to protect the mask from moisture and wet conditions
To protect the mask from moisture and wet conditions
You might try a restraunt supply.
A troop carrier is a United States air troop forces unit. The purpose of having a troop carrier is air transport for the allied divisions in Europe theater.
There are various purposes and uses for plastic cans. The most common use and purpose for a plastic can is as a container for food or beverages. Plastic cans can also be used as trash containers.
The function of cork is for insulation and water proofing. The secondary plant body consists of tissues produced by the vascular cambium, and cork cambium.
The purpose of a plastic prototype is to test invention, attract investors, and or get the companies to license the invention idea. And the overall purpose is to make you money from invention idea.
In case of coherent demodulation carrier used for demodulation purpose is in phase and frequency synchronism with carrier used for modulation purpose. For non-coherent demodulation it is not in synchronism.
The author's purpose in the trial of Martha Carrier is likely to shed light on the injustices and hysteria that surrounded the Salem witch trials. By highlighting Carrier's case, the author may aim to illustrate the impact of fear, prejudice, and mass hysteria on society and the individuals caught up in such events.
The purpose of using a plastic casing depends on what product the casing is for. Generally plastic is used because it is a very versatile material that can both protect and look good. Plastic is also easy to color and a relatively cheap material.
It seam's to me that if you apply water repellent before water proofing you defeated your purpose, and if your going to put tile down the concrete absorbs the moisture from the mortar which makes it bond.
to determine the number of times the plastic can be recycled
It is an aircraft carrier, that is it's purpose - to operate aircraft and project naval power.