How to detect trace moisture?
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Our product is amino acids; we want to control trace amounts of moisture but are unsure what instruments or methods to use
1. An accurate measurement can be obtained using the Karl Fischer method； 2. The amount of crystal water, as well as the changes during water loss, can be determined using differential thermal analysis ； 3. The moisture adsorbed physically can be determined by drying ； Are these methods sufficient?
You need to look at the standards; what methods are required for your analysis? Generally, Kardia is used more often
Just use Carls reagent and the appropriate instruments to measure trace amounts of moisture
The Kemtrak infrared moisture meter can be used; it operates on the principle of infrared absorption spectroscopy to measure moisture content online, with the signal available as a 4-20mA output
We used the Karl Fischer method for measurement; the precision of existing fully automatic moisture analyzers is quite high. I’m not sure what exactly the author means by ‘trace amounts’
Chromatography can be used too! ! ! ! ! ! ! !
This post was last edited by qugd on 2010-11-22 at 16:22. Is it gas chromatography or liquid chromatography? Could you tell me?
Trace amounts of water can generally be measured using a Karl Fischer titrator! ! ! ! !
There are many suppliers of micro moisture meters in Zibo; the price is 9,500–10,000 yuan per unit, while fully automatic models cost 40,000–50,000 yuan
Reply to 8# qugd: Gas chromatography!!!!!!!!!!!