Stable solution of X-GAL and IPTG. Does not contain DMSO or DMF. Solution concentration is 10mg/ml X-Gal and 8mg/ml IPTG. Shelf life: 1 Year Soluble in: Water Store at: 2-8°C IPTG is combined with X-GAL to detect lac+ colonies or cells in a colorimetric assay. Distinguishes recombinants (white) from non- recombinants (blue) in cloning strategies using vectors such as Lambda-11, M13mp 18 and 19, pUC18 and 19, pUR222 containing the lacZ gene.
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