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For Sale - Ventura Full Total Face CPAP Mask
I’m selling an Ventura Full Total Face CPAP Mask Large and two spare liners. I bought it new from the Hope2Sleep shop, but it is not suitable for me. Only used for about two weeks so I have washed it thoroughly. Because of this, it is very much…See More
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to confuse m i use the words potential hydrogen commonly abbreviated pH that is little p and a capitol H sometimes both are wrongly capitalized
the little p can have three different names as follows 1)potential 2)power 3)percent
and the pH value is a logarithmic scale of 1-14