Term: mixing ratio

In painting and coatings, the "mixing ratio" refers to the proportion of different components that must be combined to create a usable product. This is commonly used when working with two-pack (2K) systems, such as epoxy paints, polyurethane coatings, or other multi-component products.

Example:

A mixing ratio might be expressed as:

• 4:1 – meaning 4 parts base (Part A) to 1 part hardener (Part B)
• 2:1:10% – meaning 2 parts base, 1 part hardener, and 10% thinner

Importance:

• Ensures proper chemical reaction (e.g., curing or hardening)
• Affects durability, adhesion, drying time, and finish quality
• Incorrect ratios can lead to product failure, such as poor adhesion, soft finish, or incomplete curing

Tip for Painters:

Always follow the manufacturer’s instructions precisely and use measuring cups or mixing scales for accuracy.