Polish industrial filters

FP-2131-IV-W[]

Industrial combined filters produced by Wytwórnia Sprzętu Komunikacyjnego. Produced probably between 70's up to 80's when they were replaced by FP 203/1-IV/W. The canister made out of metal sheet was painted grey with a red label near the middle.

Protection[]

The filter protects from 55 substances in a form of gas, vapor or aerosol. It cannot be used when more than one mentioned substance is present in the atmosphere or the concentration of the substance exceeds the limit set by the producer. Like any other filter the oxygen level must be at least 17% by volume.

Trivia[]

Early versions were called FW-2131-IV-W, "FW" stood for "Filtropochłaniacz Wielogazowy" (multi-gas filter) but was later changed to FP-2131-IV-W, probably because of a new naming standard.

According to the PN-78/Z-02006 standard the second digit in a designation specifies the particulate layer finish, and in a case of "1" it's "waterproof finish".

External resources[]

https://gasmaskarchiwum.page/katalog/php/fp2131.php

FP 203/1-IV/W[]

Industrial combined filters produced by Wytwórnia Sprzętu Komunikacyjnego and later by PSO MASKPOL. They were started being produced probably in late 80's, replacing the older FP-2131-IV-W. Early ones produced by WSK were painted red, later ones manufactured by MASKPOL had a slightly different color and were made out of thinner sheet metal.

Protection[]

The filter protects from 63 substances in a form of gas, vapor or aerosol. It cannot be used when more than one mentioned substance is present in the atmosphere or the concentration of the substance exceeds the limit set by the producer. Like any other filter the oxygen level must be at least 17% by volume.

Notable substances against which the P-22/1-W was tested:

Formaldehyde,
Ammonia,
Chlorine,
Bromine,
Carbon disulfide,
Nitric acid,
Phosgene,
Hydrogen sulfide

Safety[]

Because of the filter existing as at least two different versions manufactured in different years it's safety is questionable.

External resources[]

https://gasmaskarchiwum.page/katalog/php/fp203.php

P-22/1-W filter[]

Industrial non-combined (no particulate protection) filters produced by Wytwórnia Sprzętu Komunikacyjnego and later by PSO MASKPOL. There were at least five variants of this filter, in chronological order: grey (70's), red (80's), raspberry and cherry red (90's), silver (90's and early 00's). These filters were based on Polish E-014 but were shorter. Interestingly on older versions the "E-014" symbol was still embossed on the canister.

Threads[]

Because of a large time span of their usage and production the changes of the thread have occured. Old P-22/1-W's are Rd40x4 (GOST) threaded, while those from late 90's and early 00's are Rd40x1/7" (STANAG) threaded.

Protection[]

The filter protects from 66 gaseous substances. It cannot be used when more than one mentioned substance is present in the atmosphere or the concentration of the substance exceeds the limit set by the producer. Like any other filter the oxygen level must be at least 17% by volume.

Notable substances against which the P-22/1-W was tested:

Formaldehyde,
Ammonia,
Chlorine,
Bromine,
Carbon disulfide,
Nitric acid,
Phosgene,
Hydrogen sulfide
Mix of acrylonitrile and methyl acrylate

After the first use the filter can be used only for protection against the initial substance. User needs to keep track of use time, substance and it's concentration.

External resources[]

https://gasmaskarchiwum.page/katalog/php/p221w.php

"M" and "D" filters[]

Industrial non-combined (no particulate protection) filters produced by FASER and WSK "DELTA" in Poland between around 1960-1980.

Large filters were marked with a "D" symbol (D - duży, large) and were based on Polish E-014 canister but lacked a particulate protection layer - entirety of the volume was occupied by compressed activated carbon impregnated with helper substances. It's protection time ranged from 40 minutes for ammonia filters up to 8 hours for mercury vapor filters. Because of their size and weight those were carried in a bag and were connected to the mask with a corrugated hose. The filters were sealed with a plastic cap on top and a rubber plug on the bottom.

Small filters were marked with a "M" symbol (M - mały, small) and their design has not been seen in Poland before. Similarly to their large counterpart they lacked a particulate layer. The main difference was mounting system - those were mounted directly to the mask - and their protection time which ranged from 12 minutes up to 240 minutes. Small filters were sealed with a plastic "pop-it" cover and a wax paper on the bottom. Because of their short protection time those were designed to be one-time use only.

Filter classification
Type	Canister color	Protects against	Filtering substance
M-11, D-11	Brown	Organic vapors: acetone, acrolein, ethanol, methanol, benzene, chloroform, carbon tetrachloride, carbon disulfide, diethyl ether, toluene, xylene etc.	Activated Carbon
M-12	Grey	Acidic vapors and gases: chlorine, hydrogen chloride, formaldehyde, carboxylic acid vapors, acetic acid vapors	Activated carbon saturated with potassium carbonate and sodium carbonate
D-12	Grey	Same as M-12 but without the formaldehyde	ditto
M-13, D-13	Green	Ammonia	Activated carbon saturated with zinc sulfate
M-15, D-15	Yellow	Sulfur dioxide	"acidic gases sorbent"
M-16	Blue / cyan	Hydrogen cyanide, nitrogen oxides	Aktipol-7
D-16	Blue / Cyan	Hydrogen cyanide, nitrogen oxides, methanol, acrylonitrile, methyl acrylate, diisopropyl ether, sulfur dioxides	ditto
M-17	Grey \| Red*	Hydrogen arsenide, phosphine	ditto
M-19	Green \| Orange*	Ammonia, hydrogen sulfide	Aktipol-7 and acidic gases sorbent
M-22	Violet	Mercury vapor	Activated carbon saturated with iodine in potassium iodide
M-24	Yellow \| Orange*	Hydrogen sulfide, sulfur dioxide	Hopcalite
M-25	Yellow \| Orange \| Green*	Hydrogen sulfide, sulfur dioxide, carbon disulfide	Hopcalite and activated carbon