RELT - Registered Environmental Laboratory Technologist

RELT - Registered Environmental Laboratory Technologist is a special registration/certification for persons engaged in the laboratory management and/or analysis of environmental samples and is recognized by the Rhode Island Department of Health.

This Test: 

  • Online Examination (link provided by email)
  • Number of questions: 100
  • Format of questions: Multiple Choice 
  • Has a time limit of: 02:00:00
  • Has a pass mark of: 75%
  • Is intended to be closed book.


ChapterChapter Name# of Questions% of Exam
2Introduction to Laboratory 4228.0%
3Solids in Wastewater117.2%
5Dissolved Oxygen (DO) Measurement53.0%
6Biochemical Oxygen Demand (BOD)1510.0%
7Chlorine (cl2) Residual Determination96.0%
8Fecal Coliforms2919.2%
9Total Phosphorus85.2%
11Quality Control64.0%

RELT - Registered Environmental Laboratory Technologist

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Exam: $ 200.00
Exam Retake: $ 100.00
Required Study Guide Materials

No Study Guide - $0.00
E-Book - $ 125.00

Sample Exam Questions

We provide sample questions for this exam.

Sample Questions - $40.00


National Registry of Environmental Professionals®
PO Box 2099
Glenview, IL 60025