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UILI-ILP (Inter-Laboratory Practice 6th) 

December 16, 2011

1. Name of Testing

UILI-ILP (Inter-Laboratory Practice 6th)
“Metals in Saline Water”

2. Provider

ILP Committee, Union Internationale des Laboratoires Indépendants (UILI)


(a) Deadline of Application: January 31, 2012
(b) Distribution of Testing Sample: Middle of February 2012
(c) Deadline of Reporting: March 31, 2012
(d) Issue of Final Report: August 31, 2012

4. Method of Participation

Send E-mail to Ms. Francine Fortier (UILI Secretary)
    Please notify the information below in your email.
(a) Full name of your company/organization/institution and laboratory
(b) Postal address of your laboratory (including country name and zip code)
(c) Full name of contact person
(d) Phone number of contact person (including country code)
(e) E-mail address of contact person
(f) UILI Member or non-member

5. Participation Fee

(a) Participation Fee
   UILI Member:       200.00Euros (for 1 set, not for 1 bottle)
   UILI Non-Member:   300.00Euros (for 1 set, not for 1 bottle)

(b)Method of payment
Invoice will be sent to you via e-mail after application is completed.

(c) Participation Fee includes…..
   (1) Samples for the Testing
   (2) Shipping Charge of Samples
   (3) Final Report (electronic media; issued by UILI)
   (4) Certification/Diploma (printed paper; issued by UILI)
   (5) Shipping Charge of “Certification/Diploma”

6. Sample for Analysis

(a) Name of Testing Sample (printed on each label)
   (1) UILI-ILP Sample-2012 “Liquid-No.1”
   (2) UILI-ILP Sample-2012 “Liquid-No.2”

(b) Container of Testing Sample et al.
   (1) 100mL of sample is contained in 100mL volume plastic bottle.
   (2) There are 2 bottles per a set, a pair of different concentration for target compounds.

7. Target Compounds for Analysis

(a) Metals (6 items)

Cadmium (Cd)

Chromium (Cr)

Manganese (Mn)

Lead (Pb)

Copper (Cu)

Nickel (Ni)

(b) Expected Concentration Range

Target Compounds

Concentration Range (μg/L)



Cadmium (Cd)

1 - 100

1 - 100

Chromium (Cr)

1 - 100

1 - 100

Manganese (Mn)

1 - 100

1 - 100

Lead (Pb)

1 - 100

1 - 100

Copper (Cu)

1 - 100

1 - 100

Nickel (Ni)

1 - 100

1 - 100

(c) Samples have no “Assigned Value” such as “Reference Value” and/or “Certified Value” related for “True Value”.

8. Analytical Procedure

(a) Considering that the sample contains following ions, pre-treatment is required in this test.

Ions Contained

Approx. Concentration (g/kg)

















(b) Analytical method is not limited (provider do not instruct). Participating laboratory can select the method for pre-treatment and instrumental measurement. Report a selected method No. from a table in “ATTACHMENT” which is attached at the end of this announcement.

9. Repot of Analytical Results

Independent analyses are requested to be carried out twice from sample preparation. Report the “mean value” of these 2 data (Original data before the calculation of “mean value” is not needed. Statistical values such as “standard deviation” are not needed). If you cannot analyze twice (e.g. in case of sample lack), reporting one data is acceptable.

(a) Round reporting values in significant 3 figures, according to ISO31-0:1992, Quantities and units - Part 0: General principles, Annex B (Guide to the rounding of numbers).

(b) Report should be done by a data set of “Liquid-No.1” and “Liquid-No.2”.

(c) A “non-full set result” is acceptable (e.g. In case that your laboratory prefers to report only on ”Cadmium”, report only the result of “Cadmium”).

(d) Method Reporting

  1. Fill in the form “Result of Analysis” which is attached at the end of this announcement.
  2. Report No. of analytical methods (“Pre-treatment” and “Measurement by Instrument”) referring to “ATTACHMENT” (table (A) and (B)) which is attached at the end of this announcement.
  3. Use unit “μg/L” for reporting value.
  4. Please meet the deadline; March 31, 2012.

10. Issue of the Final Report by UILI

(a) Final report will be issued on August 2012 by electronic media for participants.

(b)The following methods will be adopted for statistical analysis. The report will include these statistics.

  1.  z-score: by ISO/IEC 17043 and related standards
  2. Quartile Method (robust statistics method): by APLAC “T001”
  3. Confidence Ellipse for Youden Plot” by ISO 13528

(c) As far as analytical methods were not designated for this test and median value is not always equal to “true value”, evaluation by statistic will be inadequate.

(d) A list of participating laboratories will be included in the report. The result of each laboratory will be shown by “laboratory identification numbers”. However, the relationship between the “laboratory identification numbers” and the “names of participating laboratories” will not be indicated. Your identification number will be informed in the letter attached, separated with the report.

11. Others

(a) This proficiency test is an International Proficiency Testing Program, a continual testing program scheduled by UILI.

(b) This proficiency test or the final reports on the test results is not aimed to assess the performance of the laboratories or relating personnel by the organizer of the test or third person. 

(c) Participants to this proficiency test will be issued a Certificate for Participation by UILI.

UILI-ILP Committee Member

UILI PositionNameRepresenting CountryName of Association
PresidentDr. Manahen Fernández AlonsoSpainAsociación Española de Laboratorios Independientes (AELI)
Former PresidentDr. Hideo TabataJapanJapan Environmental Measurement & Chemical Analysis Association(JEMCA)
Vice PresidentMr. Jan SoersBelgiumUnion Professionelle des Laboratoires d'Essais, d'Analyses et de Recherches (UPLEAR)
TreasurerMr. G G McInteeCanadaCanadian Council of Independent Laboratories (CCIL)
Secretary GeneralDrs Luc H A ScholtisNetherlandsVereniging van Raadgevend Scheikundige Laboratoria (VRS)


(A) Pre-treatment

No. Method

  1. Liquid-liquid extraction
  2. Solid phase extraction
  3. Co-precipitation
  4. Only dilution
  5. Direct Measurement
  6. Others

(B) Measurement by Instrument

No. Instrument

  1. Atomic absorption spectrophotometry (flame)
  2. Atomic absorption spectrophotometry (furnace)
  3. ICP-AES
  4. ICP-MS
  5. Ion-selective electrode
  6. Polarography
  7. Stripping voltammetry (anodic/cathodic/adsorptive)
  8. Neutron radio activation
  9. Colorimetry (absorptiometry)
  10. Spectrofluorometry
  11. Others

Result of Analysis

Target Compounds



Measurement by



Result of Analysis (μg/L)

Sample-2012 “Liquid-No.1”

Sample-2012 “Liquid-No.2”































Send result to (Ms. Francine Fortier) by March 31, 2012.   

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