Here we have provided comprehensive lists of commonly asked questions regarding our fluidics products and related applications. This information is designed to support your inquiries, but if you don’t find the answers you are looking for we encourage you to contact us for further assistance.
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Introduction of a sample into the flow path is properly done through the use of an injection valve. This valve allows for the introduction of a sample with minimal interruption to the pump flow. With the injection valve in the LOAD position, sample is pushed through the needle port and into the sample loop (a piece of tubing with a known volume). Once the sample has been loaded into the loop, the valve is rotated to the INJECT position. By doing this, the pump flow is diverted through the sample loop, pushing out the sample in the process. The pump flow continues carrying the sample out to the column, where the separation begins.