ISO 7704:1985
Water quality; Evaluation of membrane filters used for microbiological analyses

Standard No.

ISO 7704:1985

Release Date

1985

Published By

International Organization for Standardization (ISO)

Status

Be replaced 2023-01

Replace By

ISO 7704:2023

Latest

ISO 7704:2023

Scope

Gives a procedure for the evaluation and comparison of water-testing filters intended for the enumeration of specific organisms and mixed microbial populations. The procedure provides general guidelines for comparative testing of the recoveries of bacteria, yeasts and other fungi on membrane filters, as compared to recoveries by the spread plate and pour plate techniques.

ISO 7704:1985 history

• 2023 ISO 7704:2023 Water quality — Requirements for the performance testing of membrane filters used for direct enumeration of microorganisms by culture methods
• 1985 ISO 7704:1985 Water quality; Evaluation of membrane filters used for microbiological analyses