Cherney Micro currently offers as proficiency testing programs to our customers. For each program, participants may analyze the test items for any or all of the tests specified. Customers may use methods of their choice to analyze the samples and are encouraged to handle and treat Proficiency Testing samples as routine laboratory samples.
Your proficiency testing performance will be evaluated based on a z’ score for each test you perform, rather than standard deviation. This is a more robust method of evaluating proficiency performance. The use of such statistics reduces the likelihood that your result will be deemed an “outlier.”
At all times your company’s confidentiality is protected. Our customers are assigned alpha numeric codes to allow proficiency testing results to be distributed with anonymity.
Testing Scheme |
Sample Matrix |
Tests that can be analyzed |
Dry Whey |
Sweet Whey Powder & Mashed potatoes |
Aerobic Plate Count, Ash%, Enterobacteriaceae Count, Fat %, Moisture %, pH, Protein %, Scorched Particles, Titratable Acidity, Total Coliform Count, Yeast & Mold Count (combined) |
Basic Microbiology |
Mashed potatoes |
Aerobic Plate Count, Enterobacteriaceae Count, Total Coliform Count, Yeast & Mold Count (combined), generic E. coli (optional) Count and S. aureus coagulase positive Count (optional) |
Cheese Analytical – |
Romano & Parmesan Cheese |
Butterfat % (wet basis), Moisture %, pH, Protein %, Salt % |
Cheese Analytical - |
Cheddar & Colby Cheese |
Butterfat % (wet basis), Moisture %, pH, Protein %, Salt % |
Cheese Analytical - |
Mozzarella & Provolone Cheese |
Butterfat % (wet basis), Moisture %, pH, Protein %, Salt % |
1110 S Huron Road
Green Bay, WI, 54311
P: 920-406-8300