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Methylene Blue pharmaceutical grade powder source

methylene blue

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3 replies to this topic

#1 Spiral Architect

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Posted 29 June 2020 - 01:53 AM


Looking for a source of high-purity powder. 

 

Is anyone familiar with this seller?

https://www.ebay.com...353.m2749.l2649

 

 



#2 Johnatron

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Posted 30 June 2020 - 06:26 AM

eBay has High risk. From My Spectrometer testing, a few reliable lab suppliers of AR and LR grade Showed moderate But manageable levels of copper zinc and barium. Anything other than AR or USP grades would be a risk. The tricky part is getting an account with a lab supplier. I use microscropy grade solution. 



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#3 Spiral Architect

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Posted 01 July 2020 - 02:42 AM

eBay has High risk. From My Spectrometer testing, a few reliable lab suppliers of AR and LR grade Showed moderate But manageable levels of copper zinc and barium. Anything other than AR or USP grades would be a risk. The tricky part is getting an account with a lab supplier. I use microscropy grade solution. 

 

Where did you find that.. ?



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#4 pamojja

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Posted 02 July 2020 - 10:41 AM

Any source of MB most likely not contaminated in the EU?







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