Item 5 aspac presentation ot south pacific labs 17 10_19
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ASPAC | Pacific network of soil laboratories: 1st meeting. Brisbane, Australia, 17 - 18 October 2019.
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Item 5 aspac presentation ot south pacific labs 17 10_19
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- 2. 0 10 20 30 40 50 60 70 80 90 100 Al B Cd Ca C Cl Co Cu Fe Pb Mg Mn Mo N P K Se Na S Zn Median* Robust CV's over time (*12 plants per year) 2004/05 2005/06 2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15 2015/16
- 3. 3 A- Chromium reducible S B- 1M KCl extractable S after peroxide oxidation C- 4M HCl extractable S D- 1M KCl extractable S E- Titratable actual acidity F- Titratable peroxide acidity. G- Acid neutralizing capacity by back titration.
- 4. 4 The relationship between 1:5 soil/water pH grand median values (method 4A1) and final robust grand median %CVs for exchangeable Al (method 15G1) for 11 soils (soil ASS34 excluded) used by ASPAC in 2008-09. y = 27.84x-0.337 R族 = 0.8892 0 20 40 60 80 100 120 140 160 180 0 5 10 15 20 25 % CV (Y) vs Exch Al (15G1) 2007-08
- 5. ACIAR Laboratory QA/QC Workshop - HoChiMinh City November, 2004 NRSL IND Laboratories - Printed: 11/10/04 - File: BIN_PBX.DAT BIN_BICARB-P Replicated results X-bar: cl: 62.7679 ucl: 74.2287 lcl: 51.3071 * Rule violation Subgrp Size 2 X-bar cl lwl uwl lcl ucl 50 55 60 65 70 75 DATE: 4/7/02 19/08/02 23/10/02 7/4/03 26/6/03 14/10/03 12/2/04 15/7/04
- 6. ACIAR Laboratory QA/QC Workshop - HoChiMinh City November, 2004 NRSL IND Laboratories - Printed: 11/10/04 - File: BIN_PBX.DAT BIN_BICARB-P Replicated results X-bar: cl: 62.7679 ucl: 74.2287 lcl: 51.3071 * Rule violation Subgrp Size 2 X-bar cl lwl uwl lcl ucl 50 60 70 80 DATE: 28/6/00 10/11/00 21/05/01 29/10/01 1/03/02 30/07/02 9/5/03 1/9/04
- 7. Take the UN out of UNCERTAINTY In theory, if a valid estimate of uncertainty of measurement has been made, a laboratory would have 95% confidence that the true concentration of an analyte would fall inside the MU limits ie. Xi (your result) 賊 U ASPAC encourages laboratories, involved in the Soil Chek and Plant Chek programs, to provide your estimates of uncertainty for tests to Global Proficiency. They will provide back to you an Uncertainty of Measurement Summary each round: Ratings will be provided for each test based on the following: Good = the mean falls within 100% of a results uncertainty range Warning = the mean falls outside uncertainty of measurement (>100%) but is less than 150%. Action = the mean falls outside 150% of uncertainty of measurement (investigation recommended) eg outlier observed or uncertainty estimate too narrow.
- 8. How ASPAC runs the proficiency programs what we ask and expect labs to do. ASPAC provides proficiency samples that have already been dried, ground and mixed thoroughly. They are sent to participants homogenous and tested to demonstrate same. For soils they have been air dried (equivalent to oven dried @ 40 deg C to constant weight). They have been ground to <0.5 mm, which is finer than labs should be preparing soils for empirical soil tests (ie < 2mm). Reason hard to provide a homogenous sample when particulate size is <2mm. For the Soil Chek program, participants should analyse the soils as received. No need for any more sample prep. For plants, we ask they be dried again @ 65 deg C to constant weight. A laboratory gets certification for a soil test when it demonstrates satisfactory performance in the SoilChek program over a twelve month period (3 rounds x 4 soils per round), bearing in mind the way the program is run and the protocols set by ASPAC. Certification only lasts for 12 months. To get the most out of SoilChek or PlantChek program, you will need to treat all samples routinely where possible, and test by the standard procedures used in the laboratory i.e. only conduct tests you routinely perform and only test in duplicate if that is the normal test procedure.
- 9. ILPPs run by ASPAC in 2016 9 50 tests certifiable depending on test, 10-52 labs provided results total of 59 labs (Aust. 41; NZ 7, PNG 2, Fiji 2, Thailand 2, Vietnam 2, Indonesia 1, Laos 1, Philippines 1) 21 tests certifiable depending on test, 7-35 labs provided results total of 39 labs (Aust. 27; NZ 7, PNG 2, Fiji 2, China 1) Acid Sulfate Program 16 tests certifiable depending on test, 7-17 labs provided results total of 20 labs, all from Australia
- 10. ILPPs run by ASPAC in 2018 10 50 tests certifiable depending on test, 10-52 labs provided results total of 68 labs (Aust. 50; NZ 7, PNG 2, Fiji 1, Thailand 2, Vietnam 1, Indonesia 1, Laos 1, Philippines 1, Samoa 1, Guatemala 1) 21 tests certifiable depending on test, 7-35 labs provided results total of 45 labs (Aust. 36; NZ 6, PNG 1, Fiji 1, Guatemala 1) Acid Sulfate Program 16 tests certifiable depending on test, 7-17 labs provided results total of 18 labs, all from Australia
- 11. Tribute to Brian Daly Training laboratory technical staff was his passion and his contribution to the South Pacific Analytical Chemistry Laboratory Network (Spacnet) and to ASPAC soil and plant technician training workshops, over many years, was exemplary. He was a very good friend to so many and will be sadly missed. Some tributes paid by past Chairmen of ASPAC One of natures gentlemen Ken Peverill A warm, jolly and compassionate man Leigh Sparrow Brian was a pillar in the soil analysis community and was very highly regarded Roger Hill I enjoyed his company and always held him in the highest regard professionally. He was a great servant for ASPAC George Rayment