ASTM D6908-03 - 10.4.2003
 
1. Scope

1.1 This standard covers the determination of the integrity of water filtration membrane elements and systems using air based tests (pressure decay and vacuum hold), soluble dye, and TOC monitoring tests for the purpose of rejecting particles and microbes. The tests are applicable to systems with membranes that have a nominal pore size less than about 1 m. The TOC and Dye tests are generally applicable to NF and RO class membranes only.

1.2 This standard does not purport to cover all available methods of integrity testing.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

D5997-15(2024)

Standard Test Method for On-Line Monitoring of Total Carbon, Inorganic Carbon in Water by Ultraviolet, Persulfate Oxidation, and Membrane Conductivity Detection

D6161-19

Standard Terminology Used for Microfiltration, Ultrafiltration, Nanofiltration, and Reverse Osmosis Membrane Processes

D6698-25

Standard Test Method for On-Line Measurement of Turbidity Below 5 NTU in Water

E20-85

Practice for Particle Size Analysis of Particulate Substances in the Range of 0.2 to 75 UM by Optical Microscopy (Withdrawn 1994)

D1129-24

Standard Terminology Relating to Water

E128-99(2019)

Standard Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use

F658-00a

Standard Practice for Calibration of a Liquid-Borne Particle Counter Using an Optical System Based Upon Light Extinction

D2777-21

Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water

D3370-25

Standard Practices for Sampling Water from Flowing Process Streams

D3864-12(2021)

Standard Guide for On-Line Monitoring Systems for Water Analysis

D3923-23

Standard Practices for Detecting Leaks in Reverse Osmosis and Nanofiltration Devices

D4839-03(2024)

Standard Test Method for Total Carbon and Organic Carbon in Water by Ultraviolet, or Persulfate Oxidation, or Both, and Infrared Detection

D5173-15(2023)

Standard Guide for On-Line Monitoring of Total Organic Carbon in Water by Oxidation and Detection of Resulting Carbon Dioxide

D5904-02(2024)

Standard Test Method for Total Carbon, Inorganic Carbon, and Organic Carbon in Water by Ultraviolet, Persulfate Oxidation, and Membrane Conductivity Detection