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Jun 08, 2022 View:

Equipment for testing obscuration

Does anyone have a recommendation for purchasing lab equipment for testing obscuration, particularly a glass condenser. We are on quite the shoestring budget, so going the $1000+ route isn't really an option. If you happen to know of a good way for testing for obscuration other than the distillation method (again, not overly expensive), please throw it out if you have it.


Reply:

Paul,

This may help your shoestring budget. This glass distillation unit may be what you need.

http://unitednuclear.com/index.php?main_page=product_info&cPath=25_26&products_id=518

Lee


Reply:

Lee,

You've been holding-out on me. This is much nicer looking than my camp stove contraption.

Will


Reply:

A basic question, but one I've never run into.

I understand what obscuration it, and how to get the figures, and why.

However, if we are producing clear or aged products which are filtered then there are no relevent solids to measure.

So, under what conditions do we folks need to be concerned with obscuration?


Reply:

When they're making cordials....or anything containing a significant amount of added sugar.


Reply:

When they're making cordials....or anything containing a significant amount of added sugar.


Reply:

A Lab Tech at TTB told me to pour a 100 ml sample in a petri dish and place it in a warm oven over night. When all is evaporated, weigh what is left and subtract.


Reply:

Subtract what from what? Then do what with the number?

That's the evaporation method, and it is:

(1) usable only in a very small range of obscuration,

(2) usable only in a very small range of proof, and

(3) requires a very good (expensive) laboratory balance.

If you have the equipment for a burn-off, it's usable for any measurement. it even works when the obscuration is so small that you don't need to consider it.

Where is this stuff? 27cfr30.32


Reply:

Does anyone have a recommendation for purchasing lab equipment for testing obscuration, particularly a glass condenser. We are on quite the shoestring budget, so going the $1000+ route isn't really an option. If you happen to know of a good way for testing for obscuration other than the distillation method (again, not overly expensive), please throw it out if you have it.