Compositions

What are Compositions?

Compositions in TPD PRO represent complete e-liquid formulas made up of multiple Ingredients. Each Composition must account for 100% of the product's contents and is a required element in product Submissions.

Compositions are reusable, meaning you can create a formula once and assign it to multiple products or Presentations across various Submissions.

Why Compositions Matter

• Required for every product that contains e-liquid

• Enable accurate calculation of ingredient quantities

• Ensure consistency across product variants

• Serve as the basis for toxicological and emission reporting

How to Create a Composition

1. Navigate to Compositions in the left-hand menu

2. Click “Create”

3. Fill in the following:

   • Title — A clear, descriptive title (e.g., “Mint Base 20mg”)

   • Category (madatory) — Organize Compositions by type or use case

   • Manufacturer - for easier navigation and filtering - is not required by eTrustex won’t be shown in XML file

   • UFI Code - UFI code of the composition (more about UFI codes - link)

   • Nicotine level - choose nicotine level

   • Density - you can use ~1.10

   • Save

4. After save you will be redirecting to page choose ingredients from the list

   • Choose from existing Ingredients

   • Define the percentage of each ingredient

   • Press Add

5. After reiching 100% - means that composition is finished and can be used for submissions

✅ You can later edit the Composition or duplicate it to create a variant.

Reusability Across Submissions

• A Composition can be used in multiple Submissions and Presentations

• TPD PRO will automatically calculate the actual amount of each ingredient based on:

  • Product volume (e.g., 2ml, 10ml)

  • Product density

  • Number of units per Presentation

Auto-Calculation

When a Composition is linked to a a Submission:

• TPD PRO auto-generates the precise quantities of each ingredient in milligrams

• These amounts are used for ingredient declarations in the EU-CEG XML

Composition Categories

To help organize complex formula libraries, you can assign Categories to Compositions (e.g., “Nicotine-Free Bases”, “Salt Formulas”, “2025 Recipes”). This allows for easier filtering and project management.

Best Practices

• Use clear and consistent naming (e.g., "Fruit Blend 12mg Base")

• Always verify that the total composition equals 100%

• Keep a master set of base formulas and clone them for variations

• Use Composition Categories to separate test batches from production-ready ones