Analytical Method and Laboratory Selection

On every project we face decisions related to the selection of proper analytical methods and a laboratory to perform them. Various regulatory protocols offer hundreds of analytical methods. How do we identify the ones that are appropriate for the project There are dozens of analytical laboratories competing for work. How do 

The groundwork for laboratory selection starts during the planning phase of the data collection process. By having identified the intended use of the data (Step 1), the regulatory framework (Step 2), and action levels and appropriate reporting limits (Step 3) in the course of the DQO process, we narrow down the alternatives for the selection of analytical methods. By evaluating the possible matrix limitations (Step 4), such as matrix interferences and their effects on the RLs, we will further refine the 

We will document the identified analytical methods, numbers and types of samples, and appropriate QC requirements in the SAP, prepare the Laboratory SOW, and send it to at least two laboratories for competitive bidding. To be thorough in the selection process, we should request that the laboratories supply with their price proposal a description of their technical capabilities and sample throughput capacity and the QA Manual that documents the laboratory QA system. This information may not be necessary if a laboratory has been providing analytical services to us in the past, but it will be a prudent practice if new laboratories are among the bidders. 

Most environmental laboratories have a Statement of Qualifications (SOQ) document that establishes the laboratory s qualifications through descriptions of project experience, a list of accreditations, and resumes of laboratory staff. A review of the SOQ together with the Laboratory QA Manual will enable us to establish the technical capabilities and the capacity of each laboratory (Step 6). Applicable accreditations should be verified as part of laboratory qualifications, such as the state and DOD certifications or approvals. 

Only after the qualified laboratories have been identified should we evaluate the proposed prices (Step 7). At this step, we will be able to select the lowest bidder laboratory, which is qualified to meet the technical demands of the project and is capable of meeting the project schedule for sampling and analysis. The schedules, however, are subject to frequent changes, and delays in sampling and sample delivery to the laboratory may force the laboratory to fail on their commitment to the project. In this case, the next lowest bidder backup laboratory, which has been already evaluated in the selection process, may be able to accept the work. 

---

B4 Analytical methods 2.4 Flow to navigate the analytical method maze 2.9 Analytical method and laboratory selection 4.4 Analytical techniques and their applications... 

Figure 2.6 The seven steps of the analytical method and laboratory selection process.

Practical Tips Analytical method and laboratory selection... 

---