#ASTM

#ThreadedRods4BeginnersLegenda:Pitch: coarse thread #UNCfine thread #UNF 8pitch #8UN #AcmeThreadLenght:Overall length1st thread to 1st threadIt can bemetric: 20mm - 2mSAE: 1/2inch - 56inchDiametermetric: m6 - m48 (in mm)/1 #ThreadedRods4Beg

Farzad Mostashari

1/ All masks are not the same, and it's hard to tell which ones work better, but this article provides some insights. First, "paper" surgical masks are really very very

Ziad /-- 2 m --/ Fazel

Thread: Alberta Health's procedural masks.@AHS_media: "These masks are all safe, certified and meet ATSM Level 1 filtration requirements."Longtime supplier PRI•MED follows ASTM F2100-11 (2011).New supplier Vanch follows YY/T 0969-2013.@

Dustin Poppendieck

Last year @AtmosAvery challenged me to be part of #scienceathon. This weeklong event put on by the Earth Science Women’s Network (ESWN) celebrates STEM, the role of science in the

1/ I wear an N95 at locations outside of my home. I wear it to the grocery store, pharmacy and my doctor's office.It's comfortable, doesn't hurt my ears, doesn't fog

You know why our frontline healthcare workers can’t get the supplies they need? Because we are limiting options in the global supply chain to US standards and creating bottlenecks during

One of the basic pieces of furniture, a chair is a type of seat. Its primary features are two pieces of a durable material, attached as back and seat to

Narcissus 🇬🇧🇩🇪🇯🇵🇭🇰🇹🇼👌

NEW Thread for protection & prevention of Covid-19 (Wuhan Pneumonia virus) Checklist No. 1: Surgical Masks wear it no matter u are healthy or sick to avoid infection. change it