The Chemical Compatibility Guide is to be used to help select the most satisfactory combination of materials, however it is only a guide. Service conditions may vary and can affect accuracy of compatibility. Consult the chemical manufacturer for best compatibility.

Avoid Serious Injury: Always use caution, shields, and/or personal protection when working with or handling chemicals or product containing chemicals.

Chemical Compatibility Ratings
A = Excellent
B = Good
N/R = Not Recommended
NO DATA = Limited/Conflicting Data

Notes:
(1) Max rated temp is 140 °F due to temperature rating of the diaphragm.
(2) PVC liquid ends have a max rated temperature of 104 °F.

(3) Compatibility ratings are given at ambient (70 °F) temperatures.

(4) The diaphragm for the IX-B is a solid PTFE/PFA diaphragm.

(5) For LKN sizes 45-57, valve seats are the same material as the pump head.

(6) Valve balls are SS304 for LKN sizes 45-57.

(7) For the LKN the PVC liquid ends are black.

Material Abbreviations:
PVC
– Clear Polyvinyl Chloride (7)
GFRPP
– Glass Fiber Reinforced Polypropylene
PVDF – Polyvinylidene Fluoride (similar to Kynar)
304SS – 304 Stainless Steel
316SS – 316 Stainless Steel
CE – Alumina (Al₂O₃) Ceramic
PTFE – Polytetrafluoroethylene (similar to Teflon)
HC – Hastelloy C-276
FKM – Fluoroelastomer (similar to Viton type A)
EPDM – Ethylene Propylene Diene Monomer Rubber
AFLAS – Tetrafluoroethylene Propylene (known as AFLAS)
PCTFE – Polychlorotrifluoroethylene (similar to KEL-F)

