i

10

r

This Auto Rlushw animal housing system

automaticalt y flushes awayanil wasteand sixteen other thingsM...

(1) The unpleasantness and boredom of frequent excretapan cleaning.

(2) The time required for (1) above.(3) The cost incurred for (1) above.(4) The need for weekend and holiday caretaker

maintenance.(5) The cost of bedding materials.(6) The need to store bedding materials.(7) The cost of distributing bedding materials.(8) Airborne litter dust.(9) Microbial transmission on airborne litter dust.

(10) Room odors.(1 1) Excrement fermentation.(12) Complex electromechanical components.(13) The need for expensive wiring associated with (12)

above.(14) Cage locking problems.(15) "Freezing" leveling casters that cease to function.(16) Rusting problems.Note: This system is also available with automatic watering.

For more information about Auto-Flushmand/or the completeLab Products catalog, please call, write, or use the coupon.Lab Products, Inc., 365 W. Passaic Street, Rochelle Park, NewJersey 07662.201/843-4600.

lab products

inca company365 Vest Passaic Street Rochelle Park, N.J. 07662

Lab Products... .not just plastic cages, metal cages, cus-tom fabrication, laminar flow systems, bedding, automaticwatering systems, accessories...

Circle No. 85 on Readers' Service Card

Lab Products, Inc.365 W. Passaic StreetRochelle Park, New Jersey 07662O I'm interested in more information about your Auto-Flush'w

system.O I'd appreciate a copy of your complete catalog.NameTitle

Dept.

OrganizationAddress

Phonearea number ext.

Copyright 0 1978 BioMedic Corporation

PlU MINC in, turn it on, and you-canplot charts, solve-coplxe andstatistical ontro and

acquire ready-to-run BASIC'software-true computer fumc-tionality. It's as easy as that.'MINCslbuilt-around Digtal's proven PDPtI *nicomput-Ner.MNChas its owngra terial, onemillion character dul floppies ndthree

sea line einterfaces.

Hooking up a lab instrument is as sple asplugging in a single connector to the EEEBus inteface orone oftheseven optionalinput/output modules. When you finishyour eperiment, you unplug te connectorand wheel the MINC cart to the next job.

And iffyou need more on-line dAtastorage, therTe's the new DECLAB-11/MNC thatcombines hn and ease-of-useof MINC with 10 million character, randomacess disk drives, powerful ORTRANsoVt ndDigita's versatile RT-11 operat--ing ystm.

If you'd likethe whole story on theseeasy-touMsse write Laborato- DataP-rodusGru,DitlEqimn

atin, Mar ut. 699 EuLd12 av. d M s,

Equpent ofCanada, Lt.

* Each lot testedfor binding and dis-place mentin aspecificradioimmunoassay

* n-Propanol solvent provides clear,easy-to-read chromatographs

* Guaranteed <3% free iodide; <1% labeled organic impurities* Radiochromatogram included

T3 Triiodothyronine, L-3,5 ,3'-[1251] -NEX-110 100-150,uCi/,gNEX-110H 750-125OpiCi/4grT3 Triodothyronine, L-3,3'95'-[1251]-(reverse T3)NEX-109 750-125OCi/4gT4 Thyroxine, L-[1251]-NEX-111 100-150uCi/gNEX-111H 750-1250O Ci/ig

Higher specific activities available.Request our 1251 products brochure.Not for use in humans or clinical diagnosis.

¢>1New England Nuclear®) 549 Albany Street, Boston, Mass. 02118

Call toll-free: 800-225-1572(In Massachusetts and International: 617-482-9595)

NEN Chemicals GmbH, Dreieich, W. Germany; NEN Canada Ltd., Lachine, Ouebec

Circle No. 54 on Readers' Service Card

The fraction collector

with built-out obsolescence

This is the fraction collectorthat will do practically any jobyou may have today, or tomor-row, or five years from now. Itholds 380 little tubes; 135 big,big (70 ml) tubes; or even 28 mmscintillation vials. The RetrieverIll gives you versatile pushbuttonprogramming with time, drop orvolumetric mode selection. Allelectronics are protected fromspills, coldroom condensation,and memory loss during powerfailure.Options include a delay timer

to compensate for effluent vol-ume between the detector andfraction collector, and a driplessflow interrupter valve that actu-ally retracts hanging drops toprevent their falling betweentubes. If you should have a spill,

you can lift off and submerge theentire mechanism tray for clean-ing.Send for your ISCO catalog to

learn about the fraction collectorthat can handle any job you'llprobably ever have. Or dialdirect, toll free: (800) 228-4250(continental U.S.A. except Neb-raska). Instrumentation Special-ties Company, P.O. Box 5347,Lincoln, Nebraska 68505.

Instruments with a difference

Circle No. 91 on Readers' Service Card

21113 APRIL 1979

SOLUTIONCALORIMETER

For:HeatsHeatsHeats

of Reactionof Solution Heats of Dilutionof Mixing Heats of Wetting

Enthalpy changes in solution ranging from 2 to1000 calories can be measured in this new, mod-erately priced calorimeter with a precision of 1%or better. All operations are straightforward andsimple with results plotted on a strip chart foreasy analysis. For details, write or phone: ParrInstrument Company, Moline, Illinois 61265. Tele-phone: 309/762-7716

Circle No. 40 on Readers' Service Card

IIELLM W, ,or litraturCE L LS, I NC =.aNewYorkl424'

Cirl No. 5 on Reders Svic Card

11~~~Wwil surelyyieild moe-sestive, maore l/ mau mttayoucangtgwth i h cmpontsyo-uY melf

// ~~And withoutio we can gamnte thet twill save you

Tb achieve the s vity we developed an antiserum whichm possle thedetnaon of -endorpbinlevels Inthefemtoerge. To assure r d twe

screen each new component bath ft oompaAlblltywlth th eexistingand before shipmentwern a complete assay with each lot ofkits.

The resuting curve Is inctludedwi your kitAltogether the kit is a complete de d to save you the time and trouble

it takes to develop a goodant pify the tcer, match the copnents, Iand maintain e e One itcains reagents forprfom 250 assays.Find out more. Send for our brochure describingthe ki and assayvprocedure.

\ @jEnsl~~~~~XandNiedar X/549 ayStreet, BostoR Mass. 02118,Tol4ree: 800-225-1572 |(In Massachusetts and International: 617-482-9595)

NONIChankIsbH:D-6072DreikctW.Gemry,Poach401240,Teephone (OMCO)85$, TOex4-17993NEN D,NBCISd.LW.,24534hAvenre.Lachine.QueH8T3C9,Telephone514436-4971,Teex5-8218O8

13 APRIL 1979213~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~21313 AMPRL 1979 Circle No. 53 on ReadersService Card