This is a brand new product from Agilent that looks great. Designed to complement SureSelect sequence capture technology, it can also be used by any researcher who is working with next generation sequencing. In short, it is a fast and sensitive way to quantitate the amount of DNA in the library. The kit contains a DNA standard to which the library samples are compared.
Since the Agilent website is still being updated, you can get early access to the protocol here (PDF file): NGS Library Quant Kit