IPTG is a molecular biology reagent utilized in cloning experiments. This compound is used as a molecular mimic of allolactose, a lactose metabolite that triggers transcription of the lac operon.ne advantage of IPTG for in vivo studies is that since it cannot be metabolized by E. coli its concentration remains constant and the rate of expression of lac p/o-controlled genes, IPTG is not a variable in the experiment.
The Ideal Height. The ideal bar stool should be approximately 28 to 30 inches high to match the 42 to 48 inches standard bar height.
The normal seat height for a bar stool is 30 (76 cm) with a 26 (66 cm) stool being used against kitchen counters. Extra tall 36 (91 cm) stools are increasingly used in contemporary styles with high pub tables to create a visual effect in modern interiors. Counter height bar stools have a seat height of 24 (61cm). By comparison a conventional dining chair seat height is 18 (46 cm).