Restek Performance Coatings
800-356-1688
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RestekPerformanceCoatings
As needs for improved performance of system components increase, coatings often are an effective solution. Restek’s
PerformanceCoatingsDivisionspecializes in innovativesurface treatments for steel, stainlesssteel, alloys, glass, andother
materials. Our surface treatments increase resistance to corrosion, reduce interactions between steel surfaces and active
(e.g., sulfur) compounds, inhibit cokingonprocess system surfaces, andoffermany other advantages.
Restek’s involvement incoatingsbegan in1987.The focusof our initialworkwas toproduceacoatingonstainlesssteel that
wouldbe inert to low levels of reactiveorganic compounds, suchas explosives and volatileorganic compounds (VOCs).The
end product from thisworkwas theSilcosteel
®
surface treatment for stainless steel tubing. Silcosteel
®
treated tubing cur-
rently isused for constructinganalytical testingequipment byallmajormanufacturersof gaschromatographysamplingand
testing instruments.
Since this initial project, ourcoatingsexpertshavedevelopeda familyof surface treatments toaddressotherspecificneeds,
and thereby enhance the performance of system components. Products of our processes aremore correctly described as
surface treatments, rather thanascoatings, because, unlikecoatings, the introduced layerpermeatesandchemicallybonds
to the treated surface. Andunlike coatings, this layer cannot chip, flake, or blister. Inbrief, these treatments are:
•Silcosteel
®
—Ageneral purposepassivation layer for steel and stainless steel. USPatent 6,511,760.
•Siltek
®
—Theultimatepassivationof treated surfaces, fromglass tohighnickel alloys of steel. USPatent 6,444,326.
•Silcosteel
®
-AC—Dramatically reduces carbonbuildupon stainless steel components. USPatent 6,444,326.
•Silcosteel
®
-CR—A corrosion resistant layer that increases the lifetimeof system components inacidic environments
containinghydrochloric acid, nitric acid, or seawater. USPatent 7,070,833.
•Silcosteel
®
-UHV—Greatly reduces outgassing from components of ultra-high vacuum systems. USPatent 7,070,833.
•Sulfinert
®
—A required treatment formetal componentswhenanalyzing for parts-per-billion levels of organo-sulfur
compounds. USPatent 6,444,326.
Restek surface treatmentsarenowused inmanyapplications, spanningmultiple industriesandmarket areas. Restek coat-
edcomponents increase the lifetimeof stackmonitoringequipment.Treated injectornozzleshave longerservice lifebecause
coking is inhibited. Sulfinert
®
treated sampling equipment increases the reliability of process measurements in refineries
and petrochemical plants. Amass spectrometer manufacturer demands Silcosteel
®
treated parts to increase instrument
sensitivity foranalyzingpesticides. Restekcoatedair samplingequipment isused inapplicationsasdiverseassamplingcity
air andmonitoring submarine cabins.
Silcosteel
®
-CR treatment
improves the corrosion
resistance of stainless steel
10X ormore.
Silcosteel
®
is a general purpose
passivation formetals.
Siltek
®
treatment provides the
ultimate passivation formany
surfaces, from glass to high
nickel alloys of steel.
A Sulfinert
®
layer onmetal
components is requiredwhen
analyzing for parts-per-billion
levels of organosulfur compounds.
Siltek®SurfaceDeactivation
•Eliminate activity by using themost advanced surface treatment available.
•Increase component lifetime—the non-stick surface cleans easilywith solvent sonication.
•Ideal for acidic conditions. Siltek
®
treatment will improve reproducibility and protect hardware.
•Stable to 600°C. A no-bleed deactivation treatment, ideal for all analytical methods.
•Custom service available.
Endrin is more prone to break down on glass surfaces than metal, and DDT is more prone to break down on metal
surfaces. Siltek
®
deactivation of sample-contacting surfacesminimizes endrin andDDT breakdown, to less than 1%!
In addition to ourmany stock Siltek
®
-treated products, custom coating service is available. Contact ourTechnical Service
Team at 800-356-1688 or 814-353-1300, ext. 4, or contact your Restek representative.
Column:
30m, 0.53mm ID, 0.42µm
Rtx
®
-CLPesticides2 (cat.#11340)
withOpen-TopUniliner
®
(cat.# 20843-214.1)
Inj.:
1µL of 50pg/µL standards
Oven temp.: 120°C (hold 1min.) to
300°C@ 9°C/min. (hold 10min.)
Inj. temp.: 250°C
Det.:
ECD, 300°C
Carrier gas: helium
10
20
30
0
1
3
5
2
4
10
20
30
0
1
2
3
4
5
6
7
1. 2,4,5,6-tetrachloro-
m
-xylene (IS)
2. endrin
3. 4,4'-DDT
4. endrin aldehyde
5. methoxychlor
6. endrin ketone
7. decachlorobiphenyl (IS)
1. 2,4,5,6-tetrachloro-
m
-xylene (IS)
2. endrin
3. 4,4'-DDT
4. methoxychlor
5. decachlorobiphenyl (IS)
ASiltek®-deactivatedUniliner® inlet liner reducesendrinbreakdown to less than1%;
DDTandmethoxychlorbreakdownareundetectable.
non-deactivated inlet liner
Siltek®-deactivated inlet liner
Industries currently
benefiting from the reliability
of Restek’s performance
coatings include:
• petroleum, petrochemical,
and refineries
• analytical instrument
manufacturers
• analytical labs
