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Specifications

Catalog #	C0050-26
Applications	Suitable for use in ELISA as a calibrator. Other applications not tested.
Recommended Dilution	Optimal dilutions to be determined by the researcher.
Storage and Stability	May be stored at 4°C for short-term only. For long-term storage and to avoid repeated freezing and thawing, add sterile glycerol (40-50%), aliquot and store at -20°C or colder. Aliquots are stable for at least 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Source	Cell culture supernatant
Purity	Calibrator grade. Purity ratio: 175units Specific Protein (OD280)/ml Total Protein.
Concentration	~5Ku/m (lElecsys)
Form	Supplied as a liquid in PBS, pH 7.4, 0.1% sodium azide.
Specificity	Low Crossreactivity to major bovine serum proteins. CA-125 (Elecsys) < 25%, CA19–9/CA19–9–335 (Elecsys) ~6%.
Important Note	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.