Key facts
- Brand
- Agilent
- Model
- 5973N MSD
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-05
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Agilent 5973N MSD Ammonia Reagent Gas Implementation Guide
This document details the implementation of ammonia reagent gas for positive and negative chemical ionization on the Agilent 5973N Mass Spectrometry Detector (MSD). It highlights that ammonia is useful for positive chemical ionization due to its high proton affinity and for electron capture negative ion chemical ionization due to its thermalizing power. The text emphasizes the necessity of using high-purity ammonia (99.998% or greater) to prevent issues like split peaks and short filament lifetimes caused by water and oxygen contaminants.
Read onlineAgilent 5973N MSD specifications
| Ammonia Purity Requirement | 99.998% or greater |
|---|---|
| Water and Oxygen Limit | no more than 5 ppm |
| Ammonia Usage Rate | approximately 1 ml/min |
| Regulator Pressure Setting | less than 20 psi |
| Pump Ballasting Duration | 30 minutes |
| Pump Oil Change Frequency | at least every three months |
Source: Agilent 5973N MSD Ammonia Reagent Gas Implementation Guide
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How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the minimum purity required for ammonia reagent gas?
The ammonia must be of the highest purity available, certainly no less than 99.998% pure.
From: Agilent 5973N MSD Ammonia Reagent Gas Implementation Guide
What are the critical contaminants to avoid in ammonia gas?
Water and oxygen are the most common and critical contaminants, which should be present at no more than 5 ppm.
From: Agilent 5973N MSD Ammonia Reagent Gas Implementation Guide
Which reagent gas is recommended for reducing chemical noise in phthalate analysis?
Ammonia is recommended as the reagent gas to reduce chemical noise and enhance identification.
From: Agilent A New Approach to the Analysis of Phthalate Esters by GC/MS Application Note
What is the primary benefit of using retention-time locking (RTL)?
RTL allows for the creation of compound acquisition methods and quantitation databases that can be reproduced in any laboratory anywhere.
From: Agilent A New Approach to the Analysis of Phthalate Esters by GC/MS Application Note
What is the purpose of this manual?
This book is used to learn how to operate and maintain your 5973N MSD hardware.
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