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2. Metformin - Wikipedia

   en.wikipedia.org/wiki/Riomet_ER

   Metformin has acid dissociation constant values (pK a) of 2.8 and 11.5, so it exists very largely as the hydrophilic cationic species at physiological pH values. The metformin pK a values make it a stronger base than most other basic medications with less than 0.01% nonionized in blood.

3. Pharmacokinetics - Wikipedia

   en.wikipedia.org/wiki/Pharmacokinetics

   Pharmacokinetics (from Ancient Greek pharmakon "drug" and kinetikos "moving, putting in motion"; see chemical kinetics), sometimes abbreviated as PK, is a branch of pharmacology dedicated to describing how the body affects a specific substance after administration. [1]

4. Buffer solution - Wikipedia

   en.wikipedia.org/wiki/Buffer_solution

   Buffer capacity falls to 33% of the maximum value at pH = pK a ± 1, to 10% at pH = pK a ± 1.5 and to 1% at pH = pK a ± 2. For this reason the most useful range is approximately p K a ± 1. When choosing a buffer for use at a specific pH, it should have a p K a value as close as possible to that pH.

5. Drop (unit) - Wikipedia

   en.wikipedia.org/wiki/Drop_(unit)

   This is equal to about 61.6 μL (U.S.) or 59.2 μL (Britain). Pharmacists have since moved to metric measurements, with a drop being rounded to exactly 0.05 mL (50 μL, that is, 20 drops per milliliter). In hospitals, intravenous tubing is used to deliver medication in drops of various sizes ranging from 10 drops/mL to 60 drops/mL.

6. When Is the Best Time to Take Metformin? - AOL

   www.aol.com/best-time-metformin-141700387.html

   Take liquid metformin at the same time each day and with food. Just like with the tablet version, make it a habit to take liquid metformin at the same time to avoid missing doses and with food.

7. Suspension (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Suspension_(chemistry)

   In chemistry, a suspension is a heterogeneous mixture of a fluid that contains solid particles sufficiently large for sedimentation. The particles may be visible to the naked eye , usually must be larger than one micrometer , and will eventually settle , although the mixture is only classified as a suspension when and while the particles have ...

8. Universal indicator - Wikipedia

   en.wikipedia.org/wiki/Universal_indicator

   A universal indicator is a pH indicator made of a solution of several compounds that exhibit various smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. A universal indicator can be in paper form or present in a form of a solution. [1]

9. Phosphate-buffered saline - Wikipedia

   en.wikipedia.org/wiki/Phosphate-buffered_saline

   Add 2.84 mM of HCl to shift the buffer to 7.3 mM HPO 4 2− and 4.6 mM H 2 PO 4 − for a final pH of 7.4 and a Cl − concentration of 142 mM. The pH of PBS is ~7.4. When making buffer solutions, it is good practice to always measure the pH directly using a pH meter. If necessary, pH can be adjusted using hydrochloric acid or sodium hydroxide.