Valid study for CO samples both Analyzer and Drager Tube results?

D

David5657

#1
I am trying to set up a valid study of Carbon Monoxide readings in Liquid Product. Presently, at our more modern plants, we sample the Batches continuously by analyzer and I have available a data sample for each batch (automatically logged). The Lots are sampled Prior to loading and at load finish. Sometimes by analyzer (if available) and at other facilities by Drager tube. My problem has been that when I try for a high confidence level the sample size ends up above 40,000. (far too many for us to manually log) Possibly I am attempting for too high of a level. We would like to end up reducing our sampling, after we prove that the system is under control; to once each batch and set up a random sample plan to ensure the lots remain under control. Thank-you in advance
 
Elsmar Forum Sponsor
D

Don Winton

#2
What confidence level are you trying to achieve?

This site <A HREF="http://www.variation.com/library.html" TARGET="_blank">http://www.variation.com/library.html</A> has some good stuff on sampling.

This site <A HREF="http://www.variation.com/techlib/standard.html" TARGET="_blank">http://www.variation.com/techlib/standard.html</A> has some standards for download that may be of use.

Regards,

Don

------------------
I was better but I got over it.
 
Thread starter Similar threads Forum Replies Date
C Neglect or legitimate deferral? Is excessive workload or lack of resources in a department or a team a valid root cause for a non-conformance? Problem Solving, Root Cause Fault and Failure Analysis 12
M Products Manufactured while CE was valid CE Marking (Conformité Européene) / CB Scheme 1
L Valid reasons to omit an "ear-tag" type label on a cable? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
J Are Capability Requirement(s) Valid for All Characteristics? Capability, Accuracy and Stability - Processes, Machines, etc. 6
M Are ASTM F745 & ASTM F75 still valid? EU Medical Device Regulations 5
Q Is KPI in Process Valid if not supported by Procedures? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 5
K MDD or other EU guidance that describes the need for Valid Production Processes EU Medical Device Regulations 2
T Predicate device recalled - Still a valid predicate device? Other US Medical Device Regulations 7
M Is calibration from long ago still valid on never used pipettes? General Measurement Device and Calibration Topics 8
M FDA 21 CFR 820.250 - Does "valid statistical" always mean math? 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 6
F Sample Size to get Statistically Valid Data Measurement Uncertainty (MU) 6
C Is this GR&R method valid? (Printing Company) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
A CE Certificate is valid until 3.12.2013 - Can I still sell the products in Europe? EU Medical Device Regulations 10
S Statistically valid number of biopsy devices should be tested US Food and Drug Administration (FDA) 4
somashekar Authorization to use shelf life sensitive materials beyond its valid shelf life... Manufacturing and Related Processes 7
V Sample Range for a valid GRR using ANOVA in Minitab Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
Q Is it Valid to refer group of documents instead of names? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 9
G Gage R&R Calculation Spreadsheets - Which one here is valid? Quality Tools, Improvement and Analysis 4
P Sterile Packaging Validation - FDA Requirements for Statistically Valid Tests 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 9
K Who issued this certificate and what products it is valid for? ISO 13485:2016 - Medical Device Quality Management Systems 5
K Statistically Valid Audit Sample for Management System Audits? Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
H ISO 9001:2000 Certificate - Original approval date 18 July 1995 and valid until 2012 ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 27
W How long is a Medical Device product registration in Iran valid for? Other Medical Device Regulations World-Wide 1
R Is Cpk valid for a sample size of "1"? Capability, Accuracy and Stability - Processes, Machines, etc. 5
S ISO/TS 16949 certification no longer valid when automotive part production ends? IATF 16949 - Automotive Quality Systems Standard 7
P Valid NB Technical Review Nonconformance? New Class IIb Product EU Medical Device Regulations 4
B Is ISO 14971:2007 still a valid standard? ISO 14971 - Medical Device Risk Management 9
S Without Surveillance Audit, Is ISO certification still valid? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 8
R Is Cpk calculation of dBA (noise level) valid? Capability, Accuracy and Stability - Processes, Machines, etc. 9
Q How long is ISO 9001:2000 good for (valid) ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 2
Q Is my Cpk calculator answer valid? Capability, Accuracy and Stability - Processes, Machines, etc. 4
6 Why the general Valid period of QMS certificate is 3 years? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 8
M Do we need to cite applicable clause of ISO9001 std for a valid customer complaint Customer Complaints 8
S Statistically valid method for multiple raw material sampling Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
H How to Select a Statistically Valid Sampling Plan Inspection, Prints (Drawings), Testing, Sampling and Related Topics 10
R Valid Date to Close Internal Audit Non-conformance Internal Auditing 1
P MIL-STD 1235C - Is it still Valid or has it been Superseded by another Standard? Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
D SICMMSE - Is This Accreditation for ISO 17025 Valid? ISO 17025 related Discussions 5
K Valid Food Safety Objectives Food Safety - ISO 22000, HACCP (21 CFR 120) 11
R Rubber Initial & Inspection Stamps - Valid or a violation of FDA quality guidelines? Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
B OEM Signed PSW - How long is it valid? What are Ford requirements? APQP and PPAP 7
S Medical Device Industry Corrective Action Techniques - Is 8D valid method? Nonconformance and Corrective Action 4
Sean Kelley Is ppm calculation valid or invalid for bulk materials? IATF 16949 - Automotive Quality Systems Standard 4
T Is Poka-Yoke Old Hat? Is Poka-Yoke still a valid concept? Nonconformance and Corrective Action 28
S Valid Control Method - Machine specific LOTO (LockOut TagOut) procedures Document Control Systems, Procedures, Forms and Templates 10
A Is reduction of scrap a valid Continual Improvement Project? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 7
A How Long Will QS-9000 be 'Valid'? QS-9000 - American Automotive Manufacturers Standard 11
K Document Control - 'Valid Only on Print Date' in Footer (Opinions Requested) Document Control Systems, Procedures, Forms and Templates 2
J Statistically Valid Sample Sizes For SPC Statistical Analysis Tools, Techniques and SPC 1
Marc Six Sigma - Statistical Tools - Valid or Hype? Value? Can a CQE do the same? Six Sigma 204
Similar threads


















































Top Bottom