$19.90 for pH Paper Range 0-3 We ship to USA only. Order pH Paper Range 0 to 3 19 Types of pH Paper Order pH Litmus Papers, Solutions & Pencils Full Range 0-14, Wide Range/Short Range Kits, pH Measure All Sets pH Short Ranges 0-3, 3-5.5, 4.5-7.5, 5.5-8, 8-9.5, 9-13, 12-14. Test saliva or urine AB Dispenser Red & Blue Litmus pH Books Test Water Pond or Tap Water, Acid Rain, Water Hardness, Drinking Water, Humidity Purify Water |
One Strip - One Dip - One Match Only one color to match for a clear and positive result. Hydrion pH papers provide a simple fast and reliable method of pH measurement. Just dip paper and match to the color chart. Tap, pond and rain water should be tested using Hydrion Lo-Buff Lo Ion pH Test Paper. What is pH? The dictionary definition of pH is potential of hydrogen, the scientific definition is the negative logarithm to base 10 of the molecular concentration of hydrogen ion i.e. pH = -log[H+]. A more simplistic description is that pH is the acidity of a substance. Hydrogen Ions High hydrogen ion amounts indicate high acid concentration, low hydrogen ion amounts indicates a basic or alkaline concentration. The pH scale runs from 0 to 14 with 0 being the most acidic, 7 neutral, and 14 being the most alkaline or basic. It is a logarithmic scale, based on powers of 10, so that 1 pH unit change equals a 10 fold change in H+ ion concentration! A pH of 6 is ten times more acidic than a pH of 7.
pH and Water Absolutely clean, pure water should have pH 7, however because water can dissolve gases readily the carbon dioxide, present in the atmosphere, increases this to about pH 6. (Carbon dioxide reacts with water molecules to produce a very weak acid.) Water is made up of Hydrogen [H] and Oxygen [O] these atoms combine to form a molecule. They combine because the hydrogen has a single positive charge [H+ ion] whereas the oxygen has a double negative charge [O-- ion]. They combine in the ratio of two hydrogen atoms to one oxygen atom, hence H2O. The chemical equation is shown as: H+ + OH- g H2O Neutral Solutions In pure water the H2O molecules are constantly being broken down into H+ + OH- ions and then joining together again to form H2O this is called dissociating. In neutral solutions the relative rates of these two reactions are equal and so the concentration of H+ and OH- ions must also be equal. Dynamic Solutions When a solution contains substances, which affect this dynamic (moving) equilibrium, the properties of the water are affected. In other words if something else is introduced into pure water then it will affect the reaction of the H+ and OH- ions to dissociate. Some atoms or molecules will have a greater affinity than either the hydrogen or oxygen. The molecules, atoms and ions present in the material affects the pH of the water solution. (pH less than 7 acidic : pH greater than 7 alkaline.) |
Hydrion pH Papers in Single Roll Dispensers complete with Color Chart and 15 foot
roll of pHydrion Short Range Testing Paper. The Hydrion Short Range Papers show a
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