What's a Mix Ratio? (2024)

The mix ratio for a two component system is the correlation between the resin the activator or curing agent. The activator or curing agent is required to fully cure the system. Mix ratios are typically expressed by numerically like 2:1 or 4:1. The position or sequence of the numbers are important and the first number is the Part A like the Clear Coat, Primers, or Paint resins. The second number in a two number mix ratio sequence is the activator or curing agent. In the examples to follow, we show some of our common mix ratios and provide information on how much of each material you could expect to receive with different order sizes.

EXAMPLES

Two to One ( 2:1 Mix Ratio )

Part A= 100% :Part B= 50%

If you were ordering a gallon of part A, this means you would need to order a half a gallon worth of Part B. You could buy two 1 quart cans or eight 8 fl oz cans to make the half a gallon of Part B. After mixing Part A and Part B together, you will have 1.5 gallons of material.

Four to One ( 4:1 Mix Ratio )

Part A= 100% :Part B= 25%

If you were ordering a quart of Part A, this means you would need an 8 fl oz can( a quarter quart ) of Part B. After mixing Part A and Part B together, you will have 1.25 quarts or 40 fluid ounces of material.

Wait! What about three part ratios like 4:2:1

You might see this for our reducers. In these cases the second number in the mix ratio would be the reducer not the activator or curing agent. The activator would be the last number in the sequence. It is best to add the activator or curing agent last when mixing with reducers. However, some products add hardener second, and thinner/reducer last. Read directions carefully or call with questions.