|
 Pacific™
O&G SPE Disk
For
the highest quality results at the lowest
cost
Method
1664 developed by the U.S. EPA, replaces the
use of Freon-113, a Class 1 CFC, as the extraction
solvent for the determination of oil and grease
and non-polar material. Method 1664 is a performance-based
method that requires the use of n-hexane as
the extraction solvent and gravimetry as the
determinative technique. Alternative extraction
and concentration techniques are allowed,
provided that the performance specifications
are met. In addition, QC procedures designed
to monitor precision and accuracy have been
incorporated into Method 1664A.
| Horizon
Technology Pacific O&G SPE Disks
continue to receive excellent results
from laboratories running EPA Method
1664A - for both recovery rates
and cost savings. |
|
These
rigorous QC requirements
can present challenges for some laboratories
moving away from Freon-113 based liquid-liquid
extractions. The “performance based” method
utilizes n-Hexane rather than Freon as
the extraction solvent. But, Hexane is
prone to form emulsions during LLE and
the hexane floats whereas Freon sinks.
SPE eliminates problems associated with
LLE using hexane. |
Using a combination
of advanced liquid handling
techniques, Horizon
Technology Pacific™ O&G SPE Disks,
and the Horizon Technology SPE-DEX®
3000XL Automated Extraction System, your laboratory
will receive the accuracy and consistency
of data you need to comply with EPA Method
1664A QC specifications.
|
Horizon
Technology offers the only fully-automated
SPE extraction system —
a complete turnkey Oil & Grease
solution for EPA Method 1664A.
|
|
 Each
laboratory is responsible for operating
a formal quality assurance program. For
Method
1664A, the minimum requirements include
an initial demonstration of laboratory
capability (IPR), MDL study, ongoing analyses
of standards and blanks (OPR), and analysis
of a matrix spike. |
Each
time a modification is made to Method 1664,
the laboratory is required to repeat the IPR
test and, if the detection limit will be affected
by the modification, the laboratory is also
required to repeat the MDL study.
The
data below was obtained from a Horizon Technology
customer, an independent petroleum refinery.
Pacific™ O&G Disks were utilized,
using a Horizon Technology automated extraction
system. In a comparison of the results for
SPE and LLE, the SPE data shows greater precision
and accuracy.
| Sample |
LLE
(mg/l) |
%
Recovery |
SPE
(mg/l) |
%
Recovery |
|
1
|
35.0
|
87.5
|
40.3
|
100.8
|
|
2
|
32.0
|
80.0
|
39.5
|
98.8
|
|
3
|
34.2
|
85.5
|
39.9
|
99.8
|
|
4
|
31.9
|
79.8
|
40.1
|
100.3
|
|
Average
|
|
83.2
|
|
99.9
|
|
Standard
Deviation
|
3.91
|
|
0.85
|
|
Call
today and request a sample pack
and discover the value that Horizon Technology
Pacific™
O&G SPE Disks can bring to your laboratory.
| Ordering
Information |
| Item
Description |
Part
Number
|
| Pacific™
O&G Disk - 47mm |
1664-47-HT
|
| Pacific™
O&G Disk - 90mm |
1664-90-HT
|
| Pacific™
Premium O&G Disk - 47mm |
1664-47-PHT
|
| Pacific™
Premium O&G Disk - 100mm |
1664-100-PHT
|
| Pacific™
O&G Fast Flow Pre-Filter - 47mm |
FFP-47-HT
|
| Pacific™
O&G Fast Flow Pre-Filter - 90mm |
FFP-90-HT
|
|
