The signal-to-noise ratio determines the quality of any detection experiment. This ratio is in principle determined by the characteristics of specimen and detection reagents. With adequate blocking and incubation media, background reactions are minimized whereas specific reactions are not hampered.
Aurion has developed Blocking Solutions which effectively block ‘sticky’ surfaces by multi-point hydrophobic and charge-based interactions. The Blocking Solutions are specifically designed to meet the characteristics of each type of secondary conjugate.
The AURION Blocking Solutions are used to prevent immunoreagents from binding non-specifically to specimens with “sticky” surface properties.
Procedures to eliminate background comprise three main steps:
These steps should be balanced for optimum results.
AURION Blocking Solutions are prepared using specially selected compounds. All ruminant proteins are obtained from healthy livestock.
AURION Blocking solutions contain Bovine Serum Albumin and Cold Water Fish Skin Gelatine in phosphate buffered saline with sodium azide as preservative. Normal serum may have been added as indicated on the label. The blocking capacity of each lot is determined using a dot-spot test system as described by Moeremans et al., J. Immunol. Methods 74, (1984), 353.
Each package contains 30 ml of solution. It accommodates 300 specimens for light microscopy at 100 µl/specimen (~ 3 drops), or 1000 EM grids at 30 µl/specimen (~ 1 drop).
Detailed information is provided on the package inserts.
Placing grids on top of drops of Blocking Solution arrayed on a sheet of Parafilm™ after they have been treated for aldehyde inactivation.
Floating specimens in Blocking Solution, preferably on a rocking table.
Applying a few drops of Blocking Solution to cover the specimen.
Incubating specimens (e.g. immunoblot strips) in Blocking Solution on a rocking table in screw-cap sealed disposable tubes.
Blocking Solutions are available in the following specificities:
AURION Blocking Solutions have a guaranteed shelf life of 18 months from the date of quality control analysis.
The products should be stored at 4-8°C. Freezing is not recommended.
For Protein A/G immuno reagents:
905.001 - 30 ml - € 43.00
For Goat immuno reagents:
905.002 - 30 ml - € 74.00
For Rabbit immuno reagents:
905.003 - 30 ml - € 86.00
For Sheep immuno reagents:
905.004 - 30 ml - € 74.00
For Donkey immuno reagents:
905.005 - 30 ml - € 86.00
Prices Ex VAT (if applicable)
Material Safety Data Sheet
AURION blocking solutions: MSDS or technical data sheet