solutions tailored to your needs, encompassing the following options:

  • OEM BASES – packaged in 250 ml, 500 ml and 1000 ml containers
  • OEM E-LIQUIDS – available in 10 ml, 30 ml, 60ml and 120 ml packaging
  • OEM LONGFILL & SHORTFILL –  designed for 0 mg/ml nicotine content and offered in retail packaging

In the dynamic and rapidly evolving e-liquid market, OEM liquids have become instrumental in shaping the vaping industry by providing brands with customizable solutions they want to offer to the end user.
From standard nicotine options to different base sizes to a range of packaging options and from nicotine-free alternatives to attractive retail packaging, these solutions empower brands to create unique vaping experiences that resonate with a wide range of consumers. As the industry continues to grow and adapt, OEMs are likely to remain at the forefront of shaping its future.

We offer a selection of OEM bases, available in three sizes:

  • 250 ml
  • 500 ml
  • 1000 ml

These bases serve as the basis for making e-liquids with different flavours and ratios of PG (propylene glycol) and VG (vegetable glycerin). A range of basic sizes allows brands to efficiently scale their production while ensuring consistent quality.

Diversity is the spice of life. In the world of vaping it is no different. OEMs offer a comprehensive range of e-liquid packaging options to meet different user preferences and usage patterns. We manufacture e-liquids available in 10ml, 30ml, 60ml and 120ml packs, allowing brands to offer suitable choices for casual vapers and enthusiasts who prefer larger volumes. This flexibility ensures that brands can effectively target different market targets.

For those seeking the sensory pleasures of nicotine-free vaping, OEMs offer specialized solutions in the form of nicotine-free e-liquids. Brands can opt for Shortfill or Longfill pack options, carefully designed to accommodate 0 mg/ml nicotine. Short-fill bottles are partially filled with e-liquid, leaving room for users to add their desired nicotine shots if desired. Longfill bottles, on the other hand, contain a concentrated mixture of e-liquid and are usually diluted with a base before use. These nicotine-free alternatives empower brands to cater to a wider audience, including those who have embraced vaping as a lifestyle choice rather than a nicotine delivery mechanism.



Feel free to use this form to contact us if you  have a question for us.


    Prvi pet j.d.o.o.
    Oporovečka 15,
    10 040 Zagreb,

    EMAIL: info@first5labs.eu
    WEB: www.first5labs.eu

    VAT: HR62921711503
    OIB: 62921711503
    MB: 04565215

    IBAN: HR3224020061100789208