FertChek Proficiency Testing Scheme
The FertChek PT scheme has been designed for laboratories testing for chemical composition and properties of fertilisers most commonly used in Australasian agriculture.
FertChek ensures that Australasian fertiliser manufacturers have the opportunity to benchmark themselves within the Australasian fertiliser industry.
Global Proficiency Ltd works closely with the New Zealand Fertiliser Quality Council by providing data analysis and interpretation which aids in the standardisation of reference methods.
FertChek Schedule
Proficiency materials for the FertChek Program are dispatched every 3 months (refer timetable). Participants are given 4 weeks to analyse samples and return results.
FertChek Sample Description
A sample set containing 2 individual samples from any of the following fertiliser materials are currently offered in FertChek:
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Superphosphate
-
Potassic Superphosphate
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Sulphur Superphosphate
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Phosphate Rock
-
Serpentine Superphosphate
-
Lime
Suggestions and requests from participants are welcome.
FertChek Test Details:
- Total Phosphorus
- Citric Acid Soluble Phosphorus
- Ammonium Citrate Soluble Phosphorus
- Moisture
- Cadmium
- Calcium
- Fluoride
- Grist Test
- Mercury
- Lead
- Potassium
- Sulphate Sulphur
- Free Acid (as H3PO4)
- Free Acid (as P)
- Sulphate-Suphur (as S)
FertChek Reporting
Statistical summaries and reports are e-mailed to participants within 2 weeks after the due date for results. These provide information about the data pool of participating laboratories, comparing the laboratory's test results with those of other participating laboratories and include:
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An individual rating per sample
- An assessment of bias for the set of results
- An overall rating for the round
- A Youden Plot summarizing the performance of the various labs and a consolidated summary of the individual laboratory results
- A control chart showing performance year to date
Please Contact Us if you would like to find out more about FertChek, or if you would like to enquire about fertiliser reference materials.
