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Spectral / Wavelength Range:
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The dispersion of the grating across the linear array; also expressed as the "size" of the spectra on the array.
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Search Logic:
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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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Dynamic Range:
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Sometimes known as linear dynamic range or linear range, the analyte concentration range over which response is a well defined (usually linear) function of the analyte concentration. The dynamic range can be increased by varying instrumental parameters, such as choice of analyte absorption line or decrease of absorption path length and sample volume.
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Search Logic:
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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Number of Lamps:
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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Vaporization Method:
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Your choices are...
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Flame
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Flame atomic absorption is a very common technique for detecting metals and metalloids in environmental samples. The technique is based on the fact that ground state metals absorb light at specific wavelengths. Metal ions in a solution are converted to atomic state by means of a flame. Light of the appropriate wavelength is supplied and the amount of light absorbed can be measured against a standard curve.
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Graphite Furnace (GFAAS)
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GFAAS is a highly sensitive spectroscopic technique that measures each element sequentially. The analytical method is optimized for each element by using different furnace parameter adjustments and matrix modifiers.
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Other
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Other unlisted or unspecified vaporization methods. Carbon rod, tantalum boat atomization, vapor generator.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Detector Type:
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The part of the instrument that converts radiant energy from the light source to electricity. Typically a photomultiplier tube, but may also be a solid-state detector in more modern instrumentation.
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Your choices are...
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Photomultiplier Tube
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A photo-detector, with adjustable voltage, that translates optical tube (PMT) signals into electrical current. Increasing the PMT voltage increases the output signal for a given amount of light.
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Photodiode
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A semiconductor device used to detect light and generate an electrical current. Typically used in forward scatter (FSC) detection.
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Other
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Other unlisted or unspecified detector types.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Local Interface:
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Your choices are...
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Analog Front Panel
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The panel has analog user inputs such as potentiometers, dials, switches, for adjustment of output, ranges, etc.
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Digital Front Panel
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The panel uses digital keypads or menus for programming.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Computer Interface?
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Can be controlled or monitored remotely with a computer via interface.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Computer Interface Options:
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Your choices are...
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Serial Interface
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A port, or interface, that can be used for serial communication, in which only one bit is transferred at a time. Examples include RS232, RS422, RS485, USB, etc.
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Parallel Interface
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A channel capable of transferring more than one bit at a simultaneously. Examples include PC Printer Port, Centronics®, etc.
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Other Computer Interface
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Modem, transmitter, TTL, etc.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Application Software Included?
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For control or for monitoring the process.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Display Options:
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Your choices are...
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Analog Meter
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Data is displayed with an analog meter or simple visual indicator.
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Digital Readout
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Device uses numerical or application specific display.
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Video Display
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The data is presented in video form via CRT, LCD, or other multi-line forms.
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None
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No integral display. Output is read and displayed remotely.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Auto Lamp Positioning?
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Spectrometer can automatically position lights.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Background Correction?
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A technique usually employed relative to the determination of trace metals to compensate for stray light emission and various spectral interferences which would bias analytical results.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Sample Temperature Control?
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In some applications the sample temperature must be controlled either by the spectrometer or a circulating water bath to get a stable and correct reading. If the spectrometer has a thermostat the temperature can be controlled.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Intrinsically Safe?
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Intrinsically safe (IS) is an adjective for equipment and wiring which is incapable of releasing sufficient electrical or thermal energy under normal or abnormal conditions to cause ignition of a specific hazardous atmospheric mixture in its most ignited concentration. The IS terminations and wiring may be brought into any hazardous location of any group classification for which it is accepted without requiring explosion proof housing or other means of protection.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Programmable?
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The fluorometer is able to be programmed to run special routines.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Self-calibration?
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Self-calibration is used to remove errors which remain after performing the regular calibration process.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Alarms?
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User-defined, programmable alarm levels.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Operating Temperature:
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This is the full required range of ambient operating temperature.
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Search Logic:
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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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