AXIO | Proficiency Testing schemes 2026
Quantity of Matrix
Rounds per Year 7 (23D) 5 (23F)
Sample Code Matrix
Analytes
PT-MC-23
Skimmed milk powder (23D) Oatmeal (23F)
10g
Identification of yeast and mould to genus and/ or species level Enumeration of Yeast; Mould; Yeast and Mould (ISO 21527-1) Enumeration of Yeast; Mould; Yeast and Mould (ISO 21527-1)
PT-MC-23D Skimmed milk powder
10g
7
PT-MC-23F
Oatmeal
10g
5
PT-MC-24D Skimmed milk powder
10g 10g
Enumeration of lactic acid bacteria Enumeration of lactic acid bacteria
2 4
PT-MC-24F
Oatmeal
PT-MC-24HB Herb PT-MC-24SP Spice
Vial + 10g Enumeration of lactic acid bacteria Vial + 10g Enumeration of lactic acid bacteria
1 1 1
PT-MC-25D Skimmed milk powder
10g
Enumeration of aerobic psychrotrophic organisms Enumeration of aerobic psychrotrophic organisms Enumeration of Pseudomonas species; Detection of Pseudomonas species Enumeration of Pseudomonas species; Detection of Pseudomonas species Enumeration of Bifidobacterium species; Lactobacillus species; Combined Enumeration of Lactobacillus species and Bifidobacterium species
PT-MC-25F
Oatmeal
10g
1
PT-MC-26D Skimmed milk powder
10g
3
PT-MC-26F
Oatmeal
10g
3
PT-MC-27
Lyophilised test material
Vial
2
PT-MC-29
Tea
Vial + 10g Total aerobic mesophilic count; Enumeration of Coliforms; Coagulase positive staphylococci; Yeast; Mould; Yeast and Mould 1
PT-MC-32 PT-MC-33 PT-MC-34 PT-MC-35
Lyophilised test material Freeze-dried material
Vial Vial
Enumeration of Campylobacter species Identification of unknown organism (non pathogen) Identification of Salmonella species Colony count and calculation of number of microorganisms Quantitative Package (2 samples) Total aerobic mesophilic count; Enumeration of total coliforms; Enterobacteriaceae; Escherichia coli ; Bacillus cereus ; Coagulase positive staphylococci; Yeast; Mould; Yeast and mould Detection of coagulase positive staphylococci Quantitative Package (2 samples) Total aerobic mesophilic count; Enumeration of total coliforms; Enterobacteriaceae; Escherichia coli ; Bacillus cereus ; Coagulase positive staphylococci; Yeast; Mould; Yeast and mould Detection of coagulase positive staphylococci Quantitative Package (2 samples) Total aerobic mesophilic count; Enumeration of total coliforms; Enterobacteriaceae; Escherichia coli ; Bacillus cereus ; Coagulase positive staphylococci; Yeast; Mould; Yeast and mould Detection of coagulase positive staphylococci Qualitative Package (2 samples) Detection of Escherichia coli O157 (non-toxigenic strain); Listeria species; Listeria monocytogenes ; Salmonella species; Identification of Listeria species
2 2 2 2
Freeze-dried material
Vial
Photograph and a scenario –
PT-MC-36
Skimmed milk powder
2 x Vial + min 20g sample
4
PT-MC-36HB Herb
2 x Vial + min 20g sample
2
PT-MC-36SP Spice
2 x Vial + min 20g sample
2
PT-MC-37
Skimmed milk powder
2 x Vial + min 200g sample
4
PT-MC-38
Skimmed milk
Vial + min 20g sample
Detection of Clostridium perfringens ; Coagulase positive staphylococci
2
PT-MC-39D Skimmed milk
10g
Bacterial level by Bactoscan; Bacterial level by colony count
2
The full range and availability of test materials and analytes is determined on an annual basis and may be added or removed. For accredited and non-accredited status, plus the most up to date sample data, please see the current application form/scheme description for this scheme.
22 lgcstandards.com/AXIO
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