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.
These stools are designed to be used at a counter height of 36 - 39. 30 inch stools are designed for bar counters that are 40 - 45 in height. This stool size is also suitable when being used in a family room around a pool table or shuffle board. 34 inch stools are a custom size stool. Most people would not need this height in a barstool.