Hi Karl, We have purchased primers from them with great success. We never used any fluorescent ones. The company address is: Operon Technologies, Inc. 1000 Atlantic Ave. Alameda, CA 94501 Phone (510) 865-8644 or 1-(800) 688-2248 FAX: (510) 865-5255 No relation to company, etc. We also like Bio-Synthesis, Inc. and DNAgency for primers. Cheers, A. Otsuka