The RABHRP3 Streptavidin-HRP Conjugate is specifically intended for titered use in RAB series ELISA only. The appropriate dilution factor for the kit it is used in will be listed in the ELISA protocol.
The exact concentration is not known and may vary from lot to lot to ensure performance in the ELISA kit. If this product is not being used in an RAB series ELISA, it would be advisable to use a different HRP conjugate.
We have several alternative options available, but cat# 18-152 is commonly used for ELISA and Western Blots and is provided at a 1 mg size.