Classick

Anyone experience Glass "Bloom"

8 posts in this topic

Hey All,

Just wondering if anyone has experienced a milky haze (tested via lab as calcium carbonate) suspended in their product after bottling, described in the link below, and if so, what you did about it.

A client we produce for (but do not dilute or bottle) recently experienced this and we're trying to offer them solutions.

In my 16 years of distilling, we have never once come across this. Any thoughts?

http://www.qorpak.com/pages/glass-weatherization

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I'd be willing to wager on their proofing water was not purified, or there was a problem in their process.

My tap water is extremely hard (over 600ppm), and if I don't use RO it gets milky and will almost appear to "etch" the glass so that it looks frosted.  Are they a new company?

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New to spirits bottling, but have a long record of bottling other products.

I believe they've had their water tested, and it passed muster. Im reasonably satisfied that the information contained in the link above is the culprit, I was just curious if any other small batch distillers had experienced anything similar.

Seems like the main factor would be storage of glass bulk glass either at the manufacturer, or in transit... not sure if glass order size (custom vs stock glass, etc) would be a significant variable.

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2 hours ago, Classick said:

Seems like the main factor would be storage of glass bulk glass either at the manufacturer, or in transit... not sure if glass order size (custom vs stock glass, etc) would be a significant variable.

That reminds me...This summer I did have an issue of a few pallets of hazy bottles that I bought from a company that had over estimated their sales and the pallets had been in cold storage for a year or so.  The top few layers of the bottles on the pallets had some sort of hazy residue on/in them.  The supplier I purchased from came out and took some samples, sent them to a lab and it came back with something like atmospheric residue, likely due to the cold/warm with dust and humidity up here in the North.  I refused the hazed bottles so I don't know much beyond that.

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the main problem thats being faced is its impossible to tell if the bottles are afflicted ( its a frosted bottle... of course) until the product has already been bottled.

per that link above, the glass can be treated with fluorine gas or something, but im not sure if the manufacturer can offer that option.

i was just curious how common this was... I had never even heard about it until this happened, and had never seen it mentioned here. Perhaps there are others that have experienced it.

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We purchased bulk stock that had bloom on them because they were offered at a reduced price. Rinsed with spirit prior to bottling and never had a haze precipitate out. I've been told using distilled water will remove bloom as well. 

 

In any case, seems to require a little more cleaning, but otherwise harmless if you can get it out. 

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i should also clarify,  we werent "worried' about  it. . .  just curious as to how often others might be experiencing it

 

thanks for the replies.  ill have to inquire about the sparging details. 

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That's what I was going to ask...pre-rinse or sparge can do this. 

When in doubt, sparge with filtered product in the loop. 

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