CHAPTER 2 Sampling Sampling Plan Roselyn Aperocho Naranjo
- Slides: 8
CHAPTER 2 Sampling & Sampling Plan Roselyn Aperocho- Naranjo USPF, College of Pharmacy www. roselynnaranjo. vze. com
SAMPLING � Laws of probability must be considered RISK � Producer’s § risk rejecting a good batch � Consumer’s § risk accepting a bad batch
SAMPLING PLAN � determines the size and frequency of sample � basis for accepting or rejecting a product � requires 3 numbers § N - number of items from where the sample is drawn § n - a random sample drawn from a lot or batch § C – acceptance number ; specified by AQL (acceptable quality level)
SAMPLING PLAN � determines the size and frequency of sample � basis for accepting or rejecting a product � requires 3 numbers § N - number of items from where the sample is drawn Example § n - a random sample drawn from a Lot or sample Batch N-50 defects lot or batch random § C – acceptance Reject ornumber Accept
SAMPLING PLAN § Square root system formula: Example N-50 = ?
SAMPLING PLAN §§ Military Government Standards Sampling (MILSTD-D Plan 105 D) Adopted by the US Department of Defense Bell Telephone Engineers Laboratories - 1942
SAMPLING PLAN § MASTER TABLE - Sample size, acceptance and rejection numbers 1. AQL 2. SAMPLE CODE LETTER NEED TO KNOW 3. TYPES OF 4. INSPECTION SAMPLING SCHEMES Simple Normal Double Tightened Multiple Reduced
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