Molecular Biology Grade Ambion™ 1 M MgCl₂ solution is available in single 100 mL vials form provided. This solution is certified RNase-free, cost-effective, and ready-to-use. Because RNases are so ubiquitous, producing products for use with RNA is extremely difficult. Ambion™'s nuclease-free reagents and buffers are manufactured in multiple facilities specifically designed to prevent the introduction of nucleases. Highly sensitive RNase testing is performed at several different stages of the production process to ensure optimal quality. These reagents are rigorously tested for non-specific contaminating endonuclease, exonuclease, and RNase activity.