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Good Laboratory Practice Series: Principles of Sample Collection - Sessions 1 + 2


The course emphasizes the importance of collecting samples that represent the source matrix and maintaining the integrity of the sample until delivery to the laboratory. Also implicit in these objectives are understanding the objectives/reasons for collecting the samples, and ensuring that the selected site (or sites) accurately represent the goals of the sampling project.

The goal is to provide practical guidance and performance measures for field operations to consider when collecting samples.

This training series consists of the three sessions listed below. You may purchase webcasts of Sessions 1+2, Sessions 1+3, or all three sessions.

Session 1: General Concepts
Session 2: Water Sampling Sources
Session 3: Sediments

Session 1: General Concepts

  • Importance of Sample Collection
    • Why Samples Are Being Collected
    • Sample Planning and Site Location
    • Quality Topics
    • Pre-deployment
    • Common Sense Principles
    • Contamination Prevention
    • Equipment and Supplies
    • Preservation and Sample Containers
    • Documentation
  • Common Water Sampling Techniques
    • VOCs
    • Bacteria
    • Giardia & Cryptosporidium
    • Phytoplankton
    • Macroinvertebrates
    • Toxicity
    • Radiochemistry

Session 2: Water Sampling Sources

  • Drinking water
  • Surface (ambient) Water and Wastewater
    • Grab Samples
    • Automatic Samplers
  • Groundwater
  • Ultra-Trace metals

Session 3: Sediments

  • Collecting Chemical and Microbiological Samples
  • Collecting Biological Sample (Macroinvertebrates)
  • Soils
    • Collecting Volatile Organic Samples
  • Swab/wipe samples
    • Viruses

Audience: Field and Laboratory Personnel. Engineering firms. Technical managers and quality assurance managers will also benefit from the course material.

Learning Outcome: Completion of the course will provide the attendees with an understanding of the importance of maintaining sample integrity and traceability as the sample is handled in the field and in the laboratory.

Session 1+2: $165 for TNI members and $190 for non-members, $725 group rate (5+ students)
Session 1+3: $165 for TNI members and $190 for non-members, $725 group rate (5+ students)
Session 1+2+3: $225 for TNI members and $250 for non-members; $990 group rate (5+ students)

TNI Members: you must be logged-in to the website to receive the member rate.

About Webcasts: Upon receipt of your payment, you will receive a special link by e-mail to watch the webcast on your computer. The link is time-limited: you will have full access to the webcast and any associated handouts for 6 months after receipt of payment, at which time the link will expire. Webcasts cannot be downloaded; they are intended for viewing on your computer only during the 6-month window. If you have any questions, please contact Ilona Taunton at

No certificates are provided with webcasts. If you wish to receive a Certificate of Completion (CoC) for your records, there will be an additional $15 charge per person for the course (all 3 parts). A passing score of 2/3 must be received on the exam in order to receive CEUs and a CoC. Scores of less than 2/3 will receive a Certificate of Attendance. Contact Ilona Taunton at and provide a copy of your course receipt, date of course completion after you have completed the class and copy of your completed quiz. 

When requesting certificates for a group, a list of names and email addresses for the group participants who are to receive a certificate must be sent to Ilona Taunton ( when registering for the class(es).

0.4 CEUs per session

IMPORTANT: By clicking the "Add To Cart" button, below, you are purchasing Sessions 1 and 2 of this webcast series. To purchase Sessions 1 and 3 instead, click here. To purchase all three sessions, click here.


Group rates are available: Each purchased webcast is to be viewed by only one student. If you would like multiple viewers, separate purchases must be made. A group rate of $725 is available for groups of 5 or more students at a single location. Click hereto purchase this webcast at the group rate.


4 hours each

This course has been reviewed and approved by TNI.

Presented By:

Silky Labie

About the Presenter:
The principals of ELCAT, LLC collectively have over 70 years of experience in laboratory and field quality management. ELCAT, LLC provides extensive training of laboratory and field personnel in sampling techniques, quality management and training that addresses the requirements of the National Environmental Laboratory Accreditation Program (NELAP). It performs readiness audits for laboratories who desire to improve their quality system for the purposes of NELAP accreditation. ELCAT presents training and presentations on quality-related topics such as method performance, data integrity, corrective and preventive actions, root-cause analysis, data usability, and the role of quality managers. The company is used exclusively by the University of Florida Center for Training, Research & Education for Environmental Occupations (TREEO) for all off-site training of field personnel. It is regularly asked to provide presentations at the Florida Society of Environmental Analysts (FSEA) meetings. ELCAT, LLC has also provided training and presentations for New York City, the State of Virginia, and The NELAC Institute (TNI).