Measurement company Agilent Technologies Inc. of Santa Clara, Calif., and Signature Genomic Laboratories LLC of Spokane, Wash., a provider of microarray-based cytogenetic diagnostics, have signed a long-term supply agreement in which the former company will supply custom oligonucleotide microarrays to the latter and its customers based on the Washington company’s SignatureChip Oligo Solution. Terms of the agreement have not been disclosed.