Initial knockdown capability

A measure of the effectiveness of a defoamer. First, a column of foam is generated in a foam stability apparatus and the foam height is recorded. A measured amount of defoamer is added, and the reduction in foam height over a specified time period, for example, 2 s, is noted. The knockdown capability is the reduction in foam height. This test has many variations. Sometimes referred to as initial knockdown capability . 

These Initial Investigations of the charge Injection device have Indicated that the device promises to be a successful detector for simultaneous multielement analysis In atomic emission spectrometry. The unique non-destructive readout, coupled with selective knockdown and pseudo-random addressing give the CID system capabilities unparalleled in any other detector available today. The device has been shown to have at least an adequate sensitivity, can be operated in a manner which reduces pixel cross talk, and the dynamic range of the system can be extended to virtually any desired level. 

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