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I have located the Lot Number on my package:
Can’t find the lot number? You can locate it on the packaging or on the product itself.
The Process.

We don’t just make a respirator or face mask and toss it in a box. There’s a LOT more to it.


Samples from each lot are removed to be conditioned in a chamber for 24 hours.


Next, the sample respirators get ready for the filter test, which verifies that our respirators are meeting NIOSH N95 Criteria.


We test our respirator headbands at 0.8 to 1.5 lbs. of force. This ensures that your straps provide a tight seal while not compromising on comfort.


Ever snap one of the straps? We test ripping force to ensure your headbands have a strong weld to the respirator.

No performance anxiety here. Just quality you can trust.
Let’s locate that lot number and get to work.

Certificate of Analysis

ivWatch hereby certifies the following data to be true specification of the obtained results.
Product Name


Lot Number
Date of Manufacture
Product Name

blox Surgical N95 Respirator

TC Number

Lot Number
Date of Manufacture
Your mask provides 0.0% filtration efficiency of 0.1-micron aerosolized saline particles.

blox Average Lot Filtration Efficiency

Industry Standard

Particulate Filtration Efficiency

**blox performs better than the industry standard of 95%.
Notice how we said better?

Lot Number:

Discover How Your Lot of masks Performed

0 filtration efficiency
0 filtration efficiency

Workplace Performance Plus Standard

0 filtration efficiency
0 filtration efficiency
Proven facts to feel good about.
Released By
ivWatch Quality Assurance
Date Released
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