DECISION GUIDE FOR WELDINGSTARTIs there a substance specific standard
for the contaminant that requires a 100
level filter (e.g. lead or Beryllium)?

N95 Pre - FilterNO

IS OZONE PRESENT?**YESIS OZONE PRESENT?**

P100 Filter Disk
and OV or MultiGas/Vapor Smart
Cartridge
OR
P100 Plus
Nuisance OV
Filter DiskIS OIL PRESENT?

YESYESAny
P100
FilterR95
Pre - Filter
ORNO

P100 Filter Disk
and OV or MultiGas/Vapor Smart
Cartridge

N95 Filter Disk
and OV or MultiGas/Vapor Smart
Cartridge

NO

ORORAny
N100Filter

P100 Plus
Nuisance OV
Filter DiskAny N95
Plus NuisanceOV MaskIS OIL PRESENT?

ORYESIS OIL PRESENT?

NONO

Any N95 or
N99 Mask

YESYESNO

Any

P100 Filter Disk

Mask

OR
Any R95, P95 orP100 Mask

WELDING SAFETY TIP
Arc welding producesozone vapors. The
affect of UV radiationfrom the arc on the
air surrounding thegas shield generates
ozone.

Always wear appropriate eye and face protection.
* The Moldex Chemical Selection Guide can be found online under theSelecting The Correct Respirator section at www.moldex.com/resources** Moldex respirators may be used for Nuisance levels of ozone only.
Also check the OSHA substance specific regulations for compliance.

Note: R and P filters can be used in environments with or without oils present.
Warning: This guide may be used as an aid to select appropriate respiratory protection for specific contaminants. Because conditions at the worksite can vary substantially, a comprehensive evaluation must be made to determine the correct respiratory protection. Whencontaminants at a worksite have been identified and concentrations measured, this guide may be used to select the appropriate respirator. Only qualified professionals, familiar with the actual working conditions and knowledgeable in the benefits and the limitations ofrespiratory protection equipment, should make the selection. Before making the selection, users must also read and understand the applicable MSDS, specifically the section on respiratory protection, for the welding products they plan to use. Users must also refer to theMoldex Chemical Selection Guide before making the final selection. If the selection criteria changes, including, but not limited to, worksite conditions, consumers, or standards and regulations, a new evaluation must be made to determine the appropriate respiratory
protections. Proper use of Moldex products must be determined by the employer and must be in accordance with all applicable local, state, and federal regulations including OSHA 29CFR1910.134.

Most Popular Moldex Welding Respirators

2300N95 & 2400N95

2310 N99 & 2315 N99

2400N95 has an addedcarbon layer helps filter
out nuisance levels ofozone and OV¹.

A higher level of protection.
Filters out 99% or airborne
particulates free or oil.

¹Nuisance levels are contaminants that do not exceed the OSHA Permissible Exposure Limit (PEL).

4200 N95, 4600 N95, 4800 N95,4300P95, 4700N100 & 4400P100
More Air, More Wear.
Patent pending Wave technology
allows easy breathing for cool
comfort and longer wear.

2700N95 & 2800N95

7000 Economy/7800 Silicone

Cloth HandyStrap for hangable,
cool comfort. 2800N95 has an
added carbon layer helps filter
out nuisance levels ofozone and OV¹.

Easy to Wear.
Lightweight, durable andcomfortable with a wide
field of vision.

Common Welding Fumes and Suggested Moldex Respirator
Contaminant

Beryllium*
Cadmium*Chromium, fume
Chromium, hexavalent*
Iron Oxide, fume

No Oil Present
2300N95, 4200 N95,2700N95, 4600 N95
2730N100, 4700N100
2730N100, 4700N100
2310 (N99), 2315 (N99)2310 (N99), 2315 (N99)2310 (N99), 2315 (N99)

Lead, fume*2730N100, 4700N100

7100+7940, 8100+8940, 7960

Manganese, fume2310 (N99), 2315 (N99)2300N95, 4200 N95,
2700N95, 4600 N95
2310 (N99), 2315 (N99)

Aluminum Oxide

Tin, metal oxides
Zinc Oxide, fume1

No Oil, but Nuisance Level/Ozone

Oils Present

Oil and Nuisance Level/Ozone

2400N95, 2800N95, 8755, 4800 N95

2740R95, 4300 P95

2840R95, 7100+7940

8100+8940, 7100+7940
8100+8940, 7100+7940
2400N95, 2800N95, 8755, 4800 N95
2400N95, 2800N95, 8755, 4800 N95
2400N95, 2800N95, 8755, 4800 N95

7100+7940, 8100+8940
8100+8940
2840R95
2840R95
2840R95

2400N95, 2800N95, 8755, 4800 N95

2360P100, 4400P100
2360P100, 4400P100
2740R95, 4300 P95
2740R95, 4300 P95
2740R95, 4300 P95
2360P100, 4400P100
8940, 7940, 8990, 7990
2740R95, 4300 P95

2400N95, 2800N95, 8755, 4800 N95

2740R95, 4300 P952840R95

2400N95, 2800N95, 8755, 4800 N95

2740R95, 4300 P95

2840R95

7100+7940, 8100+8940, 7960
2840R95

Moldex respirators may be used for Nuisance levels of ozone only.

WARNING: This chart may be used as an aid to select the appropriate respiratory protection for a specific contaminant. This chart is not all inclusive and varies depending on the consumables used. Please refer to the consumable manufacturer’s MSDS, before selecting a respirator.
Only a qualified professional, familiar with the actual working conditions and knowledgeable in the benefits and limitations of respiratory protection equipment, should make the selection. Please refer to latest version of the Moldex Chemical Selection Guide for help in choosing theappropriate respirator. Protection from ozone is for concentrations less than the OSHA PEL. Please refer to the warnings above for more information.
WARNING - DO NOT USE MOLDEX RESPIRATORS IF ANY OF THE FOLLOWING APPLY:• Your welding environment is immediately dangerous to life and health• Your welding environment is a confined space• Your welding environment contains less than 19.5% oxygen
9703-721 REV J 11/18• Your welding environment has contaminant levels greater than 10x PEL• You use chlorinated hydrocarbons when are welding (e.g. degreasers)• There are other unknown contaminants present

MOLDEX TECHNICAL ASSISTANCE:For more information call +1 (800) 421-0668 or +1 (310) 837-6500 ext. 512/550 orE-mail: sales@moldex.com, tech@moldex.com or visit www.moldex.com.