ARCHIVED REPORTS_1988_2 - Laserfiche WebLink

Home Browse Search

0 cap. All samples taken in a given day are then placed in a cushioned box for shipment to the laboratory. The box is then sealed with security tape. The generous use of security tape requires very little time yet provides a certain verification of the integrity of the sample. At CCAS, accountability is a key factor in quality assurance. Personnel are required to initial or sign the field sample record book, the chain of custody document, the analytical request sheet, the sample injection record, the data processing worksheet and the final report which is then reviewed for release by a Ph.D., chemist. In this way personal responsibility for the sample is established so that appropriate individuals can be questioned should the need arise. summarizing the day's sampling activities. The needle valve is then closed and the canister removed from the sampling manifold. A Swagelok cap is then securely fastened over the sample connector. Nelson Analytical's RLAS sample tracking software. Canisters are cleaned between each use with moist zero air. Since the All relevant information is then transferred to the chain of custody samples can be shifted to source testing in order to avoid problems document. Security tape is then placed over the needle valve and the end cap. All samples taken in a given day are then placed in a cushioned box for shipment to the laboratory. The box is then sealed with security tape. The generous use of security tape requires very little time yet provides a certain verification of the integrity of the sample. At CCAS, accountability is a key factor in quality assurance. Personnel are required to initial or sign the field sample record book, the chain of custody document, the analytical request sheet, the sample injection record, the data processing worksheet and the final report which is then reviewed for release by a Ph.D., chemist. In this way personal responsibility for the sample is established so that appropriate individuals can be questioned should the need arise. Field sample numbers are uniquely assigned in the field and recorded both in the field notebook and on the chain of custody record. these become part of the sample description as each sample is assigned a unique log number upon arrival in the laboratory. The assignment of laboratory numbers, completion of the chain of custody document and filling out the analytical requests are the responsibility of our full-time Sample Control Officer, Ms. Shellie Noller. Her job is made easier through the use of Nelson Analytical's RLAS sample tracking software. Canisters are cleaned between each use with moist zero air. Since the cans are numbered, it is a relatively simple matter to maintain a can history record. In this way, canisters which become exposed to high level samples can be shifted to source testing in order to avoid problems associated with sample carryover. Major analytical equipment such as the GC/MS systems and the data processing systems are under preventative maintenance contracts in order to minimize downtime. Six GC/MS systems are available for use in connection with work of this type. Four selective detector gas chromotographs are available. USE OF CERTIFIED STANDARDS Central Coast Analytical Services employs the Scott-Morrrin Certified Series 1 standard as the primary gas standard for Calderon analyses. A Scott-Marrin Calderon Blend is used as a control gas standard. The two standards are used as a check on each other and are run with every batch of samples. Differences in response factors are averaged, if necessary to provide the best overall response factors which. in turn, are used to calculate the results for the day's analytical run. Because the volume of these standards are very large relative to the amount used during daily standard runs, the some standards can be used for the duration of long projects. Typical results are appended to this document.