The ImmunO™ Micro-Ouchterlony Plate is designed for specific but low affinity antisera. Such antisera require properly spaced wells and polyethylene glycol in the agarose for optimal immunoprecipitation. Each plate contains 8 ouchterlony patterns consisting of a centre well and 6 outer wells. The maximum sample volume is 10 µl in any of the wells.

The plates are prepared especially for the MP Biomedicals polyclonal antisera to human IgG subclasses. When using these antisera for typing immunoglobulin subclasses in patients with myeloma, the sera must be diluted so that the background IgG does not produce visible precipitation.