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.
Choose the Right Stool: Take the height measurement of the bar and subtract 10â³ â that will be the approximate height of stool you should purchase. This will give you plenty of space to sit at the bar, with or without your legs crossed, and feel comfortable. To get the height of the stool, measure from the feet up to the seat. Counter height stool seats range from 24-29 inches from the floor and are perfect for kitchen counters or tables that are about 34-39 inches high.