why does khp need to be dried?
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Most solids contain at least some moisture; thus, any solid used must be dried. Potassium Hydrogen Phthalate (KHP) is a monoprotic acid of high molecular mass that can be easily dried. For this reason KHP is generally chosen as the solute in making a standard acid.
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The purpose of the paper is to saturate the air in the beaker with the solvent vapours. If the air is not saturated with solvent, the solvent that is rising up the plate will evaporate in an attempt to saturate the air. This will lead to high Rf values and poor resolution.
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Today, chemical additives provide the catalyst to speed drying time. Boiled linseed oil has the added catalyst, and "double-boiled" just has more catalyst. Raw linseed oil takes a long time to cure, boiled takes much less.
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The recommended ways to dry NMP are to use stir over CaH2 for 12 hours, distillation (not bad as it distills at 202 ºC and does not form an azeotrope with water), store over 4 angstrom sieves.
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Canned kidney beans should be thoroughly rinsed before using. Dried kidney beans should be soaked before cooking, both to speed cooking time and to reduce any gas-causing tendencies. ... Boil for a few minutes and then let them soak for an hour off the heat, drain, and then add fresh water and continue cooking.
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PKP is used to extinguish class B and class C fires because it is very effective against these fires. However, it is both corrosive and abrasive and should be used on class C fires only in emergencies. PKP is available in 18-pound and 27-pound portable extinguishers. PKP can be used in conjunction with AFFF.
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VHP is a relatively rapid sterilization technology. VHP is produced by the vaporization (at 120°C) of liquid hydrogen peroxide to give a mixture of VHP and water vapor. As a “dry” process, the concentration of VHP is maintained below a given condensation point, which is dependent on the area temperature.
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Egg white can also be dried on trays or pans to create a flake or granular form. Glucose, a reducing sugar, is removed from egg whites before drying to produce product with excellent storage stability.
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Baking powder, soda or corn starch should be stored in a dry cupboard away from heat and excess moisture. You should only measure with a dry utensil and replace the lid promptly after each use.
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['Processed foods.', 'Dried fruit.', 'Dried vegetables.', 'Dried seeds.', 'Dried fish and seafood.', 'Dried meats.']
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Dry & Crumbly. To insure recipe success, always use the fat recommended in the recipe. When flour is "scooped" into the measuring cup directly from the container, it compresses or becomes packed. ... Too little fat will result in dry, less tender muffins.
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Drying means to get rid of the free water in a given compound. ... A drying process requires simple method of moisture removal like sun-drying whereas dehydration is a controlled method of removing moisture (controlled temperature and humidity) , commonly using sophisticated equipment.
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Very High Potassium Fruits to Avoid Dried Fruit: Dried apricot, currants, dates, dried mixed fruit, figs, dried or tinned prunes, raisins and sultanas and fresh and dried coconut are very high in potassium and should generally be avoided.
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Depending on the size of your compactor container, add a tiny bit of hydrogen peroxide at the time, mixing it to create a paste. Be sure that you don't add too much because at the end your make up product will be filled with water which would make it hard to get dry again. A few drops at a time will do.
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You might be one of those who find it difficult to find the answer to this disturbing question “Can Carpet Padding Be Dried?” The fact is that carpet padding can be dried. If you keep your carpet padding wet for more than a day, it is possible your carpet is already infected with mold.
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The bottom line: Boveda is not designed to be re-used. Attempting to rehydrate the packs increases risk of wearing out the paper and heat-seals, thus causing potential membrane leaks.
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Kiln-dried wood is used for furniture, cabinets, flooring, and many other products, as it is less likely to cup and warp. This allows manufacturers to make a more durable product. Air dried lumber is preferred for outdoor patio furniture, fencing, and decking, while green lumber is used in the pallet industry.