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API STD 521: Guide for Pressure-relieving and Depressuring Systems – Edition 6

$

682

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API STD 653: Tank Inspection, Repair, Alteration, and Reconstruction – Edition 4

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507

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CSA Z662:19 – Oil and gas pipeline systems

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1197

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CSA Z341 Series-18: Storage of hydrocarbons in underground formations

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878

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CSA Z246.2-14 – Emergency preparedness and response for petroleum and natural gas industry systems

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596

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CSA Z341 Series:22 – Storage of hydrocarbons in underground formations

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878

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CSA Z731-09 (R2014) – Emergency Preparedness and Response

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177

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CSA Z662:23 – Oil and gas pipeline systems

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1197

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CSA Z341 Series:26 – Storage of Hydrocarbons in underground formations

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878

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CSA B51:24 Boiler, Pressure Vessel, and Pressure Piping Code

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ISO 9648:1988

ISO 9648:1988 Sorghum – Determination of tannin content

CDN $82.00

SKU: 2b746f1f97b3 Category:

Description

The method consists in extraction by shaking with dimethylformamide, then after centrifuging, addition of ferric ammonium citrate and ammonia to an aliqiot part of the supernatant liquid and spectrometric determination, at 525 nm, of the absorbance of the solution thus obtained, and determing of the tannic content using a calibration curve prepared using tannic acid.

Edition

1

Published Date

1988-12-29

Status

PUBLISHED

Pages

3

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

The method consists in extraction by shaking with dimethylformamide, then after centrifuging, addition of ferric ammonium citrate and ammonia to an aliqiot part of the supernatant liquid and spectrometric determination, at 525 nm, of the absorbance of the solution thus obtained, and determing of the tannic content using a calibration curve prepared using tannic acid.

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