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Analytical quality program of soil fertility laboratories

[Programa de Análise de Qualidade de Laboratórios de Fertilidade]

EPTIS factsheet 514446 | Last revision 2021-04-15 | URL: https://www.eptis.bam.de/pts514446 https://www.eptis.bam.de/pts514446

PT provider
PT provider PAQLF - Programa de Análise de Qualidade de Laboratórios de Fertilidade PAQLF - Programa de Análise de Qualidade de Laboratórios de Fertilidade
Based in Brazil
Language(s) Portuguese
Remarks PAQLF sends 12 soil samples yearly to the participants of PT( 3 samples per round). After each round, the labs receive a feedback of your performance, in order to help them to identificate errors sources. At the end of proficiency test, participants that reach the minimum coefficient for approval (70 % or more), get the right to buy "quality stamps" to stick on your reports, and also the right to use the seal "Laboratory Approved". The PT scheme is being prepared for accreditation submission
Product groups Soil, sludge, contaminated sites
Testing fields Analytical chemistry
Technical details
Test item Tested property Testing method
Soil pH in water Potentiometric analysis
P, K, Na available Mehlich-1 method
Ca, Mg, Al KCl 0,1 M solution
Total Acidity Calcium acetate 0,5 M
Texture (sand / clay / slime) Gravimetric Method (pipette)
Aims of the PT scheme
Target group of participants Soil Fertility Laboratories, no restrictions
Linked to specific legislation / standards Manual de Métodos de Análise de Solos da Embrapa, 2017
Additional, subsidiary aims
Number of participants 150
Accredited or otherwise reviewed by a 3rd party

Accredited by None on the basis of None


Operation is commissioned / requested by No
Fees and frequency
Participation fee R$ 1.200,00
Regularly operated Yes (Yearly)
Year of first operation 1994
Contact details of the PT provider
Provider Contact person
PAQLF - Programa de Análise de Qualidade de Laboratórios de Fertilidade
Caixa Postal 69

Phone: +55 19 33112720
Web: https://www.embrapa.br/solos/busca-de-solucoes-tecnologicas/-/produto-servico/878/programa-de-analise-de-qualidade-de-laboratorios---paqlf https://www.embrapa.br/solos/busca-de-solucoes-tecnologicas/-/produto-servico/878/programa-de-analise-de-qualidade-de-laboratorios---paqlf
Mr. Marcelo Saldanha
Phone: +55 19 33112720
Email: marcelo.saldanha@embrapa.br marcelo.saldanha@embrapa.br
If you find any mistakes please contact the responsible EPTIS coordinator in Brazil, Mr José Ricardo Bardellini da Silva. Mr José Ricardo Bardellini da Silva.
Any questions or problems? Please contact us at eptis@bam.de.
Application version: 1.23-SNAPSHOT.20230502124635-7925ae379a631fc1ececff45d2921c8db38877d5