Section 25214.4.1 Of Article 10.1.1. Metal-containing Jewelry From California Health And Safety Code >> Division 20. >> Chapter 6.5. >> Article 10.1.1.
25214.4.1
. In addition to the requirements of Section 25214.4, the
following procedures shall be used for testing the following
materials:
(a) For testing a metal plated with suitable undercoats and finish
coats, the following protocols shall be observed:
(1) Digestion shall be conducted using hot concentrated nitric
acid with the option of using hydrochloric acid or hydrogen peroxide.
(2) The sample size shall be 0.050 gram to one gram.
(3) The digested sample may require dilution prior to analysis.
(4) The digestion and analysis shall achieve a reported detection
limit no greater than 0.1 percent for samples.
(5) All necessary dilutions shall be made to ensure that
measurements are made within the calibrated range of the analytical
instrument.
(b) For testing unplated metal and metal substrates that are not a
class 1 material the following protocols shall be observed:
(1) Digestion shall be conducted using hot concentrated nitric
acid with the option of using hydrochloric acid or hydrogen peroxide.
(2) The sample size shall be 0.050 gram to one gram.
(3) The digested sample may require dilution prior to analysis.
(4) The digestion and analysis shall achieve a reported detection
limit no greater than 0.01 percent for samples.
(5) All necessary dilutions shall be made to ensure that
measurements are made within the calibrated range of the analytical
instrument.
(c) For testing polyvinyl chloride (PVC), the following protocols
shall be observed:
(1) The digestion shall be conducted using hot concentrated nitric
acid with the option of using hydrochloric acid or hydrogen
peroxide.
(2) The sample size shall be a minimum of 0.05 gram if using
microwave digestion or 0.5 gram if using hotplate digestion, and
shall be chopped or comminuted prior to digestion.
(3) Digested samples may require dilution prior to analysis.
(4) Digestion and analysis shall achieve a reported detection
limit no greater than 0.001 percent (10 parts per million) for
samples.
(5) All necessary dilutions shall be made to ensure that
measurements are made within the calibrated range of the analytical
instrument.
(d) For testing plastic or rubber that is not polyvinyl chloride
(PVC), including acrylic, polystyrene, plastic beads, or plastic
stones, the following protocols shall be observed:
(1) The digestion shall be conducted using hot concentrated nitric
acid with the option of using hydrochloric acid or hydrogen
peroxide.
(2) The sample size shall be a minimum of 0.05 gram if using
microwave digestion or 0.5 gram if using hotplate digestion, and
shall be chopped or comminuted prior to digestion.
(3) Plastic beads or stones shall be crushed prior to digestion.
(4) Digested samples may require dilution prior to analysis.
(5) Digestion and analysis shall achieve a reported detection
limit no greater than 0.001 percent (10 parts per million) for
samples.
(6) All necessary dilutions shall be made to ensure that
measurements are made within the calibrated range of the analytical
instrument.
(e) For testing coatings on glass and plastic pearls, the
following protocols shall be observed:
(1) The coating of glass or plastic beads shall be scraped onto a
surface free of dust, including a clean weighing paper or pan, using
a clean stainless steel razor blade or other clean sharp instrument
that will not contaminate the sample with lead or cadmium. The
substrate pearl material shall not be included in the scrapings.
(2) The razor blade or sharp instrument shall be rinsed with
deionized water, wiped to remove particulate matter, rinsed again,
and dried between samples.
(3) The scrapings shall be weighed and not less than 50 micrograms
of scraped coating shall be used for analysis. If less than 50
micrograms of scraped coating is obtained from an individual pearl,
multiple pearls from that sample shall be scraped and composited to
obtain a sufficient sample amount.
(4) The number of pearls used to make the composite shall be
noted.
(5) The scrapings shall be digested according to EPA reference
method 3050B or 3051 or an equivalent procedure for hot acid
digestion in preparation for trace lead or cadmium analysis.
(6) The digestate shall be diluted in the minimum volume practical
for analysis.
(7) The digested sample shall be analyzed according to
specification of an approved and validated methodology for
inductively coupled plasma mass spectrometry.
(8) A reporting limit of 0.001 percent (10 parts per million) in
the coating shall be obtained for the analysis.
(9) The sample result shall be reported within the calibrated
range of the instrument. If the initial test of the sample is above
the highest calibration standard, the sample shall be diluted and
reanalyzed within the calibrated range of the instrument.
(f) For testing dyes, paints, coatings, varnish, printing inks,
ceramic glazes, glass, or crystal, the following testing protocols
shall be observed:
(1) The digestion shall use hot concentrated nitric acid with the
option of using hydrochloric acid or hydrogen peroxide.
(2) The sample size shall be not less than 0.050 gram, and shall
be chopped or comminuted prior to digestion.
(3) The digested sample may require dilution prior to analysis.
(4) The digestion and analysis shall achieve a reported detection
limit no greater than 0.001 percent (10 parts per million) for
samples.
(5) All necessary dilutions shall be made to ensure that
measurements are made within the calibrated range of the analytical
instrument.
(g) For testing glass and crystal used in children's jewelry, the
following testing protocols for determining weight shall be used:
(1) A component shall be free of any extraneous material,
including adhesive, before it is weighed.
(2) The scale used to weigh a component shall be calibrated
immediately before the components are weighed using S-class weights
of one and two grams, as certified by the National Institute of
Standards and Technology (NIST) of the Department of Commerce.
(3) The calibration of the scale shall be accurate to within 0.01
gram.