Mixing ratio in epoxy systems is calculated by two different measuring methods as weight and volume. Since epoxy resins and epoxy hardeners have different specific weights, the weight calculation and the volume calculation will not give the same result. For example, it is not correct to mix in a mixture ratio of (A) Resin: (B) Hardener = 2: 1 by weight, as 2 containers (A) and 1 container (B). Therefore, if by weight, the most accurate measurement method is the method made using digital precision scales based on weight calculation.
The point to be considered in the use of precision scales is the measurement precision of the scale and the accurate weighing of the scale. First of all, make sure the weight of the scale is on your scale to make sure it weighs correctly. Weigh a sample scale and observe the correct value on the screen. If the sensitivity of your scale is low, you will have a high probability of error in weighing with very small amounts. That’s why you should mix as many products as possible to avoid sensitivity errors. For example, if you are measuring on a 1 gram scale, try not to mix less than 150 grams.