In that case, here's something:
First, a Luggin capilliary - used to get the reference electrode to measure as close to the working electrode as possible.
http://www.voltaicpower.com/References/Luggin.htm
Secondly, instructions below have been shamelessly ripped and edited from a college lab. practical that is at a few places on the web in pdf.
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The instructions for this original experiment can be found in the Journal of Chemical Education (Volume 69, No. 1, Page 74, January 1992).
PROCEDURE:
Part One; Reagent Preparation:
1. Obtain a piece of silver wire from the instructor.
2. Prepare the following solutions:
-25 mL of 0.05 M AgNO3
-50 mL of saturated KCl solution
3. A solution containing 5 mL deionized water, 5 mL of concentrated hydrochloric acid and 5 mL of concentrated nitric acid. Remember to always add acid to water!
Part Two; Electrode Construction:
1. Gently clean a 5 mm portion of one end of a silver wire with emery cloth. Dip this end of the silver wire 3 cm into the 1:1:1 water, nitric acid, hydrochloric acid solution for 15 seconds. Remove the wire, rinse it thoroughly with DI water and set it aside to dry. This forms a AgCl ppt coating on the wire, providing both species for the AgCl(s) + 1e- Ag(s) + Cl
-(sat) reaction in the reference electrode.
2. Obtain a Pasteur pipet (thin-wall glass pipet) and triangular file. Score the tip of the pipet 1 cm from the bottom of the pipet body with the file and snap off the tip. Cover the pipet with a paper towel to prevent injury and perform this operation over a paper towel to collect small pieces of glass.
3. Light a bunsen burner and slowly melt the tip of the broken Pasteur pipet. The goal here is to melt the tip sufficiently so that only a small pinhole (~0.1 mm or less) remains. This pinhole functions as the salt bridge and provides electrical conductivity between the reference cell and the metal electrode. Allow the pipet to cool. SEVERAL ATTEMPTS AT STEPS 2 and 3 will probably be necessary to get a suitably small hole without sealing the tip of the pipet.
4. While the electrode is cooling, obtain cotton and wooden shaft cotton swab. Break the cotton into small pieces about 5-6 mm in diameter. Also obtain about a dozen filter paper circles (5 mm in dia.). These are made by punching holes in filter paper using a single hole punch.
5. Using the wooden shaft cotton swab, force cotton balls into the bottom of the electrode body and compress them. Add cotton balls and compress them until they are ~1 cm thick. Compress this as tightly as possible without shattering the electrode body. Add 6 layers of filter paper circles and compress these on top of the cotton balls.
6. Add saturated KCl solution to the electrode to a depth of 3 cm from the top of the electrode. Then add ONE drop of AgNO3 solution to the electrode. Place the electrode in a 50 mL beaker or graduated cylinder filled with saturated KCl solution and soak it for 5 minutes. This saturates the cotton fibers/filter papers with KCl.
7. Remove the electrode and dry it. Hold it at eye level and examine it to see if solution is leaking from the pinhole. It should leak at no more than 1 drop every 4-5 minutes, if it leaks at all. If it leaks at a greater rate, the electrode body must be reconstructed until it leaks at the indicated rate. Do not be discouraged if many attempts are needed to properly assemble the electrode, it is a difficult procedure!
8. Place the silver wire into the electrode (tarnished end first) until the wire extends to 5 mm above the filter paper circles. Seal the top of the electrode with a plug of rolled up ParaFilm (wax film) secured by tape. Seal the top as best you can, but be careful not to crack the electrode body and cut yourself. Store the electrode in a beaker or graduated cylinder filled with saturated KCl up to the level of the fill solution in the electrode. The electrode is now ready for use.
Finally, here is another method:
http://www.consultrsr.com/resources/ref/agcl.htm%5B/blue
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Oh yeh, AgCl reference electrodes are fine in acid electrolytes but slowly degrade in strongly basic ones. Short periods look OK (reductive aminations of ketones seem to work best at pH 11-12).