Instructions 71-7177-00 AL
PlusOne Silver Staining Kit, Protein
General information
Wear gloves at all times. Perform all steps at 21 to 25°C with constant gentle agitation on a shaker.
The quality of the water used for making up the reagents and for washing the gel will affect the staining result. For best results use water with a conductivity of 5 MΩ or more (e.g. Milli-Q™ water).
Freshly made solutions (not older than 24 hours) give best results.
Precautions: The chemicals in this kit should not be discarded via public waste water systems. Please dispose of these chemicals properly. Consult your local regulations for more information.Read the warning text on the label of each bottle and packet.
ExcelGel SDS, ExcelGel XL SDS 12-14 and mini slab gels 0.5 mm
Chemicals required
• Chemicals included in this PlusOne Silver Staining Kit, Protein
• Ethanol
• Glacial acetic acid
• Glycerol (87% w/w) (1000 ml) (Code No. 17-1325-01)
Reagents
Make up the following reagent solutions using the chemicals listed above.
250 ml solution is needed per gel and step except for ExcelGel XL SDS 12-14, which requires 400 ml per gel and step and for Mini slab gels which require 125 ml solution per gel and step.
Note: Glutardialdehyde and formaldehyde should be added immediately before use.
Staining procedure
All steps should be performed with gentle shaking of the staining tray.
1 Fixation: 30 min.
Soak the gel in fixing solution for 30 minutes.
2 Sensitizing: 30 min.
Remove the solution. Add sensitizing solution and leave shaking for at least 30 minutes.
3 Washing: 3 x 5 min.
Remove the sensitizing solution. Add distilled water and wash three times for 5 minutes each time.
4 Silver reaction: 20 min.
Add silver solution and leave shaking for 20 minutes.
5 Washing: 2 x 1 min.
Remove the silver solution. Rinse twice in distilled water for one minute each time.
6 Developing: 2 to 5 min.
Add developing solution and leave shaking for 2 to 5 minutes. Transfer the gel to stopping solution when the bands / spots have reached desired intensity.
7 Stopping: 10 min.
Leave gel shaking in stopping solution for 10 minutes.
8 Washing: 3 x 5 min.
Remove the stop solution. Add distilled water and wash three times for 5 minutes each time.
9Preserving:
20 min. (plastic-backed gels)
2 x 30 min. (gels not supported on plastic films)
Add preserving solution and leave shaking for 20 minutes for plastic backed gels. For gels not supported on plastic films, shake for 30 minutes, pour off the solution, add fresh and shake for a further 30 minutes.
10 Drying: Overnight
Put the gel on a glass plate and wrap it in Cellophane sheet. Leave the gel to dry overnight at room temperature. Do not put the gel in a heating cabinet (the silver stain bleaches at elevated temperatures).