1. The Indonesian Soil Laboratory Network
Lenita Herawaty, MSi
ted at the Third meeting of the Asian Soil Laboratory Network (SEAL
23-27 September 2019, Manila, Philippines
INDONESIAN SOIL RESEARCH INSTITUTE
IAARD, MINISTRY OF AGRICULTURE
http://balittanah.litbang.pertanian.go.id
2. 01 Background
02 National Cross Check Coordinator
03
PT. Coordination
sample preparation, statistic,
technical meeting
OUTLINE
3. Background
Laboratory : Since 1905
- Bogor, Indonesia Dutch colonial history,
Laboratory for Agroecology and ground research.
- Soil, Plant and Fertilizer analysis
Coordinator of national cross check : 1970
WEPAL (Wageningen Evaluation Programs for
Analytical laboratories : IPE (Plant) and ISE (soil)
(1970s)
4. EANET (Acid Deposition Monitoring Network in East
Asia) : Soil (1998s)
ASPAC (The Australian Soil and Plant Analysis
Council) operates a soil and plant tissue Inter-
Laboratory Proficiency Programmed : Soil (2016)
SEALNET (South-East Asia Laboratory Network ) :
Soil (2018)
FFTC (Food and Fertilizer Technology Center) (2018)
Taiwan : Soil, plant and rice grain
Background
5. National Cross Check Coordinator
Since 1970
Participant : 10 Labs
Unofficial activities : - QC lab
Time : 3 round/years
National Reference Laboratories
6. Accreditation
ISRI’s Laboratory accreditation :
1. -ISO/IEC 17025:2000 since 2005 (No 192-IDN)
- Updated 2014 (No. 864-IDN)
- Adjustment to ISO/IEC 17025 : 2017
• Certificate : LP-846-IDN: National Standardization
Agency of Indonesia
• Scope : Soil, Plant, Fertilizer, Irrigation Water
• 190 parameters
2. ISO /IEC 17043 : 2010 (Proficiency Test Provider)
• Certificate : PUP - 12 – IDN National
• Scope : Soil, Plant, Organic Fertilzer
9 test parameters Soil : pH, Org-C, N ;
Plant tissue : N, P, K OF : pH, Org-C, N
7.
8.
9. 97 Labs
70 Labs
member
PT
22 Labs
accredited
MoA
IAARD Soil
Lab
20 Lab
12 AIAT
accredited
(34 provinces)
21 Private
Labs
8
(2 University
accredited)
7 Research
Center
Accredited
ISRI currently carry out Proficiency Test for 70 Labs for Soil,
Plant Tissue and Organic Fertilizer
Participants
10. PT. Coordination
• Commodities : Soil, Plant and Organic Fertilizer
• Frequency : 1 time per year
SOIL
Texture, pH*, Org-
C*,N*, Av-P, CEC,
Ex-Bases, Ex-
Acidity
PLANT
N*,P*,K*,Ca,
Mg,S,Fe,Al,
Mn,
Cu,Zn,B
Organic
Fertilizer
pH*, Org-C*,
N*, P,K, Fe
Commodities : * (acreditate scope)
15. Statistic Used
4. Z-Score Robust Statistical Calculation
ZBi, between laboratories Z-score
Si - median (Si)
IQR (Si) x 0,7413
Zwi , within laboratory Z-score.
Di - median (Di)
IQR(Di) x 0,7413
ZBi =
Zwi =
Related to proficiency test. We have joined 3 proficiency tests conducted by :.
WEPAL (Wageningen Evaluation Programs for Analytical Laboratories: IPE (Plant) and ISE (soil)with University of Wageninge, Netherland as special commodities for soils and plant.
EANET (East Asia Network for Acid Deposition) based in Japan, the member was coming from various countries such China, Indonesia, Japan, Malaysia, Mongolia, Philippines, Republic of Korea, Russia, Thailand, Vietnam, Laos and Cambodia. The special commodities are for acid deposition monitoring in Indonesia includes for soil, water and air quality. Pusarpedal : monitoring acid deposition ( CIFOR Forest) ADORC Nigata Jepang,
ASPAC (The Australian Soil and Plant Analysis Council) operates a soil and plant tissue Inter-Laboratory Proficiency Programme. This ASPAC program was started since 2016, with specific for commodities test parameters of pH, EC, K-available, C-Organic and Phosphorous-exist (Bray & Olsen)
As one of the reference laboratoriesin the Agency for Agricultural Research and Development (Balitbangtan),
ISRI has the task of technical and human resources development for soil laboratories in the working unit scope of Balitbangtan.
One of the implementations, LP Balittanah has coordinated cross checking for soil, plant and organic fertlizer analysis.
In addition of accreditation and certification, our laboratory has got approved accreditation or certification which is released by an authority agency i.e.
1. ISO/IEC 17025 : 2008 (Testing Laboratory)
Certificate: LP – 846- IDN from National Standardization Agency of Indonesia
Scope: Soil, Plant, Fertilizer, Irrigation Water
For testing 190 parameters
2. ISO /IEC 17043 : 2010 (Proficiency Testing Provider)
Certificate: PUP - 12 - IDN
Scope:Soil, Plant, Organic Fertilzer
For testing 9 parameters
Participants :Research Center, University,Stakeholder,Private company
Guideline for statistic calculation :
Samples in amounts of 10-20 kg are homogeneous, then divided and put in several containers. Then choose a number (n ≥ 10) random packaging. From each container (subsample) homogenized again and taken two parts to be analyzed in duplicate then calculated value variance of sampling (Ss 2 ) and the variance of repeatability analysis (Sa 2 ). Both values are each obtained from MSB (mean square between) and MSW (mean square within)
the first data used analytes content data
from the homogeneity test results. The second data obtained by analyzing when all participants had carried out a proficiency test.
Homogeneity of data can be seen visually from the form displaythe histogram.
Z values are Grouped in 3 categories :
1. means that between the results of the duplicate analysis (data I and data II) there is a difference large enough. Zwi's magnitude illustrates the precision in the laboratory.
2.means the results of the analysis do not include outliers, but are already in boundary "commemorated“
3. means the results of the analysis are satisfactory