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API SPEC 14L: Lock Mandrels and Landing Nipples : Reaffirmed

$

273

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API SPEC 20F: Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries : Reaffirmed

$

169

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API TR 5NCL Nickel Content Limits for API 5CT Sour Service Products

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149

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API SPEC 19ICD: Inflow Control Devices : Reaffirmed

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189

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API MPMS CH 23.2: Reconciliation of Liquid Tank Car(s) Quantities : Reaffirmed

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218

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API SPEC 16A: Specification for Drill-through Equipment

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322

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API RP 13B-2: Field Testing Oil-based Drilling Fluids wA1

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388

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ISO 10260:1992

ISO 10260:1992 Water quality – Measurement of biochemical parameters – Spectrometric determination of the chlorophyll-a concentration

CDN $76.00

SKU: 98bbe26dfbf8 Category:

Description

The procedure specified can be applied for phytoplankton in natural surface waters and for testing algal growth in bio-assays. Using appropriate sampling it can also be applied to phytobenthic communities. The principle is collection of algae by filtration, extraction of algal pigments, spectrometric determination of the chlorophyll-a concentration in the extract, evaluation of the chlorophyll-a and phaeopigment concentration from the difference of absorbance at 665 nm prior to and after acidification of the extract.

Edition

1

Published Date

1992-07-02

Status

PUBLISHED

Pages

6

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

The procedure specified can be applied for phytoplankton in natural surface waters and for testing algal growth in bio-assays. Using appropriate sampling it can also be applied to phytobenthic communities. The principle is collection of algae by filtration, extraction of algal pigments, spectrometric determination of the chlorophyll-a concentration in the extract, evaluation of the chlorophyll-a and phaeopigment concentration from the difference of absorbance at 665 nm prior to and after acidification of the extract.

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