Model HC2930 is a fixed wavelength IR spectrophotometer
designed to perform repetitive quantitative analysis of
total hydrocarbons dissolved in non-absorbing solvent. Both
volatile and nonvolatile oily samples can be analyzed using
EPA methods 413.2 and 418.1. The instrument accommodates
standard IR Grade cuvettes and holders (see Hydrocarbon
Test Kit) of up to 100mm. Using a 100mm cell in the
concentration expansion mode permits analysis of hydrocarbon
levels as low as 0.05 ppm.
and hydrocarbons absorb in the near IR at 3.4 to 3.5 microns
(2930 cm-1). By dissolving the oil content of a sample into
fluorochlorocarbon (freon), which is nonabsorbing at 3.4
to 3.5 microns, and following the extraction procedure established
in EPA methods 413.2 and 418.1, a working curve is prepared
using blank solvent (freon) and known standards. Samples
are then compared to the calibration curve in direct ppm
readings shown on the instrument. Repeatability is +/-1%
on identical samples.
Model 2930 can also be used with hexane based EPA method
1664, which is an analysis technique that does not require
the use of freon as a solvent. A special cell is an optional
accessory for this freon-free technique.
Fixed 3.42 micron wavelength and 30 CM-1 bandwidth
allows quick 10 second analysis without unnecessary scanning.
Response time is a maximum of 40 seconds in damping 2 mode.
Furthermore, the operating range permits the use of stable
coated quartz optics that are not subject to degradation
Digital readout in %T, absorbance or concentration.
Ranges: 0-100% T; 0-2 absorbance units; and 0-1 and 0-0.1
concentration. Built in scale expansion. Direct ppm readout.
Recorder output is provided for optional recorder.
Built in curve linearizer. Higher concentrations
easily calibrated. Small footprint requires minimal benchspace.
Portable. Weight: 20 pounds. Dimensions: 14 W x 11
D x 10 H.
PbSe Peltier cooled detector provides signal to noise
ratio of >2500 to 1, instrument stability (drift) <0.01
absorbance units per hour and photometric accuracy of +/-1%.
Instrument is simple to master and use, requires
no maintenance, purging or special atmospheres and is warranted
for a full year. Source is enclosed to avoid open source
Electrical: 115/230v, 50-60 Hz, 80 watts.
HC 2930 Oil-in-Water Analyzer, with two (2) spare drive
belts and EPA Methods 413.2 & 418.1
HC 2930 with Hydrocarbon Test Kit (0017-4575)
Vessel Cell for Freon free (Hexane) method, EPA 1664
of 6 10mm pathlength IR grade Quartz cuvettes
square cuvette holder
ml bottle of Reference Standard oil for making dilute
reference standard for EPA Methods 413.2/418.1 with
NIST/USFDA/ASTM photometric certification
for Hexane Method Vessel Cell
standards in Hexane 50 ml. 10, 50 & 250ppm