8/6/2019 ImmunoSite Technologies - Case Study Praxair

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c a s e s t u d y

ParticleTesting

I m m u n o s I t e t e c h n o l o g I e s

Ladig glal sppli f sfac-hacig pcsss ad atials cts ISit Tchlgis paticl tstig svics t s th highsqality f catigs that ptct ad d i hash vits

Paxai Sfac Tchlgis, a lad i th dvlpt f sfachacig pcsss ad atials, pdcs ad applis tallic adcaic catigs that ptct citical tal cpts f a vaity

vital cditis, icldig wa, csi, ad high tpatsPaxais ivativ catigs hlp thi csts t dc aitaclower operating costs, increase product life, and improve efciency anperformance. Customers seeking these benets come from a wide rangf idstis, icldig aviati, gy (pw gati ad il/gasptchical), ad th idstial akts; icldig attiv, chicafd ad vag, glass, pap, plastics, pitig, stl, ad txtils.

Paxai Sfac Tchlgis, with 2010 sals f $568 illi ad hadqatsi Idiaaplis, Idiaa, is a ssidiay f Paxai Ic., f th lagsidstial gass cpais i th wld ad a Ft 300 cpay with2010 sals f $10.1 illi.

ProbLem: I d t dvlp high-pfig sfac-hacigcatigs, Paxai Sfac Tchlgis qis that citical cpts the surface coatings are within very specic particle size distribution (PSDspecications. They need reliable, knowledgeable particle size analyssvics t t, aitai ad dct qality assac f thi catigpdcts.

SoLuTIon: o a gla asis, Paxai sds sapls f sfac catigmaterials, such as aluminum and chrome alloy powders, to be analyzefor particle size distribution (PSD) to a team of particle testing experts aISit Tchlgis, Ic. (IST), i Ft Laddal, FL. ISTs paticltstig laaty has th xptis ad isttati t pvid th pcisparticle size analysis needed by Praxairs engineers and quality assurancpfssials.

TheParticleSizingTechnology

Th pcss gis with cafl ppaati f th sapls f aalysis aIST sig a pcis, cst ppaati pcd. As is ft th cas withlaaty tsts, th ight ppaati is citical t tai gd slts. ThIST particle testing professionals then analyze the sample on an instrumencalled the Multisizer 4 Coulter Counter, manufactured by Beckman Coulter, Inc

How Particle Testing Analysis Helps Praxair Surface Technologies MakeStronger, Longer Lasting Protective Coatings For Diverse Products

A particle testing professional at IST

analyzing a sample on the Beckman

Coulter Multisizer 4 Coulter Counter,

which measures particle size from 0.4 to

1,600 micrometers.

The Reference Method for Countingand Sizing Small Particles

Aft tha 50 yas, th CltPicipl has wll stalishdas th thd sd i sitatial ad atial stadads.Developed by Wallace H. Coulter in the1950s.

Pvids th highst slti fparticle size distribution over othertchlgis.

usd y v 98% f atatd ld

cll cts.

Over 8,000 documented scienticfcs.

meASureS paticls, t jstcalculates the sizes, as in laserdiffacti.

Coulter Principle

8/6/2019 ImmunoSite Technologies - Case Study Praxair

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I m m u n o s I t e t e c h n o l o g I e s

Fid t hw ISit Tchlgis ca t y ds.www.IsitTchlgis.cPhone: 954-462-6800

This istt ss Th Clt Picipl (als calld thelctical Ssig Z mthd), which is th accptdReference Method throughout the world for particle sizedistribution analysis. The Coulter method of sizing andctig icscpic paticls is asd asal

pptial chags i lctical sistac pdcd ycdctiv paticls sspdd i a lctlyt sl-tion as they pass through a sensing zone. As each parti-cle passes through the sensing zone, it displaces its ownvl f lctlyt. Th vl displacd is asdas a vltag pls; th hight f ach pls ig pptial t th vl f th paticl. Th Clt Piciplwas developed by Wallace H. Coulter, founder of CoulteCpati, w bcka Clt Ic.

o th istt, th qatity f sspsi dawthgh th apt is pcisly ctlld t allw thsystem to count and size particles one by one for an exacreproducible volume in the range of 0.04 to 1,600 microm-ts. Sval thsad paticls p scd a idivid-ally counted and sized with great accuracy, independent opaticl shap, cl ad dsity. Th slt is a pt the number of particles measured, the particle size distri-ti (vl), ad th sfac aa i astThe instrument uses a Digital Pulse Processor (DPP) thapvids lta-high slti ad ltipl chal aalysisf accacy that is siply t attaial y th tchlgis.

A typical report includes

graphs such as this

sample showing the

distribution of particles

based on size andvolume. This particular

sample has particles

that are between 2 and

20 micrometers in size,

with a mean of 3.054

micrometers and a

standard deviation of

1.40 micrometers.

o csts ct s t pvid a catig that

slvs wa pls ad ts thi pfac adprotection needs, says Lauren Walkup, Quality Engineerat Paxai, ad i t, f a f yas w w havlid ISTs Paticl Tstig ta t s that w ameeting critical specications of the coatings particle size.It is thgh this attti t qality assac that csts ca ly Paxais advacd sfac catigtchlgis t icas th lif ad wa f thi pdcts,ipvig thi pfac ad cst-ffctivss.

Were proud to help Praxair provide their customers with

spi catig pdcts, says Cals Apaici, Coo atISit Tchlgis. IST has th xptis, istts ad xpic t hlp cpais with paticlcharacterization of a wide range of particulate samplesad w always ady t cslt with clits at thst appach t addssig ds f pcss pdc-ti qality ctl.