-
公开(公告)号:US20190242825A1
公开(公告)日:2019-08-08
申请号:US16317612
申请日:2017-07-10
Applicant: CHELSEA TECHNOLOGIES GROUP LTD
Inventor: Kevin OXBOROUGH
CPC classification number: G01N21/6486 , C02F2209/36 , G01N15/06 , G01N21/6408 , G01N21/85 , G01N33/1826 , G01N33/1893 , G01N2015/0065 , G01N2015/0687 , G01N2015/0693 , G01N2021/635
Abstract: Cell counting device A cell counting device and a method of using a cell counting device are disclosed. The cell counting device comprises a chamber for receiving a sample, at least one light source to emit light towards a section of the chamber. The section of the chamber comprises a sub-sample of the sample. The cell counting device also comprises a light detector to receive a light emitted from the section of the chamber and to generate an electronic signal associated with the received light, and a controller. The controller is configured to estimate the number of photoactive cells in the sample by calculating the distribution of variable fluorescence [Fv] values of a predetermined number of sub-samples about the mean Fv value.
-
公开(公告)号:US20190033193A1
公开(公告)日:2019-01-31
申请号:US15755782
申请日:2016-08-10
Applicant: CHELSEA TECHNOLOGIES GROUP LTD
Inventor: Kevin OXBOROUGH , John ATTRIDGE , David ANDREWES
CPC classification number: G01N15/06 , B63J4/002 , C02F1/00 , C02F1/008 , C02F2103/008 , C02F2209/001 , C02F2209/36 , C02F2303/04 , G01N1/38 , G01N21/6408 , G01N21/6486 , G01N33/1826 , G01N2001/2064 , G01N2001/386 , G01N2015/0693 , G01N2021/635 , G01N2021/6419 , G01N2021/6478 , G01N2021/6482 , G01N2201/0627 , G01N2201/0631 , G01N2201/0638 , G01N2201/064 , G01N2201/0696 , Y02A20/206
Abstract: A ballast water monitoring device and a method for detecting live phytoplankton are disclosed. The device comprises a chamber for receiving a sample, at least one light source to emit light towards the sample, a light detector to receive light from the sample and generate a light signal, and a controller. The controller is configured to control the at least one light source to emit a single pulse of light, calculate the variable fluorescence [Fv] of the sample in response to the pulse of light, at time intervals less than the duration of the pulse of light, compare the calculated variable fluorescence to a predetermined reference limit, and perform an action if the calculated variable fluorescence is greater than the predetermined reference limit.
-