The immunoglobulin preparations are supplied as a liquid.Purity levels are >97% IgG as analyzed by SDS-Page. These preparations are especially useful as a co-precipitant in RIA methods employing polyethylene glycol or ammonium sulfate precipitation steps,or as a protein stabilizer blocker in a number of immunoassays. These preparations are also useful as IgG control solutions for biochemical analytical tests.Immunoglobulin preparations are provided at pH 7.2 ± 0.2.Usage:bioWORLD's products are supplied for LABORATORY RESEARCH USE ONLY.The product may not be used as a drug,agricultural or pesticidal product,food additive or as a household chemical.