Approximately how many tests can you do with this product?

Every tube for 3-5 tests. There are 6 tubes in the package.thanks

What's the difference between this product, 12K, and their other product designated 11K?

The saccharine and bitrix solutions both have a “fit test solution” and a “sensitivity solution”. I think 12k is for the fit test solution to be used during the actually fitting, and the 11k is the sensitivity solution used to determine a threshold before fitting.

What is difference between test vs sensitivity? And do I need a machine to spray it?

Not sure what difference is, but they are designed for two parts of the test - sensitivity, w/o a respirator, and full test w/respirator. You will need the atomizer to use these vials

Manufacturer	Allegro Industries
Part number	2041‐12K
Item Weight	59 g
Product Dimensions	12.7 x 12.7 x 12.7 cm; 59 g
Item model number	2041‐12K
Size	One size
Material	Bitrex Test Solution
Power source type	Battery Powered
Item Package Quantity	1
Included components	6 Bitter Test Solution ampules
Batteries included?	No
Batteries Required?	No

ALLEGROIndustries 2041‐12K Bitter Test Solution, One Size (Pack of 6)

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