Measuring Wetness/Spotting/Filming

[Medwell]

Hi everyone,

I was wondering if anyone knew of any test methods to quantitatively measure any of the following three things:

(Note: These aren't theoretical questions, I am looking for tangible laboratory solutions to these problems)

Wetness
Suppose you have a collection of several identical objects with different amounts of water on them - how could you quantitatively evaluate the amount of water on each?

Spotting
Suppose you have a collection of several identical, uniformly colored objects. They are subjected to a process in which they develop varying amounts of "spots" of another color on them - how could you quantitatively evaluate the spotting on each?

Filming
Suppose you have a collection of several identical, uniformly colored objects. They are subjected to a process in which they develop varying levels of a coating "film" how could you quantitatively evaluate the filming on each?

Thanks all.

 

[Zefram]

Hello,

There are several methods that can be used to quantitatively measure wetness, spotting, and filming on objects. Here are a few potential solutions for each scenario:

1. Wetness: One method to measure wetness on objects is by using a gravimetric analysis. This involves weighing the objects before and after they have been exposed to water, and then calculating the difference in weight to determine the amount of water that has been absorbed. Another option is using a moisture meter, which measures the moisture content of an object by using electrical resistance. The higher the moisture content, the lower the resistance will be.

2. Spotting: For this scenario, one potential method is using a spectrophotometer to measure the color intensity of the spots on the objects. This instrument can measure the amount of light absorbed by the spots, which can then be correlated to the amount of color present. Another option is using image analysis software to quantify the size and number of spots on the objects.

3. Filming: To measure filming on objects, one method is using a thickness gauge to measure the thickness of the film. This instrument uses a probe to measure the distance between the surface of the object and the film. Another option is using a spectrophotometer to measure the color of the film, which can indicate the amount of film present on the object.

It's important to note that the specific method used may depend on the properties of the objects and the type of water, color, or film being measured. It may also be necessary to conduct multiple tests or combine methods to get a more accurate measurement. I hope this helps!