Cart 0 Product Products (empty)
No products
To be determined Shipping
$0.00 Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart. There is 1 item in your cart.
Total products
Total shipping To be determined
Total
New Reduced price! 
View larger
View larger 
NSF 49-04a Addendum 2.0
M00000343
New product
NSF 49-04a Addendum 2.0 NSF 49 Class II (Laminar Flow) Biosafety Cabinetry
Amendment by NSF International, 03/01/2005
In stock
More info
Full Description
This edition of the Standard, Addendum 2.0 to NSF/ANSI 49-04a, expands the definition of high efficiencyfilters (3.13) to include specifications for both high efficiency particulate air (HEPA) filters and ultra-lowpenetrating air (ULPA) filters and revisions to rounding errors that affect the pass/fail criteria throughout the document. It also clarifies significant digits in metric and English system conversions.Revisions from Addendum 1.0 have been added to this document for the convenience of our customers.