Kay Musical Instrument Company Kay Musical Instrument Company Kay Musical Instrument Company was a musical instrument manufacturer of the United States, in operation from the 1930s until the 1960s. Kay was established in 1931 in Chicago, Illinois, by Henry Kay Kuhrmeyer, from the assets of the former Stromberg-Voisinet (founded as Groeschel Mandolin Company in 1890). Kay offered their first electric guitar in 1936 — five years after the Rickenbacker "Frying pan", and the same year as the Gibson ES-150. However, the Kuhrmeyer-owned Stromberg-Voisinet brand had produced the Stromberg Electro even earlier, in 1928, making the short-lived model arguably the first commercial electric guitar. The
Plate reader instrument (multi-mode plate reader). The range of applications for multi-mode plate readers is extremely large. Some of the most common assays are: While "plate reader" usually refers to the devices described above, many variations are available. Some examples of other devices working with the microplate format are: Known plate reader developers are the companies BioTek and BMG Labtech. Plate reader Plate readers, also known as microplate readers or microplate photometers, are instruments which are used to detect biological, chemical or physical events of samples in microtiter plates. They are widely used in research, drug discovery, bioassay validation, quality control and