Invitrogen IPTG (Isopropyl-beta-D-thiogalactoside) is an inducer of the lac operon and is frequently used in conjunction with X-GAL to determine the lac phenotype of recombinant plasmids or phage.
UltraPure™ Phenol:Chloroform:Isoamyl Alcohol (25:24:1, v/v) is used in the purification of nucleic acids. This reagent consists of highly pure chloroform, isoamyl alcohol, and UltraPure™ Phenol saturated with Tris-HCl.
Molecular biology grade, Invitrogen 1M MgCl2 solution is supplied in one bottle containing 100 mL. The solution is certified RNase-free, economical, and ready-to-use.
Thermo Scientific 25 mM MgCl2 is an aqueous solution of 0.22 μm membrane-filtered magnesium chloride, used for optimization of magnesium ion concentration in PCR.
In RNA extraction procedures, Acid Phenol:Chloroform:IAA aids in the removal of DNA (it partitions into the organic phase), helps to stabilize the interface, and prevents foaming when mixing.