Participant´s protocol on a PT 25/3Proficiency Test

PT of non-ferrous metal

Objectof PT 25/3

Determination of Al, Cu, Pb, Fe, Ni, Cr, Cd, In, Sn in zinc alloy (Zn > 99.5%) ~ (Al < 0.20%, Cu < 0.003%, Pb< 0.05%, Fe < 0.05%, Ni < 0.01%, Cr < 0.01%, Cd < 0.05%, In < 0.05%, Sn < 0.05%) by Atomic Emission and X-Ray Fluorescence spectrometries on a plane of solid sample or methods of wet – way analysis.

Time of PT 25/3:September2017PT deadline : 12th October 2017

Test participant

Working place:

Address:

Phone/fax:

E-mail:

Date of sample receipt:

Date of analysis:

Name and signature of analyst:

Name of supervisor responsible for the results validation (stated in certificate):

Date and signature: Laboratory stamp:

An integral part of this PT 25/3 protocol are methodical instructions with possible participant´s comments and tabulated results. The results will be processed under a code number only so the participant´s identity may not be disclosed.

The protocol PT 25/3 and PT programme (including time schedule) is also available online for download at our homepage:

Please send the filled-out form (as Microsoft Word file) as attachment to our e-mail:

The title page of the protocol, however, should be the signed (and stamped) and scanned and attached to the same e-mail, preferably in PDF format.

It is not necessary for our purposes to receive the originals in print by mail, the electronic version suffices. We also hope to save you effort and expanses in this way.

Methodical instructions for PT 25/3 participants

Prior to analysis of a PT 25/3 sample please the calibration should be validated by the regular procedure as per the laboratory Q. A. instructions.

Please identify a main or prevailing RM used for the calibration:

List the elements, for which a correction was applied:

Instruction to the analysis

Fill the results of five paralel determinations in the tables of the protocol*. The number of digits should comply with that in the approximate values indicated in the top of tables.

*If more than one technique is applied (AES and RFS, AES and wet-way analysis), please give the particular sets of results in separed copies of the protocol. Each participant will be assigned his code number for each method applied. The same principle may be used for stable and mobile instrument.

Participant´s comments

Please mention below any comment concerning conditions that may have affected your results in the PT 25/3:

Table of analysis results of PT 25/3 sample

1. / 2. / 3. / 4. / 5.
% / Al / (< 0.200%)
% / Cu / (< 0.0030%)
% / Pb / (< 0.0500%)
% / Fe / (< 0.0500%)
% / Ni / (< 0.0100%)
% / Cr / (< 0.0100%)
% / Cd / (< 0.0500%)
% / In / (< 0.0500%)
% / Sn / (< 0.0500%)

The methods of analysis

Fill in following information (check the proper one)

AES and RFS

Method (AES, RFS): / AESRFS
Instrument category (stable, mobile): / STABLEMOBILE
Excitation source (spark, arc, glow discharge): / SparkArcGlow discharge

Other methods of analysis

Element / Al / Cu / Pb
Method
Element / Fe / Ni / Cr
Method
Element / Cd / In / Sn
Method