29unique Phot Number to directly access any programmedcalibration (including User Defined Tests). This method willnot be available if the Photometer 7500 Bluetooth is operatingin Hotkey Entry Mode.Hotkey Entry – use the numeric keypad to directly access upto 10 of the most commonly used tests. When operating inthis mode the Info panel will display the icon and PhotNumber Entry mode will be disabled.Choose a Test – available in either Phot Number Entry orHotkey Entry modes, the full list of test parameters isavailable by selecting Choose a Test and scrolling using theup/down keys. When the desired parameter is highlighted,press the OK key to access the method. Tests are presentedin Phot Number order.When the required test is selected the Photometer 7500Bluetooth automatically selects the correct wavelength andsets additional method parameters as required.Test method protocols are defined in detail in the PalintestPhot Book, supplied with the Photometer 7500 Bluetooth,including the reagents and accessories that may be required.When a test is selected, the Photometer 7500 Bluetoothscreen will display a number of screens and options to guidethe user through the testing process, as described in thefollowing pages.6.2 Dilution FactorIf selected in the System menu, the initial screen will requestthe defined Dilution Factor to apply to results.If Dilution Factor is not active this screen will not be shown.Results shown on the final screen have automatically beencorrected for dilution prior to display. Corrected results willalso be stored in the log.