Interlaboratory Study Iis14p05

/ P.O. Box 200
NL-3200 AE Spijkenisse
the Netherlands
ing. R.J.Starink
Tel.: +31 181 69 45 41
Fax: +31 181 69 45 43
E-mail:

INTERLABORATORY STUDY IIS14P05

Metals in plastics2014

Report form AReport before September12, 2014

Sample #14150:

Determination / Unit / Reference method (*) / Actual method used(*) / Unrounded
result #14150 / result #14150
rounded cfr.
used standard
Total Antimony / mg/kg
Total Cadmium as Cd / mg/kg / EN1122
Total Chromium as Cr / mg/kg / IEC62321-5
Chromium as Cr6+ / mg/kg
Total Cobalt as Co / mg/kg
Total Lead as Pb / mg/kg / IEC62321-5
Total Mercury as Hg / mg/kg

Sample #14151:

(*) Please see letter of instructions

Name of laboratory: Date of sample receipt:

Country: City:

Name ofcontact person: Date of report

NBElectronic version of the report form is available on our internet site

/ P.O. Box 200
NL-3200 AE Spijkenisse
the Netherlands
ing. R.J.Starink
Tel.: +31 181 69 45 41
Fax: +31 181 69 45 43
E-mail:

INTERLABORATORY STUDY IIS14P05

Metals in plastics2014

Report form BReport before September 12, 2014

Analytical details for digestion on metals (excl. Cr(VI))

#14150 / #14151
How was the sample reduced? / Ground / Milled / Cut / Not *) / Ground / Milled / Cut / Not*)
What was final max. particle size? / ...... µm / as received / ...... µm /as received
Which metals were analyzed in this test solution?
How was the test solution prepared? / Dry Ashing*)
Acid digestion*)
Microwave*) / Dry Ashing*)
Acid digestion*)
Microwave*)
When dry ashing was used:
How long took the ashing?
When microwave was used:
What temperature program
was used? / Step1:
Step2:
Step3:
Step4: / Step1:
Step2:
Step3:
Step4:
What acid mixture was used?

*) please circle the right option

when the above boxes are too small for your answers, please use an extra page

remarks on #14150 / remarks on #14151

Please complete this sheet as much as possible, it can help to draw conclusions during the evaluation

Name of laboratory: Date of sample receipt:

Country: City:

Name of contact person: Date of report:

INSTRUCTIONS TO PARTICIPANTS

Please confirm sample receipt as soon as you have received and checked the contents of this package, preferably using the fax form that you receive together with this package. Please complete the form and send it immediately to iis (email: or faxno. + 31 181 69 45 43).

This interlaboratory study concerns 2 samples of plastic (nos. #14150 and #14151) for determination of total total Antimony,total Cadmium, total Cobalt, total Chromium, Chromium 6+, total Lead and total Mercury contents. You received approx. 5 grams of each sample. Please treat the samples as if they were routine samples and analyse them in the way you would normally do in day-to-day circumstances.

Report the test results using the indicated units on the report form. Report in the last column the test results, rounded in accordance with the test method that was used. Report in the first result column the same test results but less rounded (we suggest to report one extra significant figure) in order to give more meaningful statistical calculations. Also pleasedo not report ‘less than’-results that are above your detection limit. Results reported as ‘less than’ cannot be used for meaningful statistical calculations.

On report form A an extra column is added. The header of this column is ”reference method”. In this column the method is mentioned, that the Institute for Interlaboratory Studies will use for calculation of the z-scores. It is of utmost importance to know that the method, that is mentioned, is NOT mandatory. So when you normally use in day-to-day circumstances another test method than the method mentioned in the ”reference method” column, please use your test method and note the name of this actual used method in the ”actual method used” column.

Complete the report form B with the requested details of the analysis performed.

In order to avoid mix-up of test results we have added a box for your laboratory code. Please understand that it is not mandatory to use, but it will facilitate identification of your test results.

Please return the completed report form to iis in the Netherlands, preferably one week after sample receipt, but in any case before the indicated closing date, September 12, 2014(preferably by email).

If you have any remarks/questions please contact:

Ing R.J. Starink, Institute for Interlaboratory Studies

P.O. box 200, NL-3200 AE Spijkenisse, the Netherlands

Tel.no. + 31 181 694541, Fax no. + 31 181 694543, E-mail:

NBElectronic version of the report form is available on our internet site