AXIO | Proficiency Testing schemes 2026
Quantity of Matrix
Rounds per Year
Sample Code Matrix
Analytes
PT-MC-14D Skimmed milk powder
25g
Detection of Yersinia species; Yersinia enterocolitica
2
PT-MC-15D Skimmed milk powder
10g
Total anaerobic mesophilic count; Enumeration of anaerobic sulphite-reducing bacteria; Mesophilic anaerobic spores; Sulphite-reducing Clostridium spores 2 Total anaerobic mesophilic count Enumeration of anaerobic sulphite-reducing bacteria; Mesophilic anaerobic spores; Sulphite-reducing Clostridium spores 2
PT-MC-15F
Oatmeal
10g
PT-MC-16D Skimmed milk powder
10g
Total aerobic mesophilic count; Enumeration of Coliforms; Enterobacteriaceae; Escherichia coli Total aerobic mesophilic count; Enumeration of Coliforms; Enterobacteriaceae; Escherichia coli Enumeration of Staphylococcus species; Coagulase positive staphylococci; Bacillus species; Bacillus cereus Enumeration of Staphylococcus species; Coagulase positive staphylococci; Bacillus species; Bacillus cereus
12
PT-MC-16F
Oatmeal
10g
12
PT-MC-17D Skimmed milk powder
10g
6
12
PT-MC-17F
Oatmeal
10g
PT-MC-18D Skimmed milk powder
10g
Detection of Escherichia coli ; Enterobacteriaceae; Coliforms Enumeration of Escherichia coli ; Enterobacteriaceae; Coliforms 2 Detection of Escherichia coli ; Enterobacteriaceae; Coliforms Enumeration of Escherichia coli ; Enterobacteriaceae; Coliforms 2 Enumeration of Escherichia coli ; Thermotolerant coliforms 2 Enumeration of Escherichia coli ; Thermotolerant coliforms 1
PT-MC-18F
Oatmeal
10g
PT-MC-20D Skimmed milk powder
10g
PT-MC-20F
Oatmeal
10g
PT-MC-21
Lyophilised test material + Matrix
Vial + min. 25g
Detection of Campylobacter species in 10g; Campylobacter species in 25g
4
PT-MC-22D Skimmed milk powder
25g
Detection of Escherichia coli O157 (non-toxigenic strain) Detection of Escherichia coli O157 (non-toxigenic strain)
1
PT-MC-22F
Oatmeal
25g
3
PRODUCT HIGHLIGHT PT-MC-16 - Indicator Combination
This sample covers the enumeration of total mesophilic aerobic flora, coliforms, Enterobacteriaceae and Escherichia coli , all important criteria for indicating inadequate processing or post-processing contamination, and routinely tested in all food microbiology laboratories. We have several hundred laboratories participating in every round, testing either the food or dairy matrix. 12 in food matrix + 12 in dairy matrix
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