The organization of national PTs in Indonesia - Laili Purnamasari, Laboratorium Pengujian Balai Penelitian Tanah, Indonesian Soil Research Institute, Indonesia 4th Asian Soil Laboratory Network (SEALNET) meeting (online), 30 June - 2 July 2020

1. THE ORGANIZATION OF NATIONAL
PROFICIENCY TEST IN INDONESIA
Fourth Meeting of
the Asian Soil Laboratory Network (SEALNET)
30 June – 2 July 2020
Dr. Ladiyani Retno Widowati

2. Based on Mutual Recognition Agreements (MRA) between APAC-
ILAC/ IAF and National Standardization Agency (Badan Standarisasi
Nasional) Indonesia on ISO/IEC 17025 (Testing and Calibration),
ISO/IEC 17043 (PTP)  The National Accreditation Committee
provides recognition to the Testing Laboratory and Proficiency Test
Providers in Indonesia :

4. INTRODUCTION
 Indonesian Soil Research Institute (ISRI) Laboratory or
LP Balittanah accredited with SNI ISO/IEC 17025: 2017
since 2004 with #LP-846-IDN, including 190 parameters
accredited
 ISRI Laboratory is a coordinator laboratory for 26
testing laboratory under Agency for Agricultural
Research and Development (AARD) (soil, plant,
fertilizer, water)
 ISRI Laboratory is a reference laboratory of the Ministry
of Agriculture for fertilizer analysis (in-organic, organic,
biofertilizer and soil amendment)

5. INTRODUCTION
 ISRI laboratory has carried out a cross-checking
laboratory tests in Indonesia since 2007 for soil dan
plant tissue analysis
 ISRI was accredited according to SNI ISO/IEC 17043:
2010 since 2017 with # PUP-012-IDN for commodity :
 Soil (pH, C-Organic, N-Kjeldahl)
 Plants (N-Kjeldahl, P-Total, K-Total)
 Organic Fertilizers (pH, C-Organic, N-Kjeldahl)

6. PTs ISRI
 Proficiency Test was conducted 1x/year with scope
: soil, plant and organic fertilizer
 The members was 103 laboratories with active
member 80-90 laboratories from :
 Government (35)
 University (15)
 Private company (53)
 Criteria for PT’s members for SNI ISO/IEC 17025:
2017
 has been accredited,
 in the process of accreditation and
 Not accredited

7. PROFFICIENCY TEST FLOW

8. THE SCOPE OF ACCREDITATION
Soil
- pH
- C-organic
- Nitrogen-Kjeldahl
Organic Fertilizer
- pH
- C-organic
- Nitrogen - Kjeldahl
Plant Tissue
- Nitrogen
- Phosphorus
- Potassium
The samples was
prepared by ISRI

9. • Non-accredited parameters :
Texture : sand, silt, clay
P2O5 Olsen/ Bray
Ca-dd
Mg-dd
K-dd
Na-dd
CEC
Al-dd
H-dd
Total-Ca
Total-Mg
Total-Na
Total-S
Total-Fe
Total-Al
Total-Mn
Total-Cu
Total-Zn
Total-B
P2O5-Total
K2O-Total
Fe-Total

10. PTs ISRI RESULT 2018
No.
Proficiency
Testing
Program
Parameters
(type of test)
Number of
Participants
% Participants
(Unsatisfactory)
% Participants
(Questionable)
% Participants
(Satisfactory)
1 Soil pH 56 3.6 8.9 87.5
N-Kjeldahl 56 7.1 7.1 85.7
C-organic 57 1.8 12.3 86.0
2 Plant tissue Nitrogen 50 16.0 6.0 78.0
Phosphate 51 15.7 3.9 80.4
Potassium 48 14.6 8.3 77.1
3 Organic
fertilizer
pH 53 0.0 3.8 96.2
N-Kjeldahl 54 0.0 3.7 96.3
C-organic 56 0.0 0.0 100.0

11. PTs ISRI RESULT 2019
No.
Proficiency
Testing
Program
Parameters
(type of test)
Number of
Participants
% Participants
(Unsatisfactory)
% Participants
(Questionable)
% Participants
(Satisfactory)
1 Soil pH 67 0.0 9.0 85.1
N-Kjeldahl 65 18.5 13.8 53.8
C-organic 66 25.8 9.1 65.2
2 Plant tissue Nitrogen 57 24.6 7.0 68.4
Phosphate 56 19.6 12.5 67.9
Potassium 52 11.5 11.5 73.1
3 Organic
fertilizer
pH 63 3.2 3.2 88.9
N-Kjeldahl 61 18.0 8.2 73.8
C-organic 61 18.0 16.4 50.8

12. THANK YOU
TERIMAKASIH