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3. XRF Testing
1) Suppliers must carry out a XRF Test by the unit of homogeneous materials in parts.
* Homogeneous material means a unit that cannot be mechanically disjointed into single materials.
- Standards: Distinguish between organic/inorganic ( Unit: ppm, error tolerance 15% )
Type of
MaterialCd Pb Hg Cr Br Cl Sb Sn* S*
Organic
(Recycled
resin)
50200
(140)700 700
900
(630)900 700 900
Rubber:30,000
Package:10,000
Inorganic 70 700 700 700 - - 700 -
* Sn, S: Voluntary management by considering properties of the suppliersequipment/parts.
* Refer to Guide of XRF Test of partsin P-EHS for standards regarding separation and testing
of homogeneous material
2) Setting up test recipe for parts: Set up recipe through equipment maker
Maker Types of material Details
Hitachi
Metal - SUS, Cu, Zn alloy
Plastic
- Composite materials of organic + inorganic : H/W parts
- Plastic, paints, paper, wood, leather, glass, ceramic
- Light metals : Al / Mg alloy
Shimadzu
Inorganic - SUS, Al, Mg, Cu, Zn alloy, category of SOLDER
Organic- Composite materials of organic + inorganic : H/W parts
- Plastic, paints, paper, wood, leather, glass, ceramic
NAVI ver - When you cant classify organic and inorganic
Etc. - - Follow the equipment manufacturers guide
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4. Spot Test of surface treated parts
1) Spot-test of Hexavalent chromium- Target: Chromium plating parts, chromate treated parts, parts detected with over
700ppm during XRF test
- Preparation of reagent and test apparatus
Category Name Spec The amount of use
Reagent
1.5-Diphenyl Carbazide 98% 0.4g
Water Ultrapure water 23ml
Ortho-phosphoric acid 85% 17ml
ethanol 99.9% 20ml
Acetone 99.7% 20ml
Test apparatus Scale, Beaker, Spuit, Reagent spoon, Measuring flask, Hood
[ Pictures ]
- Method of manufacturing for test
Mix 0.4g Diphenylcarbazide, 20ml Acetone, and 20ml Ethanol.
Mix 17ml of 85% Phosphoric acid with 23ml of water.
Mix the result of and .
* You must use the manufactured reagent within 4~8hr because of discoloration.
- Detail GUIDE
If Hexavalent chromium is detected, then color will turn red within one
minute. If there is no change, judge as pass.
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For effective judgment, place the white paper under the reagent bottle.
Its impossible to judge after several minutes has passed from making the reagent
In case of large size sample, pour the reagent over the sample and collect the
reagent in a beaker. Then judge the color of the reagent.Rub a wide area more than 10 times using the cotton swab with the reagent.
- Judgment
Pass if there is no change in color, fail if the solution turns red.
2) Spot-test of Nickel (DMGO)
- Target: External components intended to come into direct and prolonged contact
with the skin
- Preparation of reagent and test apparatus
Category Name Spec The amount of use
Reagent
Dimethylglyoxime(DMGO) Powder 0.8g
Ammonia water 28% 35.7ml
Ethanol 99.9% 100ml
Water Ultrapure water 64.3ml
Test apparatus Scale, Beaker, Pipette, Reagent spoon, Measuring flask,
- Method of manufacturing for test
DMGO (Powder) 0.8g + Ethanol (liquid) = Total 100ml (In Measuring flask)
Ammonia water(28%) 35.7ml+ D.I Water = Total 100ml (In Measuring flask)
Mix and at a 1:1 ratio in a beaker using a pipette.
Rub the surface more than 10 times using the cotton swab with solution
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