ASTM F1500-98
(Test Method)Standard Test Method for Quantitating Non-UV-Absorbing Nonvolatile Extractables from Microwave Susceptors Utilizing Solvents as Food Simulants
Standard Test Method for Quantitating Non-UV-Absorbing Nonvolatile Extractables from Microwave Susceptors Utilizing Solvents as Food Simulants
SCOPE
1.1 This test method is applicable to complete microwave susceptors.
1.2 This test method covers a procedure for quantitating non-UV-absorbing nonvolatile compounds which are extractable when the microwave susceptor is tested under simulated use conditions for a particular food product.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 1500 – 98
Standard Test Method for
Quantitating Non-UV-Absorbing Nonvolatile Extractables
from Microwave Susceptors Utilizing Solvents as Food
Simulants
This standard is issued under the fixed designation F 1500; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.2 nonvolatile extractables—those chemical species
which released from microwave food packaging under simu-
1.1 This test method is applicable to complete microwave
lated use conditions and are detected using an applicable
susceptors.
nonvolatile extractables method.
1.2 This test method covers a procedure for quantitating
non-UV-absorbing nonvolatile compounds which are extract-
4. Summary of Test Method
able when the microwave susceptor is tested under simulated
4.1 Nonvolatile extractables are determined by subjecting a
use conditions for a particular food product.
sample of the susceptor material to microwave heating under
1.3 This standard does not purport to address all of the
simulated use conditions. The sample is washed with solvents
safety concerns, if any, associated with its use. It is the
covering a range of polarities. The solvent washes are com-
responsibility of the user of this standard to establish appro-
bined and the solvents evaporated just to dryness. The residue
priate safety and health practices and determine the applica-
is redissolved in a measured quantity of chloroform and the
bility of regulatory limitations prior to use.
sample split for gravimetric or other analyses, such as HPLC or
2. Referenced Documents IR. For the gravimetric determination, a measured portion of
the sample is filtered and evaporated and the residue weighed.
2.1 ASTM Standards:
For other analyses, the remainder of the sample is evaporated
E 260 Practice for Packed Column Gas Chromatography
and may be reconstituted in dimethylacetamide prior to injec-
E 682 Practice for Liquid Chromatography Terms and Re-
tion (see Test Method F 1349 for quantitation of UV-absorbing
lationships
nonvolatiles by HPLC), or treated appropriately prior to
E 685 Practice for Testing Fixed-Wavelength Photometric
examination by other chromatographic or spectroscopic meth-
Detectors Used in Liquid Chromatography
ods.
F 874 Test Method for Temperature Measurement and Pro-
filing for Microwave Susceptors
5. Significance and Use
F 1317 Test Method for Calibration Method for Microwave
5.1 This test method was developed to measure non-UV-
Ovens
absorbing nonvolatile extractables that may be present and
F 1349 Test Method for Nonvolatile Ultraviolet (UV) Ab-
3 migrate from a microwave susceptor material during use. It
sorbing Extractables from Microwave Susceptors
may be a useful procedure to assist in minimizing the amount
3. Terminology of non-UV-absorbing nonvolatile extractables either through
susceptor design or manufacturing processes.
3.1 Definitions of Terms Specific to This Standard:
5.2 Supplementation of this procedure with other analytical
3.1.1 microwave susceptor—packaging materials that,
technologies such as high-pressure liquid chromatography,
when placed in a microwave field, are designed to interact with
supercritical fluid chromatography, or infrared or other forms
the field and provide substantial heat to the package contents.
of spectroscopy may provide the analyst with additional
information regarding the identification of the components of
This test method is under the jurisdiction of ASTM Committee F-2 on Flexible
the non-UV-absorbing nonvolatile extractables in the suscep-
Barrier Materials and is the direct responsibility of Subcommittee F02.30 on Test
tor.
Methods.
Current edition approved Oct. 10, 1998. Published January 1999. Originally
published as F 1500 - 94. Last previous edition F 1500 - 94.
Annual Book of ASTM Standards, Vol 14.01.
Annual Book of ASTM Standards, Vol 15.09.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
F1500–98
6. Apparatus and Reagents 8.3 Place the precut susceptor sample into the bottom
section of the Waldorf cell. Carefully place the polytetrafluo-
6.1 Microwave Oven, 700 6 35 W, no turntable, calibrated
roethylene polymer (PTFE) gasket on top of the susceptor to
in accordance with Test Method F 1317.
prevent tearing when the cell sleeve is threaded in. Thread the
6.2 Extraction Cell, Waldorf, described in Test Method
top sleeve of the cell into the bottom section of the cell,
F 1349.
5 trapping the susceptor sample securely between the gasket and
6.3 Microwave Temperature Measurement System.
the bottom of the cell.
6.4 Temperature Probe, high temperature.
8.4 Carefully insert a temperature probe (6.4) through the
6.5 Beaker, 400-mL borosilicate glass.
small temperature probe port opening of the cell and ensure
6.6 Hexane, analytical reagent grade or better.
that it maintains good contact with the susceptor surface. Insert
6.7 Acetonitrile, analytical reagent grade or better.
a second probe onto a different area of the susceptor in the
6.8 Methylene Chloride, analytical reagent grade or better.
same way.
6.9 Chloroform, analytical reagent grade or better.
8.5 Place 50 mL of distilled water and a boiling chip into a
6.10 Dimethylacetamide, HPLC grade or better.
400-mL beaker and place the beaker in the center rear of the
6.11 Methanol, analytical reagent grade or better, dried over
oven. Place a watchglass over the opening of the Waldorf cell.
anhydrous sodium sulfate.
8.6 Place the Waldorf cell in the center of the microwave
6.12 Distilled Water.
oven, and microwave the sample on high power for the time
6.13 Nitrogen, grade suitable for solvent evaporation pur-
determined during the temperature profiling procedure.
poses.
8.7 Compare the temperature profiles obtained in 8.6 with
6.14 Rotary Evaporator, or equivalent.
those obtained from the susceptor in contact with product. If
6.15 Weighing Boat, aluminum, formed by shaping alumi-
num foil into a round boat approximately 1.5 cm in diameter. the two profiles are in reasonable agreement, proceed to 8.8,
otherwise repeat 8.3 through 8.6, using more or less water in
6.16 Filter, 0.45 μm, compatible with chloroform.
6.17 Round-Bottom Flask, 250 mL, with neck to fit rotary the beaker to adjust the profile appropriately.
evaporator. 8.8 Without removing the sample, watchglass, or fiber optic
6.18 Vial,20mL. probes from the cell, allow the sample to cool for 5 min.
6.19 Heat Lamp, 125 W, or equivalent. 8.9 Remove the temperature probe(s) from the cell. Rinse
6.20 Boiling Stones.
the bottom of the watchglass covering the Waldorf cell with 20
6.21 Watchglass, 8.5 or 9.0-cm diameter. mL of hexane, pouring the solvent into the cell. Swirl the
solvent in the cell for 10 s, then pour it into a 250-mL
7. Sampling
roundbottom flask. Repeat using a second 20-mL aliquot of
7.1 The sample of microwave susceptor selected for extrac-
hexane.
tion should be representative of the entire susceptor.
8.10 Repeat 8.9 using two 20-mL aliquots of methylene
7.2 The sample should be undamaged, that is, lamination
chloride.
intact, uncreased (unless this is the normal configuration) and
8.11 Repeat 8.9 using two 20-mL aliquots
...
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