What is emulsifier in NDT?
In this regard, what is emulsifier time?
The optimal emulsifier contact time is dependent on a number of variables that include the emulsifier used, the emulsifier concentration, the surface roughness of the part being inspected, and other factors. Usually some experimentation is required to select the proper emulsifier contact time.
Likewise, how do you remove penetrant dye? In these instances, it is possible to remove the excess penetrant using a solvent wipe technique. To perform this method of removal, apply the solvent (for example, SKC-S) to a cloth, and then perform one or two gentle wipes across the surface of the part to remove the excess penetrant.
Accordingly, which emulsifiers are water based?
Lipophilic emulsification systems are oil-based materials that are supplied in ready-to-use form. Hydrophilic systems are water-based and supplied as a concentrate that must be diluted with water prior to use .
How do I choose an emulsifier?
Optimum oil phase concentrations Depending on the concentration of the oil phase (or water phase), you should try to find the most suitable emulsifier for that system. If a certain emulsifier works in your emulsion with 5% oil, it will very probably not be the best choice for another emulsion with 40% oil phase.