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ISO/IEC 17043:2010
Proficiency Testing Program for Multiple-Laboratory/ Multiple Instrument Data Validation of Petroleum Products.
PITTCON 2012 Roland St. Germain* Mike Travers Tim Alavosus, Ph.D.
13 March 2012
VHG Labs' Original ProficiencyTesting Program (PTP)
VHG Labs has developed a Proficiency Testing Program (PTP) to measure:
Elements in oil by ICP or RDEKinematic ViscosityElements in Lube oil by XRFSulfur in various matricesPB Lead in Isooctane
Proficiency Testing
Program
(PTP)
What is Proficiency Testing?
Proficiency Testing is a regular evaluation of your laboratory instrumentation as compared to independent certified reference materials.
Many laboratories rely on their own instrument calibration techniques as their sole method of calibration verification.
Why Use Proficiency Testing?
Specific Benefits of Regular Proficiency Testing:
1. Confirm Instrument Performance
2. Demonstrate Competitive Advantage
3. Provide Greater Confidence Levels for Your Lab’s Customers
4. Shift/Operator Verification
There can often exist a bias from one instrument to another of the same general type based upon:
design (i.e., different mfg or model)operating parametersmethodologyconditions usedenvironmental factors.
Why Use Proficiency Testing?
It is useful to have a program that regularly determines the relative correlation of one or more instruments within the same laboratory facility or different locations.
Why Use the PTP?
More about Proficiency Testing
Historically, Proficiency Testing often used a Round-Robin approach.
– This method is painful and tedious.– It takes so long, it is a poor method of
instrument evaluation, as so many parameters are likely to change over time.
– It does not benefit from the use of modern technology and instant performance evaluation
How the original VHG PTP Works:
You order the type of test(s) you want
PTP is sent directly to your lab with login password
You run the samples at your convenience, whenever you want
Enter results into www.vhglabs.com
You Receive the results IMMEDIATELY!
Proficiency Testing Program (PTP) from VHG Labs
VHG Labs’ PTP provides a method for validation of ICP, XRF and viscosity.
The VHG Labs PTP is currently the only program of its kind to provide an instant response to submitted values, with convenient color-coded pass/fail indications in green (pass), yellow (borderline), and red (fail).
In case you asked…
Currently Assigned Values for ICP Metallo-organic PTP test
For all certified values > 20 ppm:Green = within +/- 10%Yellow = within +/-15%Red > 15%
< 20 ppm:Green = within +/- 1ppmYellow = within +/-2ppmRed > 2ppm
These values may be customized as an added-value option.Color feature not available for Viscosity tests.
The PTP User Interface
ALL ONLINE:
Simply type in your results…
Then:100
105
112
121
102
100
The PTP User Interface
Validation is automatic and instantaneous
In ICP analysis, there are several common possible sources of error:
– Sample Preparation
– Sample Introduction Sipper Probe Pump Tubing Nebulizer Torch: O-rings, fittings,
and connections -Possible air leaks
How Does the PTP Help?
VHG NEW ISO 17043 PTP
The new PTP is designed to provide laboratories with a method of monitoring their analytical performance measured against samples that are ISO/IEC 17043 compliant.
ISO/IEC 17043:2010
VHG Labs PTP incorporates the requirements for 17043:
Normalized Error (En).
(Note: 17043 response is not
instantaneous)
ISO/IEC 17043:2010
Takes performance testing further Provides guidelines for error ranges These are based on calculations of
laboratory uncertainties These uncertainties are called
“Normalized Error”, or En You can calculate this easily
ISO 17043: Normalized Error
En is “error, normalized” and is calculated as:
En = (xlab – xVHG )/√(U2lab + U2
VHG )
Where: xlab is your analytical result
xVHG is the VHG Certified Value Ulab is the expanded uncertainty that you reportedUVHG is the expanded uncertainty of the VHG
Certified Value (95% coverage)
Basis for Pass/Fail Criteria
Pass = -1< En <+1 (Green)
Fail = En <-1 or En > +1 (Red)
ISO/IEC 17025 PT
ISO Registrars strongly recommend the use of ISO 17043 PTP when performing required Proficiency Tests for ISO/IEC 17025 accreditation.
User interface
Entering Your Data
Entering Your Data
Specific Benefits of Regular Proficiency Testing:
1. Confirm Instrument Performance
2. Shift/Operator Verification
3. Demonstrate Competitive Advantage
4. Provide Greater Confidence Levels
Thank You!
For more information, please contact:
Roland St. GermainVHG Labs276 Abby Rd. Manchester, NH 03053(+1) [email protected] BOOTH 3566