Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection General › Chapter NR 149 - Laboratory Accreditation › Subchapter I - General Provisions › Section NR 149.03 - Definitions

Current through June 24, 2024
In this chapter:
(1) "Acceptance limits" means limits
				  established by the department that are used to determine if a laboratory has
				  analyzed a proficiency testing sample successfully.
Note:
Acceptance limits are specified in s.
					 NR
					 149.27.
(2) "Accreditation" and "accredited" mean
				  that the department has determined that an organization is competent to perform
				  specific types of tests. "Accreditation" and "accredited" include
				  "certification" and "registration."
(3) "Accreditation matrix" means a matrix
				  type that is part of the first tier of a field of accreditation under s.
				  NR
				  149.13(2). Accreditation matrices are
				  drinking water, aqueous, and non-aqueous matrices.
(4) "Accuracy" means the closeness of a
				  measured value to an accepted reference value or standard.
(5) "Algorithm" means a process or set of
				  rules to be followed in calculations for solving a problem.
(6) "Analysis day" means the day in which a
				  specific type of analysis is performed.
(7) "Analyte" means the chemical substance,
				  physical property, or organism analyzed in a sample.
(8) "Analyte group" means a set of analytes
				  that can be determined using the same method or technology and that constitute
				  a unit, acknowledged by the department, of the third tier of accreditation
				  under s.
				  NR
				  149.13(4).
(9) "Analytical balance" means a balance that
				  is capable of measuring masses to within 0.0001 g.
(10) "Analytical class" means a set of
				  analytes or analyte groups of similar behavior or composition, or a set of
				  analytes or analyte groups regulated under the same provisions of the federal
				  safe drinking water act, that is used to organize the third tier of
				  accreditation under s.
				  NR
				  149.13(4).
(11) "Analytical instrument" means any test
				  instrument used to provide analytical results that is not support
				  equipment.
(12) "Analytical staff"
				  means staff that includes laboratory directors, supervisory personnel, quality
				  assurance personnel, technicians, chemists, biologists, preparation analysts,
				  and instrument analysts.
(13)
				  "Aqueous" means an accreditation matrix that is water, is not drinking water,
				  and can be reported in units of mass per volume.
Note:
Leachates are not accredited under the
					 aqueous matrix.
(14)
				  "Batch" means a set of environmental samples prepared or analyzed together
				  using the same process, personnel, and lots of reagents.
(a) A "preparation batch" means a set of one
				  to 20 environmental samples of the same accreditation matrix, meeting batch
				  criteria, and with a maximum time of 24 hours between the start of processing
				  of the first and last sample in the batch.
(b) An "analytical batch" means a set of
				  environmental samples which are analyzed together as a group in an
				  uninterrupted sequence.