For Chemical Compatibility chart feedback, suggestions or corrections:
Email Walchem
Chemical Synonyms Concentration (%) E-Series IX LKN Special Considerations PVC (2) GFRPP PVDF 316SS CE HC PTFE FKM EPDM AFLAS PCTFE PTFE/EPDM Laminate
Acetic Acid   10 PE TE VH   N/R 
Acetic Acid   20 PE TE VH   N/R 
Acetic Acid   50 PE TE VH   N/R  N/R 
Acetic Acid   80 PE TE S6   N/R  N/R  N/R 
Acetic Acid Glacial Acetic Acid 100 PE TE S6   N/R  N/R  N/R 
Acetic Anhydride   Pure SH S6 S6   N/R  N/R  N/R  N/R  N/R 
Acetone     PE S6 S6   N/R  N/R  N/R  N/R 
Aluminum Chloride   Sat. PC, PE TC, TE VC   N/R 
Aluminum Sulfate Alum   PC, PE TC, TE VC  
Aminotris(Methylenephosphonic Acid)  ATMP   PC, PE TC, TE VC   NO DATA
Ammonia, Anhydrous Liquid Ammonia 100 PE TE VH   N/R 
Ammonia, Aqueous Aqua Ammonia, Ammonium Hydroxide 10 PE TE VH   N/R 
Ammonia, Aqueous Aqua Ammonia, Ammonium Hydroxide 40 PE TE VH   N/R 
Ammonium Metaphosphate     PC, PE TC, TE VC   NO DATA NO DATA NO DATA
Ammonium Phosphate, Monobasic Monoammonium Phosphate   PC, PE TC, TE VC   N/R 
Ammonium Phosphate, Dibasic Diammonium Phosphate   PC, PE TC, TE VC  
Ammonium Phosphate, Tribasic Triammonium Phosphate   PC, PE TC, TE VC   NO DATA
Ammonium Sulfate   Sat. PE TE VC  
Bromine, Aqueous Bromine Water Sat. TC-12 TC TC outgases N/R  N/R  NO DATA N/R  N/R 
Butyl Amine n-Butylamine, 1-aminobutane Sat. SH S6 S6   N/R  NO DATA N/R  N/R  N/R 
Butyl Amine sec-Butylamine, 2-aminobutane Sat. PE TE (limited data)   N/R  NO DATA NO DATA NO DATA N/R  N/R 
Butyl Amine Isobutylamine Sat. PE TE (limited data)   N/R  NO DATA NO DATA NO DATA NO DATA N/R  N/R 
Butyl Amine tert-Butylamine Sat. PE TE (limited data)   N/R  NO DATA NO DATA NO DATA N/R  N/R 
Calcium Carbonate Calcite, Chalk, Lime   PC, PE TC, TE VC   NO DATA
Calcium Chloride   Sat. PC, PE TC, TE VC   N/R 
Calcium Hydroxide Slaked Lime 50 PC, PE TC, TE VC  
Calcium Hypochlorite Bleaching Powder   PC, PE TC, TE VC   N/R 
Calcium Oxide Unslaked Lime, Quicklime   PC, PE TC, TE VC   NO DATA
Chloramine Monochloramine   PC, PE S6 VC   N/R  NO DATA NO DATA NO DATA NO DATA
Chlorine Dioxide   <0.2 VC TC VC   N/R  N/R  N/R  NO DATA
Chlorine Dioxide   0.2-1 TC, VC TC VC Permeates PTFE N/R  N/R  N/R  NO DATA N/R 
Chromic Acid   10 VC TC VC  
Chromic Acid   20 VC TC VC  
Chromic Acid   40 TC TC TC   N/R  N/R 
Chromic Acid   50 TC TC TC   N/R  N/R  N/R  N/R 
Citric Acid     PC, PE TC, TE VC  
Copper Sulfate   Sat. PC, PE TC, TE VC  
Cyclohexylamine Aminocyclohexane   SH S6 S6   N/R  N/R  NO DATA N/R  N/R  NO DATA NO DATA
Dibutyl Amine   Pure FC, SH S6 S6   N/R  N/R  NO DATA N/R  N/R  N/R 
diethanolamine DEA   PE S6 S6   N/R  N/R  NO DATA N/R  NO DATA NO DATA
Diethylamine   Pure PE, SH TE S6   N/R  N/R  N/R 
Diethylene Triamine     PE, SH TE S6   NO DATA NO DATA N/R  NO DATA NO DATA
Diethylhydroxylamine DEHA   PA, SH S6 S6   N/R  N/R  N/R  N/R  NO DATA
Dimethylamine DMA   PE, PA, SH S6 S6   N/R  N/R  N/R  NO DATA
Ethanol Ethyl Alcohol   PE TE VH, TC  
Ethanolamine Monoethanolamine, 2-aminoethanol Pure SH S6 S6   N/R  N/R  N/R  N/R  N/R 
Ethylene Diamine Diaminoethane Pure PE TE S6   N/R  NO DATA N/R  N/R  N/R 
Ethylenediaminetetraacetic acid EDTA   PE TE TC   NO DATA NO DATA NO DATA NO DATA NO DATA
Ethylene Glycol Dihydroxyethane Pure PC, PE TC, TE VC  
Etidronic Acid HEDP   PC, PE TC, TE VC   NO DATA
Ferric Chloride Iron[III] Chloride   PC, PE TC, TE VC   N/R 
Ferric Sulfate Iron [III] Sulfate   PC, PE TC, TE VC  
Ferrous Chloride Iron[II] Chloride   PC, PE TC, TE VC   N/R 
Ferrous Sulfate Iron [II] Sulfate   PC, PE TC, TE VC  
Fluoroboric Acid Fluoboric Acid   VF (contact factory) VH   N/R  N/R  N/R  NO DATA
Formaldehyde Formalin 35 PC TC VC, TC  
Gluteraldehyde   <3 PA S6 S6   NO DATA N/R  N/R  NO DATA
Gluteraldehyde     PA S6 S6   N/R  N/R  NO DATA
Glycerol Glycerin   PC, PE TC, TE VC  
Hydrochloric Acid Muriatic Acid 15 PC, PE TC, TE VC   N/R 
Hydrochloric Acid Muriatic Acid 25 PC, PE TC, TE VC   N/R 
Hydrochloric Acid Muriatic Acid 35 TC TC TC   N/R 
Hydrochloric Acid Muriatic Acid 38 TC TC TC   N/R  N/R 
Hydrofluoric Acid   Dilute VF (TC) VH Must use non-ceramic balls, contact factory N/R  N/R  N/R 
Hydrofluoric Acid   30 (TC) (TC) (TC) Must use non-ceramic balls, contact factory N/R  N/R  N/R  N/R 
Hydrofluoric Acid   40 (TC) (TC) (TC) Must use non-ceramic balls, contact factory N/R  N/R  N/R  N/R 
Hydrofluoric Acid   50 (TC) (TC) (TC) Must use non-ceramic balls, contact factory N/R  N/R  N/R  N/R 
Hydrofluorosilicic Acid Fluorosilicic Acid, Fluosilic Acid, Hexafluorosilicic Acid 20 VF (TC) VH Must use non-ceramic balls, contact factory N/R  N/R 
Hydrofluorosilicic Acid Fluorosilicic Acid, Fluosilic Acid, Hexafluorosilicic Acid 50 VF (TC) VH Must use non-ceramic balls, contact factory N/R  N/R  N/R 
Hydrogen Peroxide   5 PC, PE TC, TE VC  
Hydrogen Peroxide   20 VCA-H TC VC outgases, incompatible with Ti
Hydrogen Peroxide   30 VCA-H TC VC outgases, incompatible with Ti
Hydrogen Peroxide   50 VCA-H TC VC outgases, incompatible with Ti
Hydrogen Peroxide   90 VCA-H TC VC outgases, incompatible with Ti N/R 
Isopropanol Isopropyl Alcohol, IPA Pure PC, PE TC, TE VC  
Isothiazolones     PA, PC TC TC   NO DATA
Methanol Methyl Alcohol   PE TE VH   N/R 
Methyl Amine Aminomethane   SH S6 S6   N/R  N/R  N/R  NO DATA N/R 
Morpholine     PC, FC TC TC   NO DATA N/R  NO DATA
Nickel Sulfate     PC, PE TC, TE VC  
Nitric Acid   10 PC TC VC  
Nitric Acid   30 PC TC VC   N/R 
Nitric Acid   50 TC TC TC   N/R 
Nitric Acid   70 TC, FC TC TC   N/R  N/R  N/R 
Nitric Acid   98 FC, SH S6 S6   N/R  N/R  N/R  N/R  N/R 
Peracetic Acid Peroxyacetic acid, PAA   TC-12 TE TC outgases N/R  N/R  NO DATA NO DATA NO DATA
Peracetic Acid Peroxyacetic acid, PAA >10 (contact factory) TE S6 outgases, incompatible with Ti N/R  N/R  N/R  NO DATA NO DATA
Phosphonobutanetricarboxylic Acid PBTC   PC, PE TC, TE VC   NO DATA
Phosphoric Acid   10 PC, PE TC, TE VC  
Phosphoric Acid   50 PC TC VC  
Phosphoric Acid   80 PC TC VC  
Polyacrylic acid PAA   TC TC TC   N/R  N/R  NO DATA
Polymaleic acid PMA   PC, PE TC, TE