Capsule- and disk-filter procedure
Techniques of Water-Resources Investigations
9-A5
Links
- More information: National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9
- Document: Report
- Download citation as: RIS | Dublin Core
Abstract
Capsule and disk filters are disposable, self-contained units composed of a pleated or woven filter medium encased in a polypropylene or other plastic housing that can be connected inline to a sample-delivery system (such as a submersible or peristaltic pump) that generates sufficient pressure (positive or negative) to force water through the filter. Filter media are available in several pore sizes, but 0.45 µm is the pore size used routinely for most studies at this time. Capsule or disk filters (table 5.2.1.A.1) are required routinely for most studies when filtering samples for trace-element analyses and are recommended when filtering samples for major-ion or other inorganic-constituent analyses.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Capsule- and disk-filter procedure |
| Series title | Techniques of Water-Resources Investigations |
| Series number | 9-A5 |
| Sub-chapter | 5.2.1.A |
| DOI | 10.3133/twri9A55.2.1.A |
| Year Published | 2016 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Office of Water Quality |
| Description | 8 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Chapter 5: Processing of water samples |
| Public Comments | This report is Section 5.2.1.A of Chapter 5: Processing of water samples in Book 9: Handbooks for water-resources investigations |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |