| Rating Criteria |
Quality System |
Material/Product |
Quality Technology |
Statistical Capability |
90 - 100%
Preferred Supplier |
Exceeds all Quality System Requirements. |
Average acceptance rate of 99.5%. Always meets ESI's specification requirements. |
Continually improving products and processes through advances in quality programs. Utilizes AQP methods. |
Cp=1.83; Cpk=1.33
(Short term)
Cp=2.0; Cpk=1.67
(Long term) |
80 - 90%
Certified Supplier |
Meets all Quality System Requirements. |
Average acceptance rate of 90%. Always meets ESI's specification requirements. |
Continually improving products and processes through advances in quality programs. Utilizes AQP methods. |
Cp=1.83; Cpk=1.33
(Short term)
Cp=2.0; Cpk=1.67
(Long term) |
70 - 80%
Qualified Supplier
(Approved candidate. Continuous Improvement Plan required) |
Quality Systems meets most of ESI's requirements. Improving major products and processes through the latest advances in quality programs. |
Average acceptance rate of 75%. Resolves all quality-related problems promptly. |
Constantly responds to quality problems and relays process and procedure changes which affect quality of commodity. |
Cp=Cpk=1.33
(Short term)
Cp=Cpk=1.67
(Long term) |
Under 70%
Unqualified Supplier
(90 day probation period, short-term Continuous Improvement Plan; required to bring up score to 70% within 90 days. ) |
Has no recognized quality system. Generally not capable of minimum process controls to ensure product conformance. |
Average acceptance rate of fewer than 75% for last year. Seldom meets ESI requirements. |
Shows little or no interest in developing a quality program to improve product or processes. |
CP=Cpk Less than 1.33 |