enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Surface chemistry of paper - Wikipedia

   en.wikipedia.org/wiki/Surface_chemistry_of_paper

   The surface charge of calcium carbonate is negative and not dependent on pH, however it can decompose under acidic conditions. [3] Kaolin has negatively charged faces while the charge of its laterals depend on pH, being positive in acidic conditions and negative in basic conditions with an isoelectric point at 7.5. [1]

3. Paper and ink testing - Wikipedia

   en.wikipedia.org/wiki/Paper_and_ink_testing

   The pH value of paper indicates the residual acidic/alkaline chemicals in pulp, or atmospheric pollutants. It is an environmental KPI parameter in paper making. Acidic paper made from wood-based pulp that still contains lignin will deteriorate over time by becoming brittle and turning yellow. [ 1 ]

4. Weak base - Wikipedia

   en.wikipedia.org/wiki/Weak_base

   With pOH obtained from the pOH formula given above, the pH of the base can then be calculated from =, where pK w = 14.00. A weak base persists in chemical equilibrium in much the same way as a weak acid does, with a base dissociation constant ( K b ) indicating the strength of the base.

5. pH - Wikipedia

   en.wikipedia.org/wiki/PH

   The measurement of pH can become difficult at extremely acidic or alkaline conditions, such as below pH 2.5 (ca. 0.003 mol/dm 3 acid) or above pH 10.5 (above ca. 0.0003 mol/dm 3 alkaline). This is due to the breakdown of the Nernst equation in such conditions when using a glass electrode.

6. Wikipedia : Vital articles/Level/5/Physical sciences/Chemistry

   en.wikipedia.org/.../5/Physical_sciences/Chemistry

   Vital articles are lists of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles.

7. Paper chemicals - Wikipedia

   en.wikipedia.org/wiki/Paper_chemicals

   Paper Coating 1) The paper or board 2) The first layer of coating to even out the surface 3) A second layer for an even smoother and whiter surface. Pigments that absorb in the yellow and red part of the visible spectrum can be added. As the dye absorbs light, the brightness of the paper will decrease, unlike the effect of an optical ...

8. Southern blot - Wikipedia

   en.wikipedia.org/wiki/Southern_blot

   Buffer transfer by capillary action from a region of high water potential to a region of low water potential (usually filter paper and paper tissues) is then used to move the DNA from the gel onto the membrane; ion exchange interactions bind the DNA to the membrane due to the negative charge of the DNA and positive charge of the membrane.

9. Transfer paper - Wikipedia

   en.wikipedia.org/wiki/Transfer_paper

   Transfer paper is a thin piece of paper coated with wax and pigment. Often, an ink-jet or other printer is used to print the image on the transfer paper. A heat press can transfer the image onto clothing, canvas, or other surface. Transfer paper is used in creating iron-ons. Transfer papers can also be used for the application of rhinestones to ...