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What is "pH" - Definition & Explanation

pH is the measure of acidity or alkalinity of a substance. On a scale of 0-14, 7 is neutral (neither acid nor alkaline). Lower than 7 is acidic (gives up a hydrogen atom when added to water) and greater than 7 is alkaline (a base), giving up OH (hydroxide) when added to water. The further away the number is from 7, the "stronger" it is. Each fabric has a preferred pH. PH is also used in water-based cleaning as some soils yield to different pH solutions.

Some other terms

Some more terms:

Indentation Load Deflection (ILD) refers to the firmness of a piece of foam. The lab puts a 4" x 15" x 15" piece of foam on a flat surface. Then a round metal plate, 8" in diameter, pushes down on...
Policy where furniture, fabric, lighting or wallcoverings are sold exclusively through or to retailers, upholsterers, designers and architects at wholesale showrooms. Retail clients may sometimes be...
A variation of a 1x1 rib stitch with 2 sets of needles There is alternate knitting and tucking on one course then tucking and knitting on the next course. The fabric has the same look on both sides...
The distance between the beginning of one complete pattern in the fabric weave, print, or design and the beginning of the next identical pattern. Fabric may have vertical or horizontal repeats or...
These weaves give the characteristic single-diagonal lines noted on the face of the cloth. There are twice as many threads per inch in the warp than there are in the weft. Because of the twist in the...

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